Gable Steveson’s unbeaten start in MMA came to a sudden end at UFC 331, with the former WWE wrestler knocked out by Sean Sharaf in just 12 seconds.

Sharaf connected with a left hook before landing two follow-up punches, prompting the referee to stop the contest. The quick finish handed Steveson his first MMA defeat and marked one of the fastest knockouts in UFC heavyweight history.

Steveson entered the fight undefeated, while Sharaf carried a 4-2 record into the heavyweight clash. It proved a significant victory for Sharaf, who needed only seconds to settle the contest.

The build-up had also attracted attention after Sharaf referenced rape allegations involving Steveson during the pre-event press conference.

THAT. JUST. HAPPENED.

Sean Sharaf knocks Gable Steveson OUT COLD

📺 @paramountplus pic.twitter.com/LKcjPrwqHd

, UFC on Paramount+ (@UFConParamount) September 20, 2026