A win over Sterling
O'Malley beat Aljamain Sterling in a title fight at UFC 292: Sterling vs. O'Malley on Aug 19, 2023.
MMAUFCBantamweightSwitch
Sean O'Malley
United StatesAge, record and fight historySean O'Malley is a UFC bantamweight who beat Marlon Vera in a title fight at UFC 299 on Mar 9, 2024.
23 pro fights16 UFC fights4 title fights
Updated
About Sean O'Malley
Born in Helena, Montana, on October 24, 1994, O'Malley has fought at Bantamweight in the UFC since 2017 and fights from the switch stance. His professional career began in 2013, and he has trained at The MMA Lab since 2014. He holds a brown belt in Brazilian jiu-jitsu under Augusto "Tanquinho" Mendes. O'Malley fights out of Peoria, Arizona, and in his first UFC fight he beat Terrion Ware by unanimous decision at The Ultimate Fighter: A New World Champion Finale on Dec 1, 2017.
Agatha Research DeskUpdated Oct 27, 2026Fight history16
Every UFC fight in our records, newest first. A gold mark is a title fight.
| Date | Event | Opponent | Result | Method | Rd | Time |
|---|---|---|---|---|---|---|
| Jun 14, 2026 | UFC Freedom 250 | Aiemann Zahabi | W | KO/TKO | 2 | 4:02 |
| Jan 24, 2026 | UFC 324: Gaethje vs. Pimblett | Song Yadong | W | Decision (unanimous) | 3 | 5:00 |
| Jun 7, 2025 | UFC 316: Dvalishvili vs. O'Malley 2 | Merab Dvalishvili | L | Submission | 3 | 4:42 |
| Sep 14, 2024 | UFC 306: Riyadh Season Noche UFC | Merab Dvalishvili | L | Decision (unanimous) | 5 | 5:00 |
| Mar 9, 2024 | UFC 299: O'Malley vs. Vera 2 | Marlon Vera | W | Decision (unanimous) | 5 | 5:00 |
| Aug 19, 2023 | UFC 292: Sterling vs. O'Malley | Aljamain Sterling | W | KO/TKO | 2 | 0:51 |
| Oct 22, 2022 | UFC 280: Oliveira vs. Makhachev | Petr Yan | W | Decision (split) | 3 | 5:00 |
| Jul 2, 2022 | UFC 276: Adesanya vs. Cannonier | Pedro Munhoz | NC | Could not continue | 2 | 3:09 |
| Dec 11, 2021 | UFC 269: Oliveira vs. Poirier | Raulian Paiva | W | KO/TKO | 1 | 4:42 |
| Jul 10, 2021 | UFC 264: Poirier vs. McGregor 3 | Kris Moutinho | W | KO/TKO | 3 | 4:33 |
| Mar 27, 2021 | UFC 260: Miocic vs. Ngannou | Thomas Almeida | W | KO/TKO | 3 | 3:52 |
| Aug 15, 2020 | UFC 252: Miocic vs. Cormier 3 | Marlon Vera | L | KO/TKO | 1 | 4:40 |
Show 4 more
| Jun 6, 2020 | UFC 250: Nunes vs. Spencer | Eddie Wineland | W | KO/TKO | 1 | 1:54 |
| Mar 7, 2020 | UFC 248: Adesanya vs. Romero | Jose Quinonez | W | KO/TKO | 1 | 2:02 |
| Mar 3, 2018 | UFC 222: Cyborg vs. Kunitskaya | Andre Soukhamthath | W | Decision (unanimous) | 3 | 5:00 |
| Dec 1, 2017 | The Ultimate Fighter: A New World Champion Finale | Terrion Ware | W | Decision (unanimous) | 3 | 5:00 |
How he is doing now
UFC record12-3, 1 NC16 fights since 2017
Pro record20-3-023 pro fights
Last fightJun 14beat Aiemann Zahabi
Last 53-2WWLLWNewest first. Two wins in a row.
Did you know?!
Title fight at UFC 316
O'Malley lost to Merab Dvalishvili in a title fight at UFC 316: Dvalishvili vs. O'Malley 2 on Jun 7, 2025.
Career
13years2013 to 2026
- 2017UFC debutBeat Terrion Ware
- Aug 2023ChampionBeat Aljamain Sterling
- Sep 2024Lost the beltMerab Dvalishvili
- Jun 14, 2026Latest fightBeat Aiemann Zahabi
Title fights
- Jun 7, 2025: lost vs Merab DvalishviliUFC 316: Dvalishvili vs. O'Malley 2
- Sep 14, 2024: lost vs Merab DvalishviliUFC 306: Riyadh Season Noche UFC
- Mar 9, 2024: won vs Marlon VeraUFC 299: O'Malley vs. Vera 2
- Aug 19, 2023: won vs Aljamain SterlingUFC 292: Sterling vs. O'Malley
How his UFC fights ended
12 wins
KO/TKO 7Decision 5
3 losses
KO/TKO 1Submission 1Decision 1
Divisions
- Bantamweight: 12-32017 to 2026, 16 UFC fights
First UFC fight
Dec 1, 2017: beat Terrion Ware by unanimous decisionThe Ultimate Fighter: A New World Champion Finale, round 3, 5:00
Latest fight
Jun 14, 2026: beat Aiemann Zahabi by KO/TKOUFC Freedom 250, round 2, 4:02
Most often against
The fighters he has met more than once in the UFC, with the result of each run.
Marlon Vera2 fights, 1 for a title
1-1Level
Aug 15, 2020 to Mar 9, 2024
Merab Dvalishvili2 fights, 2 for a title
0-2O'Malley trails
Sep 14, 2024 to Jun 7, 2025
He has met 12 other UFC opponents once each.
Sources and updates
Fights, records and schedules come from Agatha's own records: ESPN's fighter records and results, and the UFC fight history in our data.
The professional record counts the UFC fight history in our data and ESPN's results after it: ESPN's own record has not caught up with them yet.
Updated Oct 28, 2026, 6:36 AM ET. Results and form refresh after every fight; biography facts are checked weekly.