Gable Steveson KO’d in 12 Seconds at UFC 331; Olympic Prospect’s Undefeated Run Ends

Gable Steveson’s perfect record and heavyweight hype evaporated in 12 seconds at UFC 331 on September 19 when Marine veteran Sean Sharaf caught him with a left hook to the chin, dropping the Olympic gold medalist cold. Steveson entered as a -2500 betting favorite but left the octagon immediately after regaining consciousness, refusing to stay for the official result announcement. The knockout ranks among the biggest upsets in UFC history and triggered sharp criticism from commentators and UFC leadership alike.

How the upset unfolded

Steveson (4-0 entering the fight) and Sharaf (0-2 in the octagon) traded jabs and low kicks for just a few seconds before Sharaf followed a right hand with a hard left hook that connected flush on Steveson’s chin. The 26-year-old prospect dropped immediately. Sharaf moved in for another strike but the referee stopped the fight. The entire bout lasted 12 seconds, making it one of the quickest finishes in UFC heavyweight history. Sharaf, a six-year Marine Corps veteran who served as a Marine Security Guard, improved to 5-2 in his professional record.

Betting markets and expectations shattered

Steveson was listed as high as a -2500 favorite across major sportsbooks, with Sharaf sitting at +1200 as an underdog. The odds gap reflected Steveson’s Olympic wrestling pedigree and undefeated 4-0 record heading into UFC 331 at Crypto.com Arena in Los Angeles. UFC CEO Dana White called it one of the biggest betting upsets in UFC history. Sharaf’s victory instantly erased the narrative that Steveson was a future heavyweight champion.

Criticism over sportsmanship and walkout

Commentator Daniel Cormier said Steveson was “an ungrateful loser” for leaving the cage without offering Sharaf a handshake or staying for Bruce Buffer’s official announcement. Cormier, a former UFC champion, noted that Steveson must “take your licking whenever stuff doesn’t go your way.” Joe Rogan added that the hype and betting odds got to Steveson’s head, causing him to stand flat-footed and vulnerable. White defended Steveson slightly, saying “when you’re in that position, obviously he had huge expectations for himself, it happens,” but the walkout drew widespread backlash on social media.

What comes next for Steveson

Steveson dropped to 4-1 as a professional and 1-1 inside the UFC. Analysts expect the promotion to give him a significant step back in competition after the knockout loss. His UFC debut in July at UFC 329 against Elisha Ellison already showed he struggled against certain opponents. The Olympic wrestler will likely face an opponent coming off multiple losses and with limited knockout power as he attempts to rebuild his reputation and prove he can recover from the devastating loss.

Final Thoughts

Steveson’s loss erases the “future champion” narrative overnight, but his Olympic wrestling credentials remain intact. The real damage may be reputational: his sportsmanship criticism and the 12-second knockout will define his comeback story. For UFC betting markets, the upset reinforces Dana White’s point: anything is possible when two fighters enter the octagon.

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