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{{incomplete|needs=Update on ORAS and SM, info for SV}}
A '''rematch''' or '''re-battle''' (Japanese: '''{{tt|再戦|さいせん}}''' ''rematch'') is a second or subsequent {{pkmn|battle}} against a {{pkmn|Trainer}} or {{OBP|Pokémon|species}}.

In the core series games, it is mandatory for the {{player}} to defeat certain Trainers to advance within the game. Technically, if the player is defeated, they are given the chance to battle this opponent again until defeated (barring exceptional circumstances), but this isn't considered a rematch.

Most of the time, however, if a Trainer is defeated, that Trainer will not be available for a rematch until certain conditions have been met. When Trainers usually agree to rematch, their Pokémon will have become stronger (level up or evolution), or they would already have acquired more Pokémon (sometimes from another region, once the player has obtained the [[National Pokédex]]).

==Types of rematch==
===Regular Trainers===
From [[Generation II]] onward, with the exception of {{game|Black and White|s}} and {{pkmn|X and Y}}, some regular Trainers found along normal routes and caves can be challenged for a rematch.

In {{game2|Gold|Silver|Crystal}}, the player can exchange [[Pokégear]] phone numbers with specific Trainers, allowing them to contact the player for a rematch. Note that Trainers have to be rebattled as soon as possible, otherwise the chance to do so will disappear.

In {{game|HeartGold and SoulSilver|s}}, trainer rematches through the [[Pokégear]] cannot be initiated until the following requirements are met:
*The player has collected seven [[Badge]]s
*[[Team Rocket]] has been defeated at the [[Goldenrod Radio Tower|Radio Tower]] in [[Goldenrod City]]
*The player is not currently in the same route or location as the trainer
*The player calls the trainer during [[Pokégear#Trainer_phone_listing|the day of the week and time of day]] the trainer is open to rematch (trainers may call the player at random to rematch regardless of their rematch window)

Unlike Gold, Silver, and Crystal, trainers can be rebattled multiple times per day within their rematch window.

In Pokémon Gold, Silver, and Crystal, the number of difficulty levels and triggers are defined individually for each Trainer. Certain rematches are available only in Gold and Silver, while others are only in Crystal. The potential of a trainer calling for a rematch resets daily, but the following events are additional triggers for new rematches:

*Reaching a new city/town in Johto, starting with [[Goldenrod City]]
*Reaching the [[Lake of Rage]]
*Defeating [[Team Rocket]] at [[Mahogany Town]] or Goldenrod City
*Becoming {{pkmn|Champion}}
*Returning the [[Machine Part]] to the [[Kanto Power Plant]]

Additionally, in Gold and Silver, the player will battle the strongest team available, but in Crystal, each team has to be battled in order (including fighting the initial team again).

In Pokémon HeartGold and SoulSilver, the Trainers' teams change three different times throughout the games' progression:
*Firstly after the player has obtained seven [[Badge]]s and [[Team Rocket]] has been defeated at the [[Goldenrod Radio Tower|Radio Tower]] in [[Goldenrod City]]
*Secondly after the player has entered the [[Hall of Fame]] for the first time
*Thirdly after the player has obtained all 16 [[Badge]]s

In {{game2|Ruby|Sapphire|Emerald}}, the [[PokéNav]]'s {{DL|PokéNav|Trainer's Eyes}} or {{DL|PokéNav|Match Call}} has similar functions to the Pokégear, keeping track of Trainers who eventually want to re-battle the player. Regular Trainers are eligible for rematches after obtaining the {{badge|Balance}}; once it is obtained, if the player is on a map with eligible Trainers, each Trainer on the map has a separate 31% chance to demand a rematch every 255 steps.<ref>https://github.com/pret/pokeemerald/blob/master/src/battle_setup.c#l1605</ref> 

In [[Pokémon Omega Ruby and Alpha Sapphire]], the Trainer's Eye function returns, and Trainers are ready for a rematch more frequently than in [[Generation III]]; in these games, the Trainers' teams improve as the player progresses through the game, and are at their strongest after the player has entered the Hall of Fame.

[[File:Vs Seeker demonstration FRLG.png|thumb|{{ga|Red}} uses the Vs. Seeker on {{rt|25|Kanto}}. Three Trainers wish to have a rematch.]]

In {{game|FireRed and LeafGreen|s}}, {{game2|Diamond|Pearl|Platinum}}, and {{g|Brilliant Diamond and Shining Pearl}}, while outdoors, the player can use the [[Vs. Seeker]] to randomly make nearby Trainers ready for a rematch. Certain Trainers have stronger teams, depending on how far the player is through the game, as long as they have defeated that Trainer's previous party. New Vs. Seeker parties are unlocked at the following events:
* Obtaining the Vs. Seeker
* Arriving in [[Celadon City]]{{sup/3|FRLG}}/defeating [[Fantina]]{{sup/4|DP}}/arriving in [[Celestic Town]]{{sup/4|Pt}}
* Arriving in [[Fuchsia City]]{{sup/3|FRLG}}/capturing or defeating the cover Legendary Pokémon{{sup/4|DPPt}}
* Entering the Hall of Fame
* Delivering the {{i|Sapphire}} to [[Celio]]{{sup/3|FRLG}}/capturing or defeating {{p|Heatran}} at [[Stark Mountain]]{{sup/4|DPPt}}. <!-- in FRLG (need to check DPPt), the player needs to go through each team in succession -->

In Pokémon Diamond, Pearl, and Platinum, certain Trainers can be challenged daily at the [[Seven Stars Restaurant]]. In Pokémon Diamond and Pearl, the player can battle one Trainer per day at [[Jubilife TV]], with the Trainer that appears varying with the [[days of the week|day of the week]]. In Pokémon Platinum, players can challenge several Trainers that appear in different [[Pokémon Center]]s once per day each, as well as repeatedly battle the {{tc|Maid}}s in the 5-Maid Knockout Exact-Turn Attack Challenge in the {{si|Pokémon Mansion}}.

In {{game|Black and White|s}} and {{game|Black and White|s|Pokémon Black 2 and White 2|2}}, Trainers in the [[Big Stadium and Small Court]] of [[Nimbasa City]] and the [[Royal Unova]] can be rematched daily. In Pokémon Black 2 and White 2, as the player progresses through the game, the Trainers' Pokémon are battled at higher levels, and will be at their strongest after the player has entered the Hall of Fame. Some Trainers may replace their Pokémon. {{tc|Pokémon Breeder}}s in Black 2 and White 2 will re-challenge the player upon sight (as long as the player has left the area since their last battle), even if the player had previously defeated them; however, their teams remain the same during each battle.

In [[Pokémon X and Y]], Trainers in the [[Battle Chateau]] can be battled each time that Trainer has entered the Battle Chateau. Only those whose rank is the same as or lower than the player's will appear. The player can purchase {{DL|Battle Chateau|writs}} to have an effect on three different factors (party levels, [[prize money]], and Trainer arrival rate) for the remainder of that day, although issued writs can be swapped out if the new one has the same type of effect.

