The Clubsplosion (Japanese: ドンナマイト Donamite) is an anime-exclusive, 16-competitor tournament held in Ambiga Town, Unova. It takes place in the local Battle Club and it is hosted by the town's Don George and Freddy O'Martian. It took place between The Clubsplosion Begins! and Commanding the Clubsplosion Crown!.
While it is similar to the Club Battle held in Nimbasa Town, it focuses more on hand-to-hand combat as it is a tournament geared towards Trainers of Fighting-type Pokémon. However, Pokémon of all types are allowed to participate. The winner receives a year's supply of vitamins.
Montgomery was the winner of the previous year's Clubsplosion but lost his championship title to Stephan in Commanding the Clubsplosion Crown!.
The Clubsplosion is a 16-competitor tournament consisting of four rounds, and entrants are allowed one Pokémon each. All rounds consisted of Single Battles against randomly matched up Trainers by a computer.