This article is about an episode of the Pokémon animated series that has not been dubbed into English. As such, its coverage may contain romanized Japanese names, rather than dub names.
Old Rivals, New Tricks (Japanese: ポケモンコンテスト!タツナミ大会!!Pokémon Contest! Tatsunami Tournament!!) is the 123rd episode of the Diamond & Pearl series, and the 589th episode of the Pokémon anime. It first aired in Japan on April 16, 2009 and will air in the United States on September 5, 2009 along with Stopped in the Name of Love.
Spoiler warning: this article may contain major plot or ending details.