In [[Pokémon Sun and Moon|Pokémon Sun, Moon]], [[Pokémon Ultra Sun and Ultra Moon|Ultra Sun, and Ultra Moon]], certain Trainers can be challenged daily at the [[Battle Buffet]] at [[Hau'oli City]]'s Shopping District.

In [[Pokémon Sword and Shield]], Pokémon Breeder Chloe can be rematched whenever she is found in the [[Wild Area]], with teams differing based on if the player received the Fire Badge and if they enter the Hall of Fame. The {{tc|Café Master}}s in the [[Battle Café]]s throughout [[Galar]] can also be challenged daily.

In [[Pokémon Colosseum]] and {{Pokémon XD}}, there are certain areas that allow for multiple rematches, most notably in [[Pyrite Town]]'s Duel Square. Other locations such as [[Agate Village]] and [[The Under Subway]] allow for rematches only after getting past a certain point in the game.

===Rival===
Since Generation I, the player's [[rival]]s play key roles within the game, occasionally giving hints, helping out or even challenging the player to a rematch. In every game, at least one of the player's rivals can be repeatedly rematched after entering the [[Hall of Fame]] of that region.

The following table shows where and when the player's rivals can be challenged for subsequent rematches:
{| class="roundy" style="background:#{{locationcolor/med|underwater}}; border:3px solid #{{locationcolor/dark|underwater}}; margin:auto"
! style="background:#{{locationcolor/light|underwater}}; {{roundytl|5px}}" | Region
! style="background:#{{locationcolor/light|underwater}}" | Rival
! style="background:#{{locationcolor/light|underwater}}; {{roundytr|5px}}" colspan=2 | Time and location for (the most recent) rematch
|- style="background:#{{kanto color light}}"
| rowspan=2 | [[Kanto]]
| {{ga|Blue}}{{sup/1}}{{sup/3|FRLG}}
| rowspan=2 | Any time
| rowspan=2 |  [[Indigo Plateau]] ({{pkmn|Champion}} rematch)
|- style="background:#{{kanto color light}}"
| {{ga|Trace}}{{sup/7|PE}}
|- style="background:#{{johto color light}}"
| [[Johto]]
| {{ga|Silver}}
| Mondays and Wednesdays
| [[Indigo Plateau]]
|- style="background:#{{hoenn color light}}"
| rowspan=2 | [[Hoenn]]
| rowspan=2 | [[Wally]]
| Any time (random chance){{sup/3|RSE}}
| {{ho|Victory Road}}{{sup/3|RSE}}
|- style="background:#{{hoenn color light}}"
| Once per day{{sup/6|ORAS}}
| [[Battle Maison]]{{sup/6|ORAS}}
|- style="background:#{{sinnoh color light}}"
| rowspan=2 | [[Sinnoh]]
| rowspan=2 | {{ga|Barry}}
| rowspan=2 | Saturdays and Sundays
| [[Fight Area]]{{sup/4|DP}}{{sup/8|BDSP}}
|- style="background:#{{sinnoh color light}}"
| [[Survival Area]]{{sup/4|Pt}}
|- style="background:#{{unova color light}}"
| rowspan=3 | [[Unova]]
| [[Cheren]]{{sup/5|BW}}
| Once per day
| {{OBP|Victory Road|Black and White}}
|- style="background:#{{unova color light}}"
| [[Bianca]]{{sup/5|BW}}
| Saturdays and Sundays
| [[Nuvema Town]]
|- style="background:#{{unova color light}}"
| [[Hugh]]{{sup/5|B2W2}}
| Once per day
| [[Driftveil City]]
|- style="background:#{{kalos color light}}"
| [[Kalos]]
| {{ga|Calem}}{{tt|*|If the player character is female}} or {{ga|Serena}}{{tt|*|If the player character is male}}
| Once per day
| [[Kiloude City]]
|- style="background:#{{alola color light}}"
| rowspan=2 | [[Alola]]
| [[Hau]]
| Any time (random chance)
| {{al|Pokémon League}} ([[Pokémon League (Alola)/Title Defense|Title Defense]])
|- style="background:#{{alola color light}}"
| [[Gladion]]
| Any time (random chance)
| {{al|Pokémon League}} ([[Pokémon League (Alola)/Title Defense|Title Defense]])
|-style="background:#{{galar color light}}" 
| rowspan=4 | [[Galar]] <small>(Mainland)</small>
| [[Hop]]
| Any time (random chance)
| [[Wyndon Stadium]] ([[Wyndon Stadium/Champion tournaments|Champion tournaments]]/[[Galarian Star Tournament]])
|- style="background:#{{galar color light}}"
| [[Bede]]
| Any time (random chance)
| [[Wyndon Stadium]] ([[Wyndon Stadium/Champion tournaments|Champion tournaments]]/[[Galarian Star Tournament]])
|- style="background:#{{galar color light}}" 
| rowspan=2 | [[Marnie]]
| Once per day
| [[Spikemuth]]
|- style="background:#{{galar color light}}" 
| Any time (random chance)
| [[Wyndon Stadium]] ([[Wyndon Stadium/Champion tournaments|Champion tournaments]]/[[Galarian Star Tournament]])
|- style="background:#{{Isle of Armor color light}};
| rowspan=4 | [[Galar]] <small>([[Isle of Armor]])</small>
| rowspan=2 | [[Klara]]{{sup/8|Sw}}
| Once per day
| [[Master Dojo|Battle Court]]
|- style="background:#{{Isle of Armor color light}};
| Any time (random chance)
| [[Wyndon Stadium]] ([[Galarian Star Tournament]])
|- style="background:#{{Isle of Armor color light}}" 
| rowspan=2 | [[Avery]]{{sup/8|Sh}}
| Once per day
| [[Master Dojo|Battle Court]]
|- style="background:#{{Isle of Armor color light}}" 
| Any time (random chance)
| [[Wyndon Stadium]] ([[Galarian Star Tournament]])
|- style="background:#{{paldea color light}}"
| rowspan=2 | [[Paldea]]
| rowspan=2 | [[Nemona]]
| Any time (random chance)
| [[Mesagoza]] ([[Academy Ace Tournament]]) 
|- style="background:#{{paldea color light}}"
| Any time
| [[Blueberry Academy]]
|- style="background:#{{kitakami color light}}"
| rowspan=2 | [[Kitakami]]
| [[Carmine]]
| Once per day (Random chance)
| [[Blueberry Academy]]
|- style="background:#{{kitakami color light}}"
| [[Kieran]]
| Once per day (Random chance)
| [[Blueberry Academy]]
|}

===Gym Leaders===
[[Gym Leader]] rematches were first introduced in {{game|Emerald}}. They are featured in all subsequent core series games with Gym Leaders, except for Pokémon Diamond & Pearl, Black & White, and Omega Ruby & Alpha Sapphire.

====Pokémon Emerald====
After the player has entered the [[Hall of Fame]] for the first time, the player can rematch Gym Leaders. There is a 31% chance for a [[Gym Leader]] rematch to become available after every 60th wild encounter, every 20th Trainer battle, and every 20th {{ho|Battle Frontier}} battle.

