John Yoo Record: 0-1-0

Bellator debut

Yoo's professional debut came at Bellator 137 on May 15, 2015, where he faced the unbeaten prospect Albert Morales. Morales proved too much on the night, stopping Yoo by KO/TKO in the third round to hand him the only result on his Combat Edge record. It was a tough introduction to the professional ranks against an opponent who would go on to reach the UFC, and the loss stands as the defining data point of Yoo's career.

Fighting style

As a product of the 10th Planet system, Yoo's foundation was no-gi jiu-jitsu and submission grappling, the discipline that 10th Planet is built around. His professional sample is small — a single fight that ended in a third-round stoppage loss — so there is limited tape from which to draw firm conclusions about his all-around game. What the record does show is a willingness to compete at a high level early, with a grappling-first identity shaped by his gym.

Career highlights

• Bellator main-roster debut — opened his professional career on a Bellator card at Bellator 137, a step up many debuting fighters never get.
• 10th Planet pedigree — trained out of 10th Planet Costa Mesa, building his game on Eddie Bravo's no-gi submission system.
• Tested against a UFC-bound prospect — shared the cage with Albert Morales, who advanced to the UFC after their meeting.