| 2011-12-10 | UFC 140: Jones vs. Machida | Catchweight | Dennis Hallman def. John Makdessi | Submission (rear-naked choke) | 1 | 2:58 |
| 2011-08-06 | UFC 133: Evans vs. Ortiz | Welterweight | Brian Ebersole def. Dennis Hallman | TKO (elbows) | 1 | 4:28 |
| 2010-11-20 | UFC 123: Rampage vs. Machida | Welterweight | Dennis Hallman def. Karo Parisyan | TKO (punches) | 1 | 1:47 |
| 2010-08-07 | UFC 117: Silva vs. Sonnen | Welterweight | Dennis Hallman def. Ben Saunders | Decision (unanimous) (29–28, 30–27, 29–28) | 3 | 5:00 |
| 2009-12-05 | The Ultimate Fighter: Heavyweights Finale | Welterweight | John Howard def. Dennis Hallman | KO (punches) | 3 | 4:55 |
| 2005-10-07 | UFC 55: Fury | Middleweight | Jorge Rivera def. Dennis Hallman | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2004-06-19 | UFC 48: Payback | Welterweight | Frank Trigg def. Dennis Hallman | TKO (punches) | 1 | 4:15 |
| 2001-09-28 | UFC 33: Victory in Vegas | Lightweight | Jens Pulver def. Dennis Hallman title | Decision (unanimous) (49–47, 48–47, 48–47) | 5 | 5:00 |
| 2000-12-16 | UFC 29: Defense of the Belts | Welterweight | Dennis Hallman def. Matt Hughes | Submission (armbar) | 1 | 0:20 |