Each Gym Leader has four teams, ordered from lowest [[level]]s to highest levels, and they will use each team after the player defeats their previous team. All teams contain Pokémon outside the [[List of Pokémon by Hoenn Pokédex number (Generation III)|Hoenn Pokédex]]. The player will not be able to move on to any Gym Leader's second rematch until they have defeated all Gym Leaders' first rematch, the same holds true for the third and fourth rematches.

[[Wattson]] is not available for a rematch until the player has completed the [[New Mauville]] sidequest. Since all Gym Leaders need to be defeated in a rematch to unlock the next set of rematch teams, completing this sidequest is also a prerequisite for unlocking the second set of rematch teams.<ref>https://github.com/pret/pokeemerald/blob/master/src/gym_leader_rematch.c#l32</ref>

====Pokémon Platinum====
[[File:Battleground Pt.png|230px|thumb|Battleground (from left): Maylene, Volkner, the player, the Café owner]]
{{main|Battleground}}
In {{game|Platinum}}, the Gym Leaders of [[Sinnoh]], together with the player's previous [[Stat Trainers|Multi Battle partners]], can be found in the [[Battleground]]. Up to four of these {{pkmn|Trainer}}s appear each day and they can be battled only once a day. The residing Trainers are generated upon entering the Battleground, potentially allowing for different Trainers after game resets.

====Pokémon HeartGold and SoulSilver====
[[File:Fighting Dojo HGSS.png|230px|thumb|left|The Fighting Dojo with all the Gym Leaders]]
{{main|Fighting Dojo/Generation IV}}
In {{game|HeartGold and SoulSilver|s}}, the [[Gym Leader]]s of [[Kanto]] and [[Johto]] are found in the [[Fighting Dojo]]. However, unlike Platinum, the Leaders will not arrive at the Dojo until they have been called on for a rematch.

To re-battle a Gym Leader, the player has to first obtain the Gym Leader's number. Following that, the player can call the Gym Leader at any time, but the Gym Leader will only accept a rematch when their schedule is free. When a Gym Leader has accepted a rematch, they will stay in the Fighting Dojo until they are defeated. There is no limit to the number of times a Gym Leader can be rematched.

====Pokémon Black 2 and White 2====
{{main|Pokémon World Tournament}}
In {{2v2|Black|White|2}}, Gym Leaders can be rematched in the [[Unova Leaders Tournament]] at the [[Pokémon World Tournament]].

====Pokémon X and Y====
{{main|Battle Chateau}}
In {{pkmn|X and Y}}, the [[Gym Leader]]s of [[Kalos]] can be rematched at the [[Battle Chateau]] once the {{player}} has reached the rank of {{tc|Marquis}} or {{tc|Marchioness}}. The Gym Leaders use two of their Pokémon, who start at [[level]] 40. After the player has entered the [[Hall of Fame]], the base level of their team is changed to level 50, and the Pokémon for some of the Gym Leaders have been replaced.

Unlike in previous games, the [[Elite Four]] and {{pkmn|Champion}} of Kalos do not receive higher level teams when rematched at the {{kal|Pokémon League}}. Instead, they can also be encountered at the Chateau. The Elite Four can be rematched when the player reaches the rank of {{tc|Duke}} or {{tc|Duchess}}. They use three Pokémon at the base level of 55. Finally, Champion [[Diantha]] can be rematched when the player reaches the highest rank, Grand Duke or {{tc|Grand Duchess}}, respectively. She uses four Pokémon, including her {{me|Gardevoir}}, at the base level of 60.

Like other Trainers at the Battle Chateau, issuing certain {{DL|Battle Chateau|writs}} can be used to adjust the levels of the teams used there by Gym Leaders, the Elite Four, and Diantha, as well as giving them the chance to appear more frequently.

====Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!====
In [[Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!]], after the player has entered the [[Hall of Fame]], each Gym Leader of [[Kanto]] can be rematched at their respective Gym once per day. At the [[Viridian Gym]], {{ga|Blue}} is battled instead of [[Giovanni]]. In addition, the Pokémon League can also be challenged again, with all Elite Four members possessing a Kanto Pokémon's [[Alolan form]].

====Pokémon Brilliant Diamond and Shining Pearl====
In [[Pokémon Brilliant Diamond and Shining Pearl]], each [[Gym Leader]] of [[Sinnoh]] can be challenged to a rematch at their respective [[Gym]] once per day after the [[National Pokédex]] has been obtained<!-- and the [[Hall of Fame]] has been entered-->.

====Pokémon Scarlet and Violet====
In {{pkmn|Scarlet and Violet}}, the Gym Leaders of [[Paldea]] are rematched once each as part of the post-game. Nemona suggests hosting a battle tournament at [[Naranja Academy|Naranja]]{{sup/9|S}}/[[Uva Academy]]{{sup/9|V}} to celebrate the player's new Champion status, requesting for [[Geeta]] to take part in it as well as she is the chairwoman of the academy's school board. While Geeta says she's busy with her duties as the Pokémon League chairwoman, she agrees to take part if the player takes her place at inspecting all the Gym Leaders to see if they're still worthy of keeping their positions. Unlike previous games, these rematches are not repeatable. 

In [[The Indigo Disk]], Gym Leaders can be invited to [[Blueberry Academy]]'s [[League Club Room]] as special coaches for 200 [[Blueberry Point|BP]], where they can be rematched any number of times. In addition, the first time they are defeated, they will reward the player with an item, and after their third unique interaction, they will trade a specific Pokémon to the player.

===Pokémon League===
The [[Pokémon League]] can be rematched in all [[core series]] games featuring one except {{g|Sword and Shield}} and {{g|Scarlet and Violet}}. Starting in {{game|FireRed and LeafGreen|s}}, most rematches against the [[Elite Four]] and {{pkmn|Champion}} feature teams at higher [[level]]s, sometimes with different Pokémon, moves, stats, or held items.

In [[Generation I]], they are the only Trainers that can be rematched.

====Generation III====
=====Ruby, Sapphire, and Emerald=====
The {{ho|Pokémon League}} can be rematched, however the teams used are identical to prior completions.

=====FireRed and LeafGreen=====
The [[Indigo Plateau]] will start using higher-level Pokémon once the player has completed the [[Sevii Islands]] post-game quest.

====Generation VI====
=====Diamond and Pearl=====
The {{si|Pokémon League}} can be rematched, however the teams used are identical to prior completions.

=====Platinum=====
The {{si|Pokémon League}} uses higher-level Pokémon after the player completes the [[Stark Mountain]] sidequest.

=====HeartGold and SoulSilver=====
The [[Indigo Plateau]] will start using higher-level Pokémon once the player has earned all 16 [[Badge]]s.

====Generation V====
=====Black, White, Black 2, and White 2=====
The {{un|Pokémon League}} uses higher-level Pokémon after the player defeats them the first time.

====Generation VI====
=====X and Y=====
The {{kal|Pokémon League}} can be rematched, however the teams used are identical to prior completions.

