THE NUMBERS
FROM DEBUT TO NEXT BELL
EVERY RECORDED BOUT
Complete professional fight history, including competition before and outside UFC. Use the controls to isolate an opponent, promotion, method or result.
| Result | Date / record | Opponent | Event | Finish details |
|---|---|---|---|---|
| W | 20–3–0 (1 NC) after bout | Aiemann ZahabiView status and profile → | UFC White House - Freedom 250: Topuria vs. Gaethje | TKO (Punches)Round 2 Time 4:02 Referee Jason Herzog |
| W | 19–3–0 (1 NC) after bout | Yadong SongView status and profile → | UFC 324 - Gaethje vs. Pimblett | Decision (Unanimous)Round 3 Time 5:00 Referee Herb Dean |
| L | 18–3–0 (1 NC) after bout | Merab DvalishviliView status and profile → | UFC 316 - Dvalishvili vs. O'Malley 2 | Submission (North-South Choke)Round 3 Time 4:42 Referee Jason Herzog |
| L | 18–2–0 (1 NC) after bout | Merab DvalishviliView status and profile → | UFC 306 - Noche UFC: O'Malley vs. Dvalishvili | Decision (Unanimous)Round 5 Time 5:00 Referee Herb Dean |
| W | 18–1–0 (1 NC) after bout | Marlon VeraView status and profile → | UFC 299 - O'Malley vs. Vera 2 | Decision (Unanimous)Round 5 Time 5:00 Referee Keith Peterson |
| W | 17–1–0 (1 NC) after bout | Aljamain SterlingView status and profile → | UFC 292 - Sterling vs. O'Malley | TKO (Punches)Round 2 Time 0:51 Referee Marc Goddard |
| W | 16–1–0 (1 NC) after bout | Petr YanView status and profile → | UFC 280 - Oliveira vs. Makhachev | Decision (Split)Round 3 Time 5:00 Referee Jason Herzog |
| NC | 15–1–0 (1 NC) after bout | Pedro MunhozView status and profile → | UFC 276 - Adesanya vs. Cannonier | No Contest (Accidental Eye Poke)Round 2 Time 3:09 Referee Jason Herzog |
| W | 15–1–0 after bout | Raulian PaivaView status and profile → | UFC 269 - Oliveira vs. Poirier | TKO (Punches)Round 1 Time 4:42 Referee Jason Herzog |
| W | 14–1–0 after bout | Kris MoutinhoView status and profile → | UFC 264 - Poirier vs. McGregor 3 | TKO (Punches)Round 3 Time 4:33 Referee Herb Dean |
| W | 13–1–0 after bout | Thomas AlmeidaView status and profile → | UFC 260 - Miocic vs. Ngannou 2 | KO (Punch)Round 3 Time 3:52 Referee Mark Smith |
| L | 12–1–0 after bout | Marlon VeraView status and profile → | UFC 252 - Miocic vs. Cormier 3 | TKO (Elbows and Punches)Round 1 Time 4:40 Referee Herb Dean |
| W | 12–0–0 after bout | Eddie WinelandView status and profile → | UFC 250 - Nunes vs. Spencer | KO (Punch)Round 1 Time 1:54 Referee Herb Dean |
| W | 11–0–0 after bout | Jose QuinonezView status and profile → | UFC 248 - Adesanya vs. Romero | TKO (Head Kick and Punches)Round 1 Time 2:02 Referee Dan Miragliotta |
| W | 10–0–0 after bout | Andre SoukhamthathView status and profile → | UFC 222 - Cyborg vs. Kunitskaya | Decision (Unanimous)Round 3 Time 5:00 Referee Mark Smith |
| W | 9–0–0 after bout | Terrion WareView status and profile → | UFC - The Ultimate Fighter 26 Finale | Decision (Unanimous)Round 3 Time 5:00 Referee Herb Dean |
| W | 8–0–0 after bout | Alfred KhashakyanView status and profile → | Dana White's Tuesday Night Contender Series - Season 1, Episode 2 | KO (Punch)Round 1 Time 4:14 Referee Mark Smith |
| W | 7–0–0 after bout | David NuzzoView status and profile → | LFA 11 - Frincu vs. Mendonca | KO (Spinning Wheel Kick)Round 1 Time 2:15 Referee Ryan Brueggeman |
| W | 6–0–0 after bout | Irvin VelozView status and profile → | Extreme Beatdown - Beatdown 20 | KO (Punch)Round 1 Time 2:34 Referee Not listed |
| W | 5–0–0 after bout | Tycen LynnView status and profile → | ICF 26 - The Perfect Storm | KO (Head Kick)Round 2 Time 2:57 Referee Leo Bercier |
| W | 4–0–0 after bout | Mark CoatesView status and profile → | Intense Championship Fighting - Fight Night | Decision (Unanimous)Round 3 Time 5:00 Referee Dennis Bain |
| W | 3–0–0 after bout | Omar AvelarView status and profile → | ICF - Intense Championship Fighting 20 | Submission (Rear-Naked Choke)Round 1 Time 2:55 Referee Terrill Bracken |
| W | 2–0–0 after bout | Shane SargentView status and profile → | ICF - Small Town Throwdown | KO (Punch)Round 1 Time 2:03 Referee Terrill Bracken |
| W | 1–0–0 after bout | Josh ReyesView status and profile → | ICF - Intense Championship Fighting 17 | TKO (Punches)Round 1 Time 1:33 Referee Dennis Bain |
Fight Atlas republishes factual bout results, not source articles or photography. Belt markers appear only when championship status is confirmed by an official promotion source; unverified bouts are never inferred. The matched source name for this profile is Sean O'Malley.
Verify source record ↗HOW SEAN O’MALLEY FIGHTS
O’Malley uses length, stance switches and sharp counter timing to land clean shots at range. Opponents aim to crowd his kicking space and force exchanges before he can establish rhythm.
What these rates mean
SLpM is significant strikes landed per minute. SApM is significant strikes absorbed per minute. Accuracy divides significant strikes landed by attempted; defense measures the percentage of opponents’ significant strike attempts that do not land.
Source and correction standard
Professional record and UFC career statistics link directly to UFCStats. Division status comes from the official UFC rankings. A recent bout can temporarily create differences between sources, so the verification date is shown rather than presenting the data as permanently current.