Who did Sean O'Malley lose to?

"Suga" Sean O’Malley is a leading professional mixed martial artist who competes in the bantamweight division of the elite professional martial arts organization, the Ultimate Fighting Championship (UFC). He made his professional MMA debut on March 6, 2015, against Josh Reyes at Intense Championship Fighting 17 in a bantamweight bout. O’Malley won the fight by a first-round TKO and started his professional career in a dominant fashion.

Sean O’Malley generated a lot of hype in the UFC right after getting signed by the promotion. Given the traction that surrounded him, O’Malley received a shot at the UFC bantamweight title against Aljamain Sterling on August 19, 2023, at UFC 292. He shut Sterling’s lights in the second round and became the bantamweight champion of the promotion.

Also Read: Sean O'Malley Last Fight

Sean O’Malley Losses

Sean O’Malley has suffered two losses as of May 2025. Here is a look on his professional mixed martial arts defeat so far.

Marlon Vera vs. Sean O’Malley

Marlon Vera and Sean O’Malley crossed paths with each other in their first meeting on August 15, 2020, at UFC 252: Miocic vs. Cormier 3. Vera defeated him via first-round TKO after raining a flurry of punches and elbows on O’Malley.

Sean O'Malley vs. Merab Dvalishvili 1

Sean O'Malley's second defeat came against Merab Dvalishvili at Noche UFC 306 on September 14, 2024. Dvalishvili outclassed O'Malley and won the fight via a unanimous decision.

Sean O’Malley Boxing Record

Besides regularly competing in professional mixed martial arts, O’Malley fought in a professional boxing bout. He faced David Courtney on July 16, 2016, in a four-round boxing fight. O’Malley outclassed Courtney and defeated him in the first round via TKO.

Also Read: How Old is Sean O'Malley?