Career
He has fought the majority of his career as a Welterweight for Pancrase, but moved down to Lightweight in 2008 when he joined Mobile Marketing Association promotion World Victory Road. Kitaoka has fought the majority of his career as a welterweight for Pancrase. Sengoku
In the first round of the tournament at Sengoku 4 on 24 August 2008 he was put up against American Clay French.
Kitaoka made short work of French, winning by submission due to an achilles lock at 1:21 of the first round.
Kitaoka again made short work of his opponent winning by a heel hook submission at 1:16 of the first round. The fight proved longer than Kitaoka"s three previous fights as it went the distance completing all three five-minute rounds with Kitaoka being awarded the unanimous decision, thus winning the 2008 Sengoku Lightweight Grand Prix.
The two fought at Sengoku no Ran 2009 on 4 January 2009 and ended with Kitaoka defeating Gomi with an achilles lock at 1:41 of the first round. In his first title defence, on August 2, 2009, at World Victory Road Presents: Sengoku 9, Kitaoka lost his lightweight championship to Mizuto Hirota.
Return to Pancrase
Following his title loss in Sengoku, Kitaoka returned to his home promotion Pancrase picking up wins over Jorge Rogrigues and Kuniyoshi Hironaka.
DREAM
Kitaoka faced former UFC fighter Willamy Freire at Dream 17. Kitaoka faced teammate and fellow Yuki Nakai black belt Shinya Aoki at DREAM"s year end event for the DREAM Lightweight Championship. He lost the fight via unanimous decision.
Sengoku Raiden Championship
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