=====Omega Ruby and Alpha Sapphire=====
The {{ho|Pokémon League}} will start using higher-level Pokémon once the player has completed the [[Delta Episode]].

====Generation VII====
=====Sun, Moon, Ultra Sun, and Ultra Moon=====
The {{al|Pokémon League}} uses higher-level Pokémon after the player defeats them the first time.

=====Let's Go, Pikachu! and Let's Go, Eevee!=====
The [[Indigo Plateau]] will start using higher-level Pokémon, different species, as well as [[Alolan form]]s and [[Mega Evolution|Mega Evolved]] versions of certain species, after the player has become Champion.

====Generation VIII====
=====Pokémon Brilliant Diamond and Shining Pearl=====
The Pokémon League has two sets of rematches.

The first set of rematch teams are used after the player has defeated the Pokémon League once and obtained the [[National Pokédex]]. These teams are based on the post-[[Stark Mountain]] teams the Elite Four and the Champion use in {{game|Platinum}}.

The second set of rematch teams are used after the player catches {{p|Heatran}} at [[Stark Mountain]] and has defeated the first set of rematch teams at least once.

====Generation IX====
=====Pokémon Scarlet and Violet=====
While the player is normally unable to rematch the Elite Four, both [[Hassel]] and [[Geeta]] will compete in the [[Academy Ace Tournament]] as random opponents.

Furthermore, in [[The Indigo Disk]], much like the Gym Leaders, the Paldea Elite Four and Geeta can be invited to [[Blueberry Academy]]'s [[League Club Room]] as special coaches for 200 BP and can be rematched any number of times. [[Larry]] does not require any prerequisites to be invited; for [[Rika]] and [[Poppy]] to be invited into the League Club Room, the player must have traded with five special coaches; Hassel requires trades with three special coaches, along with completing his [[bond]]ing event; Geeta requires trades with eight special coaches. Like the Gym Leaders, they will give a specific item upon their first defeat, and trade a specific Pokémon upon their third unique interaction.

The {{DL|Blueberry Academy|BB League}} Elite Four can also be rematched by talking to them in League Club Room. They do not require an invite, but only three can be present at a time and they can only be battled once per day.

===Title Defense===
[[File:Title Defense USUM.png|thumb|250px|The player defending their title in {{g|Ultra Sun and Ultra Moon}}]]
====Pokémon Sun, Moon Ultra Sun, and Ultra Moon====
{{main|Pokémon League (Alola)/Title Defense}}
In [[Pokémon Sun and Moon|Pokémon Sun, Moon]], [[Pokémon Ultra Sun and Ultra Moon|Ultra Sun, and Ultra Moon]], the player, as the first Champion of [[Alola]], has the opportunity to defend their title after completing their rematches against the Elite Four. In addition to their rivals, [[Hau]] and [[Gladion]], challengers include [[Trial Captain]] [[Sophocles]], [[island kahuna]] [[Hapu]], former [[Team Skull]] Admin [[Plumeria]], and the League's founder, [[Professor Kukui]].

====Pokémon Sword and Shield====
In [[Pokémon Sword and Shield]], after the player becomes Champion, they can defend their title in subsequent [[Wyndon Stadium/Champion tournaments|Champion tournaments]] in [[Wyndon Stadium]]. Players can invite a sitting Gym Leader, their rival [[Hop]], former Leader [[Piers]], or former Champion [[Leon]] to join the tournament before it starts. However, doing so does not guarantee that the invited Trainer will be battled by the player, as they can be defeated in rounds prior to reaching the player. All Gym Leaders featured in the player's game of choice can be challenged through this tournament, except for [[Opal]], who retires her title to one of the player's rivals, [[Bede]].

After the player has completed [[The Crown Tundra]] story, the [[Galarian Star Tournament]] is opened. It allows the player to rematch all the present and former Gym Leaders, Hop, Leon, [[Peony]], [[Sordward]], and [[Shielbert]] in [[Multi Battle]] tournaments.

===Other special Trainers===
===={{ga|Red}}====
Once the player had defeated {{ga|Red}} in {{game5|Gold|Silver|Crystal|HeartGold|SoulSilver}}, he will reappear at [[Mt. Silver Cave]] every time the player enters the [[Hall of Fame]].

===={{ga|Green}}====
Once the player had defeated {{ga|Green}} in [[Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!]], she will reappear in [[Cerulean City]]. The player can battle her once a day.

===={{tc|GAME FREAK}}====
Introduced in {{game|Black and White|s}}, [[Shigeki Morimoto|Morimoto]] of [[GAME FREAK]] can be battled once a day GAME FREAK's in-game [[region]]al headquarters in {{game4|Black|White|Black|White}}, {{pkmn|Sun and Moon|Sun, Moon}}, {{pkmn|Ultra Sun and Ultra Moon|Ultra Sun, Ultra Moon}}, {{pkmn|Sword and Shield|Sword, Shield}}, {{pkmn|Brilliant Diamond and Shining Pearl|Brilliant Diamond and Shining Pearl}}, usually after entering the region's respective [[Hall of Fame]]. In Black 2 and White 2, the player can also battle [[Kōji Nishino|Nishino]], and in Ultra Sun and Ultra Moon, the player battles Morimoto and [[Kazumasa Iwao|Iwao]] in a [[Double Battle]].

The player can also battle Morimoto in [[Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!]], but he is not rematchable in these games.

====[[Mustard]] and {{gal|Honey}}====
In [[The Isle of Armor]], after the player has defeated [[Mustard]] in the [[Master Dojo|Battle Court]], they can rematch him once a day upon request. {{gal|Honey}} can also be battled daily after spending enough [[Watt]]s to upgrade the Master Dojo.

====[[Peony]]====
In [[The Crown Tundra]], after the "They Came From The Ultra Beyond!" adventure is started, the player can battle [[Peony]] in the [[Max Lair]] once a day.

====Academy staff====
In [[The Indigo Disk]], staff members from [[Naranja Academy]]{{sup/9|S}}/[[Uva Academy]]{{sup/9|V}} can be invited to [[Blueberry Academy]]'s [[League Club Room]] after trading with three special coaches, along with completing their respective [[bond]]ing events, after which each of them can be rematched daily.

====[[Arven]] and [[Penny]]====
In [[The Hidden Treasure of Area Zero]], the player can invite [[Arven]] and [[Penny]] to Blueberry Academy's League Club Room and rematched any number of times after completing the [[Mochi Mayhem]] epilogue.

===Wild Pokémon from in-game events===
{{main|List of wild Pokémon from in-game events}}
{{incomplete|section|needs=Are effort values awarded in mandatory captures? Do rematches also apply for wild Mythical Pokémon? Stakataka/Blacephalon in USUM: do they reappear if defeated?}}
In all games, being defeated by a Legendary Pokémon does not cause it to disappear. In all games in which [[roaming Pokémon]] exist, [[Escape|fleeing]] from them does not cause them to permanently disappear; the game simply behaves the same as if they were the ones to flee.

Prior to Pokémon FireRed and LeafGreen, fleeing from stationary [[Legendary Pokémon]] causes the Pokémon to permanently disappear.

