| Gender | Male |
|---|---|
| Height | 0' 0" |
| Weight Class | Bantamweight |
| Out of | VT |
John O'Brien is a MMA fighter with a amateur fight record of 0 wins, 3 losses and 0 draws
| Amateur Record: | 0-3-0 (Win-Loss-Draw) |
|---|---|
| Career Length | 2 months, 2 days |
| Rounds Fought | 1.6 |
| Avg. Fights/Year | 18.0 |
| Longest Layoff | 1 month, 11 days |
| Quickest Turnaround | 3 weeks |
| Date | Opponent | Weightclass | Method | Round | Time | |||
|---|---|---|---|---|---|---|---|---|
| NSF | 12/15/2012 | L (0-2-0) | Jeremy Yerdon (0-0-0) | BW (135.0 vs. 135.0) | TKO/RSC Xtreme Combat Promotions: War in Whitehall 1 | 2 | 00:42 | |
| NSF | 11/24/2012 | L (0-1-0) | Michael Smith (0-0-0) | BW (135.0 vs. 135.0) | Submission (Arm Bar) Anarchy 2: Seasons Beatings | 1 | 00:35 | |
| NSF | 10/13/2012 | L (0-0-0) | The Finisher (2-2-0) | BW (135.0 vs. 135.0) | TKO/RSC (Referee Stoppage) Rumble in Rutland | 1 | 00:36 |
| * Bouts marked with an 'Official' logo denote results which have been verified by an ABC-recognized athletic commission * Bouts marked with an (*) are considered exhibition bouts and do not count towards the fighter's record * Weights marked with an (*) denote those over the limit for the weight class |