The roster
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Jake O'Brien
“Irish”
USHeavyweightActiveage 41
15 — 4
79% win rate
L1 streak
Peak Vertex
2007-01-2523-13 vs current
AfterWvs Heath Herring · U-Dec
EndedLvs Andrei Arlovski · KO · 2008-03-01 · score → 17
Career timeline
Each dot is a fight — green wins, red losses, larger dots are title fights. Hover for details, click to open the bout.
4 wins3 losseslast 5: L W L L Wdrag to scroll · 1993–2026
Key stats
Six attributes derived from striking, grappling, and finishing rates.
Striking heatmap
Significant strikes by target zone, aggregated across all UFC rounds.
Strikes landed
- Head8997%
- Body33%
- Legs00%
Strikes absorbed
Round-by-round averages
Average values per round across the selected fights — toggle metrics below.
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Metrics
| Metric | R1(7) | R2(6) | R3(3) | R4 | R5 |
|---|---|---|---|---|---|
| Sig Str landed | 6.5 | 20.7 | 2.7 | — | — |
| Sig Str absorbed | 13.4 | 8.9 | 10.3 | — | — |
| Takedowns landed | 1.43 | 2.49 | 3.33 | — | — |
| Takedowns absorbed | 0.35 | 0.36 | 0.00 | — | — |
| Control time | 2:26 | 2:16 | 2:46 | — | — |
Fight history
Career UFC bouts in reverse chronological order.
- UFC 1002009-07-11L·Sub·R2 · 2:43
- UFC 94: St-Pierre vs Penn 22009-01-31W·S-Dec·R3 · 5:00
- UFC: Silva vs Irvin2008-07-19L·KO·R1 · 2:02
- UFC 82: Pride of a Champion2008-03-01L·KO·R2 · 4:17
- UFC Fight Night: Evans vs Salmon2007-01-25W·U-Dec·R3 · 5:00
- UFC 65: Bad Intentions2006-11-18W·U-Dec·R3 · 5:00
- UFC Fight Night 62006-08-17W·KO·R2 · 0:52
Similar fighters
Closest stylistic matches by inverse-Euclidean similarity over striking and grappling rates.