In Pokémon FireRed, LeafGreen, and Emerald, if the player flees from a stationary Legendary Pokémon, it will reappear upon leaving and re-entering the room. The game informs the player that "The <sc><Pokémon></sc> flew away!". If the player defeats an event exclusive Legendary/Mythical Pokémon, it reappears after the player next enters the [[Hall of Fame]].

In Pokémon Platinum, if the player defeats or flees from a stationary Legendary Pokémon, it reappears after the player next enters the [[Hall of Fame]]. If the player defeats a [[roaming Pokémon]], it will reappear only after the player has re-triggered the event which caused it to start roaming; for example, the player must talk to [[Professor Oak]] to cause a [[Legendary birds|Legendary bird]] to resume roaming. If the player flees from or defeats [[List of Pokémon with form differences#Giratina|Origin Forme]] {{p|Giratina}} in the [[Distortion World]], it will reappear in [[Turnback Cave]] in its Altered Forme, where it behaves in the same way as all other stationary Legendary Pokémon.

This was extended to all stationary Pokémon ([[red Gyarados]], {{p|Sudowoodo}}, and {{p|Snorlax}}) in HeartGold and SoulSilver. If {{p|Suicune}} is defeated or fled from, [[Eusine]] will comment on this fact, and it will instead reappear at the [[Burned Tower]], where it behaves in the same way as all other stationary Legendary Pokémon. If {{p|Ho-Oh}}{{sup/4|HG}} or {{p|Lugia}}{{sup/4|SS}} is defeated or fled from during the storyline, the [[Kimono Girl]]s will comment on this fact before leaving; however, the Pokémon still behave like any other stationary Pokémon.

In Pokémon Black and White, {{p|Reshiram}}{{sup/5|B}} or {{p|Zekrom}}{{sup/5|W}} must be caught; defeating, fleeing from or losing to the Pokémon does not cause it to disappear, the battle yields no [[experience]], and the story cannot be progressed until it is caught. However, if the player has a full [[party]] and [[PC]], it is possible to progress without catching it, in which case it instead appears at [[Dragonspiral Tower]] after defeating [[Ghetsis]], where it behaves in the same way as all other stationary Legendary Pokémon, except that it will still not give any [[experience|experience points]].

In Pokémon X and Y, {{p|Xerneas}}{{sup/6|X}} or {{p|Yveltal}}{{sup/6|Y}} must be caught; defeating, fleeing from or losing to it does not cause it to disappear, the battle yields no [[experience]], and the story cannot be progressed until it is caught. The 31st box in the [[Pokémon Storage System]] does not become available until after the player catches it, so it is not possible to avoid the capture even if the player's party and PC are both full.

In Pokémon Omega Ruby and Alpha Sapphire, if the player defeats {{p|Groudon}}{{sup/6|OR}} or {{p|Kyogre}}{{sup/6|AS}} instead of catching them in the main story, they will reappear in the [[Cave of Origin]] after entering the Hall of Fame. During the [[Delta Episode]], {{p|Rayquaza}} must be caught; defeating, fleeing from or losing to it does not cause it to disappear, the battle yields no [[experience]], and the story cannot be progressed until it is caught. The 31st box in the [[Pokémon Storage System]] does not become available until after the player catches Rayquaza, so it is not possible to avoid the capture even if the player's party and PC are both full. If the player flees from or defeats {{p|Deoxys}} in during the Delta Episode, it will reappear at the Dragonhark altar atop the [[Sky Pillar]] after entering the Hall of Fame again, where it behaves in the same way as all other stationary Legendary Pokémon.

In Pokémon Sun and Moon, {{p|Solgaleo}}{{sup/7|S}} or {{p|Lunala}}{{sup/7|M}} must be caught; defeating, fleeing from or losing to it does not cause it to disappear, the battle yields no [[experience]], and the story cannot be progressed until it is caught. The 31st box in the [[Pokémon Storage System]] does not become available until after the player catches the Legendary Pokémon. If the player defeats, flees from, or loses to {{p|Tapu Koko}} instead of catching it during the post-credits event, [[Lillie]] will comment on this fact, and Tapu Koko will immediately be available to battle again at the [[Ruins of Conflict]]. If the player defeats, flees from or loses to a roaming [[Ultra Beast]] or {{p|Necrozma}}, it will continue to reappear in the area until it is caught (the game reassures the player that it is still in the area).

In Pokémon Ultra Sun and Ultra Moon, {{p|Solgaleo}}{{sup/7|US}} or {{p|Lunala}}{{sup/7|UM}} must be caught for it to disappear; defeating, fleeing from or losing to it does not cause it to disappear and the battle yields no [[experience]]. The 31st box in the [[Pokémon Storage System]] does not become available until after the player catches the Legendary Pokémon.

==In spin-off games==
===Pokémon Mystery Dungeon series===
In the [[Pokémon Mystery Dungeon series]], [[Legendary Pokémon]] that have been battled and are involved in the storyline must be fought again in order to be [[Recruitment|recruited]].

===Pokémon Ranger series===
In the [[Pokémon Ranger series]], the [[Drowsy Guy]] will allow the player to re-do a memorable capture. In {{OBP|Pokémon Ranger|video game}}, he allows the player to re-capture the [[Legendary beasts]], while in [[Pokémon Ranger: Shadows of Almia|the sequel]], he allows the player to re-capture {{p|Darkrai}}. In [[Pokémon Ranger: Guardian Signs]], [[Nema]] allows the player to re-battle several Boss Pokémon on a model of [[Dolce Island]] via the use of her "Many Times Any Time Capture Machine".

===Pokémon Trading Card Game series===
In {{vg|Pokémon Trading Card Game}} and [[Pokémon Trading Card Game 2: The Invasion of Team GR!]], all duelists are available for rematches. However, in some cases, a duelist switches their deck permanently at some point. For instance, the [[rival]] character {{TCG GB|Ronald}} uses four decks in the first game: the first three decks are used in a single {{TCG GB|duel}} each, and then the fourth deck is used whenever the player challenges him for the Champion title at the [[Pokémon Dome]]. Similarly, in the second game, some [[Club Master]]s use a certain deck on their first duel, and then use a different deck in all subsequent duels.

===Pokémon Play It! series===
In [[Pokémon Play It!]] and [[Pokémon Play It! Version 2]], there is no limit to the number of {{pkmn|Trading Card Game}} matches against {{OBP|Julie|Play It!}}.

==In the anime==
With the exception of the [[Orange League]], {{Ash}} has had rematches with at least one Gym Leader, [[Frontier Brain]], [[island kahuna]], or [[World Coronation Series]] opponent in each leg of his {{pkmn|journey}}. It is noted that the list does not list any match-up which could not be defined as a battle.

