The Winner! (「少年の部」勝者決定！ “Shōnen no Bu” Shōsha Kettei!, lit. "The “Boys Division” Winner is Decided!") is the four hundred thirty-fifth chapter of the Dragon Ball manga.
Trunks says he can win without using his left hand, but Goten doesn't believe him. Trunks then flies forward, hitting with his right arm only, but Goten blocks it and then kicks him in the face. Goten blocks another hit and punches Trunks in the face, and they break away. Trunks shoots a small blast toward Goten, but it hits the ring as Goten flies up into the air. Goten composes himself and then dives straight down at Trunks. Trunks realizes what he's planning, and decides to hold still, until he jumps out of the way at the last moment. Goten manages to fly after Trunks instead of crashing into the ring, and so Trunks turns Super Saiyan in desperation and blasts Goten in the back using his left hand. The little blast knocks Goten into the audience. Ring out, Trunks wins!
Goten goes back to the ring and yells at Trunks for cheating. Not just for going Super Saiyan, but he used his left hand, too. Trunks says Goten had used Super Saiyan as well, and he didn't directly hit him with his left hand. Goku is surprised Trunks can become a Super Saiyan as well, but Vegeta just laughs about his son being better. Trunks tells Goten he can have three of his toys, which makes Goten happy again. The announcer comes into the ring, saying that up next is the special attraction fight against the world champion, Mr. Satan, who is standing backstage and absolutely speechless.