Jake O'Brien
- Height
- 6'3"
- Reach
- 76"
- Weight
- 205 lb
- Stance
- Orthodox
- Born
- Tue, Sep 25, 1984, age 41
- First UFC fight
- Thu, Aug 17, 2006
- Latest UFC fight
- Sat, Jul 11, 2009
01/How he wins
1 KO/TKO (punches to head on ground), 3 decisions in 4 wins
| How the fight ended | His wins | His losses |
|---|---|---|
| KO/TKO | 1 | 2 |
| Submission | 0 | 1 |
| Decision | 3 | 0 |
| All | 4 | 3 |
02/Career rates
03/By division
| Fights | Record | Min | Sig strikes | Per min | Takedowns | Control | KD | Finishes in wins | |
|---|---|---|---|---|---|---|---|---|---|
| Heavyweight | 5 | 3-2-0 | 47.2 | 56 of 137 | 1.19 | 21 of 38 | 29:44 of 47:11 | 0 | 1 in 3 |
| Light Heavyweight | 2 | 1-1-0 | 22.7 | 36 of 152 | 1.58 | 9 of 15 | 5:18 of 22:43 | 1 | 0 in 1 |
| All | 7 | 4-3-0 | 69.9 | 92 of 289 | 1.32 | 30 of 53 | 35:02 of 69:54 | 1 | 1 in 4 |
04/By year
| Fights | Record | Min | Sig strikes | Per min | Takedowns | Control | KD | Finishes in wins | |
|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2 | 1-1-0 | 22.7 | 36 of 152 | 1.58 | 9 of 15 | 5:18 of 22:43 | 1 | 0 in 1 |
| 2008 | 2 | 0-2-0 | 11.3 | 5 of 13 | 0.44 | 2 of 14 | 4:44 of 11:19 | 0 | 0 in 0 |
| 2007 | 1 | 1-0-0 | 15.0 | 13 of 41 | 0.87 | 6 of 8 | 9:55 of 15:00 | 0 | 0 in 1 |
| 2006 | 2 | 2-0-0 | 20.9 | 38 of 83 | 1.82 | 13 of 16 | 15:05 of 20:52 | 0 | 1 in 2 |
| All | 7 | 4-3-0 | 69.9 | 92 of 289 | 1.32 | 30 of 53 | 35:02 of 69:54 | 1 | 1 in 4 |
A career line lumps every year together, and a fighter’s 2014 does not describe his 2026. Each year here is the same count over that year’s fights alone, with its own minutes, so it can be read against the career line beneath it.
05/By round
| Fights reached | Min in it | Sig strikes | Per min | Takedowns | Control | KD | Sub att | Ended here | |
|---|---|---|---|---|---|---|---|---|---|
| Round 1 | 7 of 7 | 32.0 | 44 of 139 | 1.37 | 10 of 21 | 17:02 of 32:02 | 1 | 0 | 1, won 0 |
| Round 2 | 6 of 7 | 22.9 | 40 of 117 | 1.75 | 10 of 19 | 9:42 of 22:52 | 0 | 0 | 3, won 1 |
| Round 3 | 3 of 7 | 15.0 | 8 of 33 | 0.53 | 10 of 13 | 8:18 of 15:00 | 0 | 1 | 3, won 3 |
Round length is read from each fight’s round format, so a 12-minute opening round from 1995 counts its twelve minutes. A round is counted only for the fights that reached it; the first column is the denominator for the rest of the row.
06/Fight log
| Date | Opponent | Result | Sig strikes | Takedowns | Control | KD | Time | |
|---|---|---|---|---|---|---|---|---|
| Sat, Jul 11, 2009UFC 100 | Jon JonesLight Heavyweight | LSubmission, R2 2:43Guillotine Choke Standing | 11 of 68 | 0 of 4 | 0:03 | 0 | 7:43 | Rounds |
| Sat, Jan 31, 2009UFC 94: St-Pierre vs Penn 2 | Christian WellischLight Heavyweight | WSplit decision, R3 5:00Marcos Rosales 29 - 28. Cecil Peoples 28 - 29. Nelson Hamilton 28 - 29. | 25 of 84 | 9 of 11 | 5:15 | 1 | 15:00 | Rounds |
| Sat, Jul 19, 2008UFC: Silva vs Irvin | Cain VelasquezHeavyweight | LKO/TKO, R1 2:02Punches to Head From Side Control | 1 of 1 | 0 of 0 | 0:00 | 0 | 2:02 | Rounds |
| Sat, Mar 1, 2008UFC 82: Pride of a Champion | Andrei ArlovskiHeavyweight | LKO/TKO, R2 4:17Punches to Head From Mount | 4 of 12 | 2 of 14 | 4:44 | 0 | 9:17 | Rounds |
| Thu, Jan 25, 2007UFC Fight Night: Evans vs Salmon | Heath HerringHeavyweight | WUnanimous decision, R3 5:00Jeff Mullen 27 - 30. Tim Vannatta 28 - 29. Peter Trematerra 27 - 30. | 13 of 41 | 6 of 8 | 9:55 | 0 | 15:00 | Rounds |
| Sat, Nov 18, 2006UFC 65: Bad Intentions | Josh ShockmanHeavyweight | WUnanimous decision, R3 5:00Alejandro Rochin 27 - 30. Hector Hernandez 27 - 30. Marcos Rosales 27 - 30. | 13 of 31 | 10 of 13 | 10:22 | 0 | 15:00 | Rounds |
| Thu, Aug 17, 2006UFC Fight Night 6 | Kristof MidouxHeavyweight | WKO/TKO, R2 0:52Punches to Head On Ground | 25 of 52 | 3 of 3 | 4:43 | 0 | 5:52 | Rounds |
UFC bouts only, counted from the fight rows; the promotion’s listed pro record above covers every promotion and is a different denominator. Volume is per minute of cage time and accuracy per attempt; how he finishes is counted in his wins, the one place a fight is the unit. Significant strikes only. Control time the source did not record is absent, never 0:00.