===[[Indigo League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Kanto}}; background:#{{colorschemedark|Kanto}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{rock color light}}" | [[File:Boulder Badge.png|40px|Boulder Badge]]<br>{{color2|{{rock color dark}}|Brock (anime)|Brock}}
| style="background:#FFF; vertical-align:top" | [[File:Brock Onix Bind.png|150px|Showdown in Pewter City]]<br>''[[EP005|Showdown in Pewter City]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Forfeit'''
| style="background:#FFF; vertical-align:top" | [[File:EP005.png|150px|Showdown in Pewter City]]<br>''[[EP005|Showdown in Pewter City]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Ash forfeits again, but Brock rewards his Badge in recognition of Ash's compassion.'''
|-
! style="background:#{{water color light}}" | [[File:Cascade Badge.png|40px|Cascade Badge]]<br>{{color2|{{water color dark}}|Misty (anime)|Misty}}
| style="background:#FFF; vertical-align:top" | [[File:EP007.png|150px|The Water Flowers of Cerulean City]]<br>''[[EP007|The Water Flowers of Cerulean City]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Interrupted by {{color2|{{green color dark}}|Team Rocket trio|Team Rocket}}<br>Ash earns Badge as thanks for protecting the Gym.'''
| style="background:#FFF; vertical-align:top" | [[File:Misty Mega Gyarados.png|200px|SM043]]<br>''[[SM043|When Regions Collide!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Demonstration battle<br>Victory'''
|- style="background:#FFF"
! style="background:#{{electric color light}}" | [[File:Thunder Badge.png|40px|Thunder Badge]]<br>{{color2|{{electric color dark}}|Lt. Surge}}
| [[File:Lt Surge Raichu Mega Punch.png|150px|Electric Shock Showdown]]<br>''[[EP014|Electric Shock Showdown]]''
| style="color:#{{red color dark}}" | '''Loss'''
| [[File:EP014.png|150px|Electric Shock Showdown]]<br>''[[EP014|Electric Shock Showdown]]''
| style="color:#{{green color dark}}" | '''Victory'''
|-
! style="background:#{{psychic color light}}" | [[File:Marsh Badge.png|40px|Marsh Badge]]<br>{{color2|{{psychic color dark}}|Sabrina}}
| style="background:#FFF; vertical-align:top" | [[File:EP022.png|150px|Abra and the Psychic Showdown]]<br>''[[EP022|Abra and the Psychic Showdown]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Forfeit'''
| style="background:#FFF; vertical-align:top" | [[File:Sabrina and Haunter.png|150px|Haunter versus Kadabra]]<br>''[[EP024|Haunter versus Kadabra]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Interrupted by {{color2|{{green color dark}}|Sabrina's Haunter|Haunter}}, who manages to break Sabrina out of her trance.<br>Ash receives Badge as a token of gratitude.'''
|-
! style="background:#{{fire color light}}; {{roundybl|5px}}" | [[File:Volcano Badge.png|40px|Volcano Badge]]<br>{{color2|{{fire color dark}}|Blaine}}
| style="background:#FFF; vertical-align:top" | [[File:Cinnabar Gym Battlefield.png|150px|Riddle Me This]]<br>''[[EP058|Riddle Me This]]'' and ''[[EP059|Volcanic Panic]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Forfeit'''
| style="background:#FFF; vertical-align:top" | [[File:EP059.png|150px|Volcanic Panic]]<br>''[[EP059|Volcanic Panic]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory'''
|}

===[[Johto League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Johto}}; background:#{{colorschemedark|Johto}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{normal color light}}" | [[File:Plain Badge.png|40px|Plain Badge]]<br>{{color2|{{normal color dark}}|Whitney}}
| style="background:#FFF; vertical-align:top" | [[File:EP158.png|150px|A Goldenrod Opportunity]]<br>''[[EP158|A Goldenrod Opportunity]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Loss'''
| style="background:#FFF; vertical-align:top" | [[File:Ash Totodile battling in vain.png|150px|A Dairy Tale Ending]]<br>''[[EP159|A Dairy Tale Ending]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Unofficial battle<br>Ash wins<br>Ash receives Badge despite the battle being unofficial.'''
|-
! style="background:#{{ice color light}}" | [[File:Glacier Badge.png|40px|Glacier Badge]]<br>{{color2|{{ice color dark}}|Pryce}}
| style="background:#FFF; vertical-align:top" | [[File:EP237.png|150px|As Cold as Pryce]]<br>''[[EP237|As Cold as Pryce]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial one-on-one battle<br>Ash loses'''
| style="background:#FFF; vertical-align:top" | [[File:EP238.png|150px|Nice Pryce, Baby!]]<br>''[[EP238|Nice Pryce, Baby!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Pryce forfeits<br>Ash is rewarded the Badge'''
|-
! style="background:#{{dragon color light}}; {{roundybl|5px}}" |[[File:Rising Badge.png|40px|Rising Badge]]<br>{{color2|{{dragon color dark}}|Clair}}
| style="background:#FFF; vertical-align:top" | [[File:EP252.png|150px|Fangs for Nothin']]<br>''[[EP252|Fangs for Nothin']]''
| style="background:#FFF; color:#{{red color dark}}" | '''Interrupted by<br>{{color2|{{red color dark}}|Team Rocket trio|Team Rocket}}'''
| style="background:#FFF; vertical-align:top" | [[File:EP254.png|150px|Better Eight Than Never]]<br>''[[EP254|Better Eight Than Never]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory'''
|}

===[[Hoenn League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Hoenn}}; background:#{{colorschemedark|Hoenn}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|- style="background:#FFF"
! style="background:#{{fighting color light}}" | [[File:Knuckle Badge.png|40px|Knuckle Badge]]<br>{{color2|{{fighting color dark}}|Brawly}}
| [[File:Brawly Makuhita Vital Throw1.png|150px|Brave the Wave]]<br>''[[AG020|Brave the Wave]]''
| style="color:#{{red color dark}}" | '''Loss'''
| [[File:AG031.png|150px|Just One of the Geysers]]<br>''[[AG031|Just One of the Geysers]]''
| style="color:#{{green color dark}}" | '''Victory'''
|- style="background:#FFF"
! style="background:#{{electric color light}}" | [[File:Dynamo Badge.png|40px|Dynamo Badge]]<br>{{color2|{{electric color dark}}|Wattson}}
| [[File:AG040.png|150px|Watt's with Wattson?]]<br>''[[AG040|Watt's with Wattson?]]''
| style="color:#{{green color dark}}" | '''Ash wins with an overcharged {{color2|{{green color dark}}|Ash's Pikachu|Pikachu}}.<br>Wattson insists Ash keeps the Badge.'''
| [[File:Wattson Manectric Tackle.png|150px|Manectric Charge]]<br>''[[AG059|Manectric Charge]]''
| style="color:#{{red color dark}}" | '''Unofficial rematch<br>Ash loses'''
|- style="background:#FFF"
! style="background:#{{normal color light}}; {{roundybl|5px}}" | [[File:Balance Badge.png|40px|Balance Badge]]<br>{{color2|{{normal color dark}}|Norman}}
| [[File:AG003.png|150px|There's No Place Like Hoenn]]<br>''[[AG003|There's No Place Like Hoenn]]''
| style="color:#{{red color dark}}" | '''Unofficial one-on-one battle<br>Ash loses'''
| [[File:AG070.png|150px|Balance of Power]]<br>''[[AG070|Balance of Power]]''
| style="color:#{{green color dark}}; {{roundybr|5px}}" | '''Official match<br>Ash wins'''
|}

