| 2011-01-01 | UFC 125: Resolution | Lightweight | Jeremy Stephens def. Marcus Davis | KO (punch) | 3 | 2:33 |
| 2010-08-28 | UFC 118: Edgar vs. Penn 2 | Welterweight | Nate Diaz def. Marcus Davis | Technical Submission (guillotine choke) | 3 | 4:02 |
| 2010-05-08 | UFC 113: Machida vs. Shogun 2 | Welterweight | Marcus Davis def. Jonathan Goulet | TKO (punches) | 2 | 1:23 |
| 2009-11-21 | UFC 106: Ortiz vs. Griffin 2 | Welterweight | Ben Saunders def. Marcus Davis | KO (knees) | 1 | 3:24 |
| 2009-06-13 | UFC 99: The Comeback | Welterweight | Dan Hardy def. Marcus Davis | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2009-01-17 | UFC 93: Franklin vs. Henderson | Welterweight | Marcus Davis def. Chris Lytle | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2008-10-18 | UFC 89: Bisping vs. Leben | Welterweight | Marcus Davis def. Paul Kelly | Submission (guillotine choke) | 2 | 2:16 |
| 2008-06-07 | UFC 85: Bedlam | Welterweight | Mike Swick def. Marcus Davis | Decision (unanimous) (29–27, 29–27, 29–27) | 3 | 5:00 |
| 2008-01-19 | UFC 80: Rapid Fire | Welterweight | Marcus Davis def. Jess Liaudin | KO (punch) | 1 | 1:04 |
| 2007-09-08 | UFC 75: Champion vs. Champion | Welterweight | Marcus Davis def. Paul Taylor | Submission (armbar) | 1 | 4:14 |
| 2007-06-16 | UFC 72: Victory | Welterweight | Marcus Davis def. Jason Tan | KO (punch) | 1 | 1:15 |
| 2007-04-07 | UFC 69: Shootout | Welterweight | Marcus Davis def. Pete Spratt | Submission (ankle lock) | 2 | 2:57 |
| 2006-12-13 | UFC Fight Night: Sanchez vs. Riggs | Welterweight | Marcus Davis def. Shonie Carter | Decision (unanimous) (30–26, 29–28, 30–27) | 3 | 5:00 |
| 2006-10-10 | UFC Fight Night 6.5 | Welterweight | Marcus Davis def. Forrest Petz | Submission (guillotine choke) | 1 | 4:58 |
| 2005-11-05 | The Ultimate Fighter: Team Hughes vs. Team Franklin Finale | Welterweight | Melvin Guillard def. Marcus Davis | TKO (doctor stoppage) | 2 | 2:55 |