Other World Tournament
From Multiversal Omnipedia
The Other World Tournament was a martial arts tournament held in "celebration" of King Kai (North Kai)'s death, with each of the four Kais' champions battling for a chance to train under the Grand Kai. Goku was the winner, but the Grand Kai used a technicality to disqualify him, worried about the fact that he and other contestants, such as Pikkon, were so much stronger than he.
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Known as the Annoyoichi Budokai, or Heaven's Tournament, in Japan.