THE COMPLETE RECORD
This profile is part of the recursive Fight Atlas graph. Open any opponent below to load that athlete’s complete professional career, then continue through every linked opponent without returning to a third-party record page.
20Professional wins
8Professional losses
0Draws
0No contests
FULL PROFESSIONAL CAREER
EVERY RECORDED BOUT
Complete professional fight history, including competition before and outside UFC. Use the controls to isolate an opponent, promotion, method or result.
20–8–028 professional boutsNo no-contest results
28 of 28 bouts shown
| Result | Date / record | Opponent | Event | Finish details |
|---|---|---|---|---|
| L | 20–8–0 after bout | Eric HowserView status and profile → | MCC 59 - Howser vs. O'Brien | KO (Punch)Round 1 Time 0:12 Referee Rob Hinds |
| W | 20–7–0 after bout | Jacob VolkmannView status and profile → | PC MMA - Pinnacle Combat 16 | Submission (Guillotine Choke)Round 1 Time 2:14 Referee Not listed |
| W | 19–7–0 after bout | Doug JenkinsView status and profile → | MCC 50 - Thanksgiving Throwdown | Submission (Rear-Naked Choke)Round 1 Time 3:29 Referee Not listed |
| L | 18–7–0 after bout | Drew DoberView status and profile → | VFC - Victory Fighting Championship 40 | Submission (Rear-Naked Choke)Round 2 Time 3:57 Referee Joe Baudler |
| L | 18–6–0 after bout | Gesias CavalcanteView status and profile → | WSOF 1 - Arlovski vs. Cole | Submission (Heel Hook)Round 1 Time 1:03 Referee Steve Mazzagatti |
| W | 18–5–0 after bout | Joe MorrisView status and profile → | MCC 40 - Lund vs. Dicke | Submission (Triangle Choke)Round 1 Time 2:22 Referee Not listed |
| W | 17–5–0 after bout | Allen HernandezView status and profile → | MCC 38 - Hernandez vs. O'Brien | Decision (Split)Round 5 Time 5:00 Referee Not listed |
| L | 16–5–0 after bout | Cole MillerView status and profile → | UFC Live 5 - Hardy vs. Lytle | Submission (Guillotine Choke)Round 2 Time 2:38 Referee Josh Rosenthal |
| L | 16–4–0 after bout | Paul KellyView status and profile → | UFC 123 - Rampage vs. Machida | TKO (Elbows)Round 2 Time 3:16 Referee Dan Miragliotta |
| W | 16–3–0 after bout | Josh HenryView status and profile → | MCC 29 - Champion vs. Champion | Submission (Rear-Naked Choke)Round 1 Time 3:48 Referee Not listed |
| W | 15–3–0 after bout | Dakota CochraneView status and profile → | Extreme Challenge - High Stakes | Submission (Rear-Naked Choke)Round 1 Time 2:00 Referee Not listed |
| W | 14–3–0 after bout | Jake BrownView status and profile → | MCC 24 - Reloaded | Submission (Keylock)Round 1 Time 1:16 Referee Not listed |
| W | 13–3–0 after bout | Rod MontoyaView status and profile → | RCC 10 - Devil's Fights | Submission (Triangle Choke)Round 3 Time 1:33 Referee Not listed |
| W | 12–3–0 after bout | Tim BazerView status and profile → | EC 135 - Extreme Challenge 135 | Submission (Triangle Choke)Round 1 Time 1:31 Referee Not listed |
| W | 11–3–0 after bout | Jeremy CastroView status and profile → | MCC 21 - Mickle vs. Marriott | Submission (Triangle Choke)Round 1 Time 1:28 Referee Not listed |
| L | 10–3–0 after bout | Chris MickleView status and profile → | MCC 18 - O'Brien vs. Mickle | Submission (Armbar)Round 1 Time 4:39 Referee Not listed |
| W | 10–2–0 after bout | Will ShuttView status and profile → | MCC 17 - Thanksgiving Throwdown 1 | Submission (Triangle Choke)Round 2 Time 1:43 Referee Not listed |
| W | 9–2–0 after bout | Josh AtwellView status and profile → | MCC 16 - No Guts, No Glory | Submission (Triangle Choke)Round 1 Time 1:29 Referee Not listed |
| W | 8–2–0 after bout | Chris Perez van DamView status and profile → | MCC 15 - Lights Out! | Submission (Triangle Choke)Round 1 Time 1:13 Referee Not listed |
| W | 7–2–0 after bout | Will ShuttView status and profile → | MCC 13 - Contenders | Submission (Triangle Choke)Round 1 Time 0:50 Referee Not listed |
| W | 6–2–0 after bout | Nick WalkerView status and profile → | MCC 13 - Contenders | Submission (Triangle Choke)Round 1 Time 2:03 Referee Not listed |
| W | 5–2–0 after bout | Jeff CarstensView status and profile → | TFC - Awakening | Submission (Rear-Naked Choke)Round 1 Time 0:57 Referee Not listed |
| W | 4–2–0 after bout | Scott BurnsView status and profile → | ECC - Elite Cage Combat | Submission (Triangle Choke)Round 1 Time 1:22 Referee Not listed |
| L | 3–2–0 after bout | Allen HernandezView status and profile → | Mainstream MMA 7 - Vengeance | Submission (Rear-Naked Choke)Round 1 Time 3:14 Referee Not listed |
| W | 3–1–0 after bout | Adam CunninghamView status and profile → | MCC 9 - Heatwave | Submission (Triangle Choke)Round 1 Time 1:19 Referee Not listed |
| L | 2–1–0 after bout | Erik KochView status and profile → | Mainstream MMA 6 - Evolution | Submission (Armbar)Round 1 Time 0:42 Referee Not listed |
| W | 2–0–0 after bout | Steve YoungView status and profile → | MCC 8 - Motivation | Submission (Triangle Choke)Round 2 Time 1:20 Referee Not listed |
| W | 1–0–0 after bout | Nathan WoodsView status and profile → | GFC 1 - Genesis | Submission (Guillotine Choke)Round 1 Time 0:52 Referee Not listed |
DATA CHECKEDAug 20, 2026
PRIMARY RECORD SOURCESherdog Fight Finder
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 T.J. O'Brien.
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28 professional bout rows are displayed from the source record. 25 unique opponent identities have a stable source ID and an internal Fight Atlas route. Every opponent row has a verified identity link.
Source and correction standard
The complete professional history is retrieved from the established public fight-record source and cached for up to 24 hours. Current-roster status remains separate from historical career data and does not imply retirement.