==={{gdis|Battle Frontier|III}}===
{| class="roundy" style="border:3px solid #{{colorschemelight|Frontier}}; background:#{{colorschemedark|Frontier}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|- style="background:#FFF"
! style="background:#{{frontier color light}}" | [[File:Abilitysymbol.png|40px|Ability Symbol]]<br>{{color2|{{frontier color dark}}|Anabel}}
| [[File:AG169.png|150px|Talking a Good Game!]]<br>''[[AG169|Talking a Good Game!]]''
| style="color:#{{red color dark}}" | '''Loss'''
| [[File:AG170.png|150px|Second Time's the Charm!]]<br>''[[AG170|Second Time's the Charm!]]''
| style="color:#{{green color dark}}" | '''Victory'''
|-
| style="background:#{{frontier color light}}; {{roundybl|5px}}" rowspan="2" | [[File:Bravesymbol.png|40px|Brave Symbol]]<br>'''{{color2|{{frontier color dark}}|Brandon (anime)|Brandon}}'''
| style="background:#FFF" rowspan="2" | [[File:AG178.png|150px|Battling the Enemy Within!]]<br>''[[AG178|Battling the Enemy Within!]]''
! style="background:#FFF; color:#{{red color dark}}" rowspan="2" | Ash is {{color2|{{red color dark}}|King of Pokélantis|possessed}}, and the match is declared unofficial.
| style="background:#FFF" | [[File:AG186.png|150px|Overjoyed!]]<br>''[[AG186|Overjoyed!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''First official match<br>Ash loses'''
|-
| style="background:#FFF" | [[File:AG190.png|150px|Pace - The Final Frontier!]]<br>''[[AG189|Gathering the Gang of Four!]]'' and ''[[AG190|Pace - The Final Frontier!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Second official match<br>Ash wins'''
|}

===[[Sinnoh League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Sinnoh}}; background:#{{colorschemedark|Sinnoh}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{rock color light}}" | [[File:Coal Badge.png|40px|Coal Badge]]<br>{{color2|{{rock color dark}}|Roark}}
| style="background:#FFF; vertical-align:top" | [[File:DP016.png|150px|A Gruff Act to Follow!]]<br>''[[DP016|A Gruff Act to Follow!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Loss'''
| style="background:#FFF; vertical-align:top" | [[File:DP018.png|150px|O'er the Rampardos We Watched!]]<br>''[[DP018|O'er the Rampardos We Watched!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory'''
|-
! style="background:#{{grass color light}}" | [[File:Forest Badge.png|40px|Forest Badge]]<br>{{color2|{{grass color dark}}|Gardenia}}
| style="background:#FFF; vertical-align:top" | [[File:DP031.png|150px|The Grass-Type Is Always Greener!]]<br>''[[DP031|The Grass-Type Is Always Greener!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial battle<br>Ash loses'''
| style="background:#FFF; vertical-align:top" | [[File:DP037.png|150px|The Grass Menagerie!]]<br>''[[DP037|The Grass Menagerie!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory'''
|-
! style="background:#{{ghost color light}}" | [[File:Relic Badge.png|40px|Relic Badge]]<br>{{color2|{{ghost color dark}}|Fantina}}
| style="background:#FFF; vertical-align:top" | [[File:Fantina Drifblim Hypnosis.png|150px|Playing the Leveling Field!]]<br>''[[DP093|Playing the Leveling Field!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial battle<br>Forfeit'''
| style="background:#FFF; vertical-align:top" | [[File:DP102.png|150px|Shield with a Twist!]]<br>''[[DP102|Shield with a Twist!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory'''
|-
! style="background:#{{electric color light}}; {{roundybl|5px}}" rowspan="2" | [[File:Beacon Badge.png|40px|Beacon Badge]]<br>{{color2|{{electric color dark}}|Volkner}}
| style="background:#FFF" rowspan="2" | [[File:Volkner Luxray Spark.png|200px|The Fleeing Tower of Sunyshore!]]<br>''[[DP166|The Fleeing Tower of Sunyshore!]]''
! style="background:#FFF; color:#{{red color dark}}" rowspan="2" | Interrupted by {{color2|{{red color dark}}|Team Rocket trio|Team Rocket}}
| style="background:#FFF" | [[File:DP179.png|200px|The Eighth Wonder of the Sinnoh World!]]<br>''[[DP179|The Eighth Wonder of the Sinnoh World!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory'''
|-
| style="background:#FFF" | [[File:JN077.png|200px|Ultra Exciting from the Shocking Start!]]<br>''[[JN077|Ultra Exciting from the Shocking Start!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''{{color2|{{green color dark}}|World Coronation Series}}<br>match<br>Victory<br>Ash's rank rises to 64.'''
|}

===[[Unova League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Unova}}; background:#{{colorschemedark|Unova}}; color:#fff; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{normal color light}}; {{roundybl|5px}}" | [[File:Basic Badge.png|40px|Basic Badge]]<br>{{color2|{{normal color dark}}|Lenora}}
| style="background:#FFF" | [[File:BW015.png|200px|The Battle According to Lenora!]]<br>''[[BW015|The Battle According to Lenora!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Loss'''
| style="background:#FFF" | [[File:BW016.png|200px|Rematch at the Nacrene Gym!]]<br>''[[BW016|Rematch at the Nacrene Gym!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory'''
|}

