Futurama Episodes

When Bender goes to the movies, he ends up wrestling around to get a better view. While brawling, he gets discovered and signs on as the featured attraction in the brutal Ultimate Robot Fighting League — with some knock-out results.
wikipedia.org summary:
Bender inadvertently defeats a champion robot boxer and is hired to become a member of the Ultimate Robot Fighting League. Leela agrees to train Bender to get back at her old sexist martial arts teacher Fnog. Bender becomes more popular with each fight he wins, which all turn out to be fixed, causing him to neglect his training. Soon, however, Bender’s popularity begins to dwindle and he is instructed to throw the next match against a giant robot called Destructor. Leela only agrees to help Bender upon learning his opponent is trained by Fnog. During the fight, Leela discovers Destructor is being controlled remotely by Fnog, who she fights and beats up. Bender tries to use this opportunity to defeat Destructor, but his opponent falls on him and he loses the match anyway.
imdb.com summary:
Bender gets into trouble with a famous wrestling robot and accidentally knocks him out. Instantly, he is offered to fight in the professional robot wrestling league and Leela talks him into it, offering to train him. Bender soon figures out how the robot wrestling business works like and enjoys being rich and popular. But soon fame takes hold of him and he’s about to pay the price for his behavior.