Sumo Conference

The Sumo Conference is an -exclusive Pokémon Sumo tournament held annually in Rikishii Town, Johto.

History
The prizes available upon achieving victory in the Sumo Conference is a King's Rock and a year's supply of Pokémon food. entered in the competition must weigh 80 (176.4 ) or more. Only basic physical moves are allowed, and the goal is to eventually throw the opponent out of the sumo ring. If the executive of the Sumo Conference—Shonosuke—is present and catches a law-breaking move that the referee didn't see, he will make a protest against the referee and reveal what law was broken. The referee will then disqualify the law-breaking Trainer.

In Ring Masters, when and  visited Rikishii Town, the 35th annual Pokémon Sumo Conference was taking place. Ash decided to enter the competition with his, and managed to win the competition after defeating former champion Raiden, being the first rookie to ever win the competition.

Trivia

 * There were many Pokémon that, despite their weight in the Pokédex being under the minimum weight qualifications, had entered the competition. However, it is possible that Pokémon have varying weights in the anime, unlike in the games.

In other languages
Pokémon Sumo Tournoi Pokémon Sumo Conferenza di Sumo ポケモン相撲大会