===[[Kalos League]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Kalos}}; background:#{{colorschemedark|Kalos}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{bug color light}}" | [[File:Bug Badge.png|40px|Bug Badge]]<br>{{color2|{{bug color dark}}|Viola}}
| style="background:#FFF" | [[File:XY005.png|200px]]<br>''[[XY005|A Blustery Santalune Gym Battle!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Loss'''
| style="background:#FFF" | [[File:XY006.png|200px]]<br>''[[XY006|Battling on Thin Ice!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory'''
|-
| style="background:#{{fighting color light}}" rowspan="4" | [[File:Rumble Badge.png|40px|Rumble Badge]]<br>'''{{color2|{{fighting color dark}}|Korrina (anime)|Korrina}}'''
| style="background:#FFF" rowspan="4" | [[File:XY030 Ash VS Korrina.png|200px|Mega Revelations!]]<br>''[[XY030|Mega Revelations!]]''
! style="background:#FFF; color:#{{red color dark}}" rowspan="4" | First unofficial battle<br>Loss
| style="background:#FFF" | [[File:Korrina Mega Lucario berserk.png|200px|The Aura Storm!]]<br>''[[XY032|The Aura Storm!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Second unofficial battle<br>Battle called off due to {{color2|{{red color dark}}|Korrina's Lucario|Lucario}} losing control.'''
|-
| style="background:#FFF" | [[File:XY033.png|200px|Calling from Beyond the Aura!]]<br>''[[XY033|Calling from Beyond the Aura!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Third unofficial battle<br>Battle called off due to {{color2|{{red color dark}}|Korrina's Lucario|Lucario}} losing control again.'''
|-
| style="background:#FFF" | [[File:XY044.png|200px|XY044]]<br>''[[XY044|Showdown at the Shalour Gym!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Official battle<br>Victory'''
|-
| style="background:#FFF" | [[File:JN025.png|200px|JN025]]<br>''[[JN025|A Festival Reunion!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''{{color2|{{green color dark}}|World Coronation Series}}<br>Battle Festival Challenge<br>Victory<br>Ash's rank rises to 921<br>and advances to Great Class.'''
|-
! style="background:#{{electric color light}}" | [[File:Voltage Badge.png|40px|Voltage Badge]]<br>{{color2|{{electric color dark}}|Clemont (anime)|Clemont}}
| style="background:#FFF; vertical-align:top" | [[File:XY001 Ash VS Clemont.png|200px]]<br>''[[XY001|Kalos, Where Dreams and Adventures Begin!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial battle<br>Interrupted by {{color2|{{red color dark}}|Team Rocket trio|Team Rocket}}'''
| style="background:#FFF; vertical-align:top" | [[File:XY067.png|200px]]<br>''[[XY067|The Moment of Lumiose Truth!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Official battle<br>Victory'''
|-
! style="background:#{{ice color light}}; {{roundybl|5px}}" | [[File:Iceberg Badge.png|40px|Iceberg Badge]]<br>{{color2|{{ice color dark}}|Wulfric}}
| style="background:#FFF" | [[File:XY120.png|200px]]<br>''[[XY120|All Hail the Ice Battlefield!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Loss'''
| style="background:#FFF" | [[File:XY122.png|200px]]<br>''[[XY122|A Real Icebreaker!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory'''
|}

===[[Island challenge]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Alola}}; background:#{{colorschemedark|Alola}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{dark color light}}" | [[File:Dream Darkinium Z Sprite.png|40px|Darkinium Z]]<br>{{color2|{{dark color dark}}|Nanu}}
| style="background:#FFF" | [[File:Nanu Krookodile Sand Tomb.png|200px]]<br>''[[SM074|Tough Guy Trials!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial battle<br>Loss'''
| style="background:#FFF" | [[File:SM077.png|200px]]<br>''[[SM077|Guiding an Awakening!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory<br>Awarded the {{color2|{{green color dark}}|Lycanium Z}}'''
|-
! style="background:#{{ground color light}}; {{roundybl|5px}}" | [[File:Dream Groundium Z Sprite.png|40px|Groundium Z]]<br>{{color2|{{ground color dark}}|Hapu}}
| style="background:#FFF" | [[File:SM104.png|200px]]<br>''[[SM104|That's Some Spicy Island Research!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unofficial battle<br>Loss'''
| style="background:#FFF" | [[File:SM109.png|200px]]<br>''[[SM109|A Grand Debut!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Victory<br>Awarded the {{color2|{{green color dark}}|Steelium Z}}'''
|}

===[[World Coronation Series]]===
{| class="roundy" style="border:3px solid #{{colorschemelight|Galar}}; background:#{{colorschemedark|Galar}}; margin:auto; text-align:center"
! style="width:100px" | Opponent
! style="width:200px" | First match
! style="width:200px" | Result
! style="width:200px" | Rematch
! style="width:200px" | Result
|-
! style="background:#{{green color light}}" | [[File:Dream Great Ball Sprite.png|40px|Great Class]]<br>{{color2|{{green color dark}}|Rinto}}
| style="background:#FFF" | [[File:Rinto Gallade False Swipe.png|200px]]<br>''[[JN051|Trials of a Budding Master!]]''
| style="background:#FFF; color:#{{red color dark}}" | '''Unranked battle<br>Loss'''
| style="background:#FFF" | [[File:JN060.png|200px]]<br>''[[JN060|Beyond Chivalry… Aiming to be a Leek Master!]]''
| style="background:#FFF; color:#{{green color dark}}"  | '''Victory<br>Ash's rank rises to 184'''
|-
! rowspan=2 style="background:#{{yellow color light}}" | [[File:Dream Ultra Ball Sprite.png|40px|Ultra Class]]<br>{{color2|{{yellow color dark}}|Bea}}
| rowspan=2 style="background:#FFF" | [[File:JN034.png|200px]]<br>''[[JN034|Solitary and Menacing!]]''
| rowspan=2 style="background:#FFF; color:#{{red color dark}}" | '''Loss<br>Ash's rank drops to 930'''
| style="background:#FFF" | [[File:JN039.png|200px]]<br>''[[JN039|Octo-Gridlock at the Gym!]]''
| style="background:#FFF; color:#000" | '''Draw<br>No change in ranking'''
|-
| style="background:#FFF" | [[File:JN085.png|200px]]<br>''[[JN085|Battle Three With Bea!]]''<br>and ''[[JN086|A Battle of Mega Versus Max!]]''
| style="background:#FFF; color:#{{green color dark}}" | '''Victory<br>Ash's rank rises to 36'''
|-
! rowspan=2 style="background:#{{red color light}}; {{roundybl|5px}}" | [[File:Dream Master Ball Sprite.png|40px|Masters Eight]]<br>{{color2|{{red color dark}}|Leon (anime)|Leon}}
| rowspan=2 style="background:#FFF" | [[File:JN013.png|200px]]<br>''[[JN013|The Climb to Be the Very Best!]]''
| rowspan=2 style="background:#FFF; color:#{{red color dark}}" |  '''Unofficial battle<br>Loss'''
| style="background:#FFF" | [[File:JN132.png|200px]]<br>''[[JN129|A Flood of Torrential Gains!]]''<br>to ''[[JN132|Partners in Time!]]''
| style="background:#FFF; color:#{{green color dark}}; {{roundybr|5px}}" | '''Official battle<br>Victory<br>Ash becomes the new Monarch'''
|}

==Trivia==
* [[Giovanni]] is the only in-game Gym Leader that cannot be rematched an indefinite amount of times. However, he can be battled multiple times via an event at [[Tohjo Falls]], if the player has multiple {{p|Celebi}}, as well as at the [[Pokémon World Tournament]].
** [[Koga]], the other former Kanto Gym Leader, has been able to be rematched indefinitely since Generation II, where he was an [[Elite Four]] member, as well as in [[Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!]].

==In other languages==
{{langtable|color={{locationcolor/light|underwater}}|bordercolor={{locationcolor/med|underwater}}
|da=Omkamp<br>Revanchekamp
|nl=Rematch
|fi=Uusintaottelu
|fr=
|de=
|it=Rivincita
|ko=
|no=Omkamp
|pl=Rewanż
|es=
|sv=Revanchmatch<br>Retur-match
|vi=Trận tái đấu
}}
==References==
<references/>
{{-}}
{{Project Games notice|game mechanic}}

[[Category:Terminology]]
[[Category:Game mechanics]]

[[de:Rückkampf]]
[[es:Revancha]]
[[fr:Revanche]]
[[it:Rivincita (lotta Pokémon)]]
[[ja:再戦]]
[[zh:重复对战]]