BJ Penn
1–9–1 · Lightweight · Age 47 · 11 UFC fights
Skill (today)
-3.23
Uncertainty (σ)
1.67
As of
2026-09-13
Skill trajectory
Line: estimated skill after each fight. Band: ±1σ uncertainty.
Fight ledger
| Date | Opponent | Result | Method | Event | Model P(win), pre-fight |
|---|---|---|---|---|---|
| 2019-05-11 | Clay Guida | Loss | U-DEC | UFC 237: Namajunas vs. Andrade | 11% |
| 2018-12-29 | Ryan Hall | Loss | SUB | UFC 232: Jones vs. Gustafsson 2 | 10% |
| 2017-06-25 | Dennis Siver | Loss | M-DEC | UFC Fight Night 112 | 11% |
| 2017-01-15 | Yair Rodriguez | Loss | KO/TKO | UFC Fight Night 103 | 10% |
| 2014-07-06 | Frankie Edgar | Loss | KO/TKO | The Ultimate Fighter 19 Finale | 12% |
| 2012-12-08 | Rory MacDonald | Loss | U-DEC | UFC on FOX 5 | 13% |
| 2011-10-29 | Nick Diaz | Loss | U-DEC | UFC 137: Penn vs. Diaz | |
| 2011-02-26 | Jon Fitch | Draw | M-DEC | UFC 127: Penn vs Fitch | |
| 2010-11-20 | Matt Hughes | Win | KO/TKO | UFC 123: Rampage vs. Machida | 23% |
| 2010-08-28 | Frankie Edgar | Loss | U-DEC | UFC 118: Edgar vs. Penn 2 | 35% |
| 2010-04-10 | Frankie Edgar | Loss | U-DEC | UFC 112: Invincible |