| 2015-09-27 | UFC Fight Night: Barnett vs. Nelson | Bantamweight | Takeya Mizugaki def. George Roop | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2014-07-05 | UFC 175: Weidman vs. Machida | Bantamweight | Rob Font def. George Roop | KO (punch) | 1 | 2:19 |
| 2014-04-16 | The Ultimate Fighter Nations Finale: Bisping vs. Kennedy | Bantamweight | George Roop def. Dustin Kimura | Decision (unanimous) (29–28, 30–27, 29–26) | 3 | 5:00 |
| 2013-11-06 | UFC: Fight for the Troops 3 | Bantamweight | Francisco Rivera def. George Roop | TKO (punches) | 2 | 2:20 |
| 2013-05-25 | UFC 160: Velasquez vs. Bigfoot 2 | Bantamweight | George Roop def. Brian Bowles | TKO (punches) | 2 | 1:43 |
| 2013-03-16 | UFC 158: St-Pierre vs. Diaz | Bantamweight | George Roop def. Reuben Duran | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2012-01-28 | UFC on Fox: Evans vs. Davis | Featherweight | Cub Swanson def. George Roop | TKO (punches) | 2 | 2:22 |
| 2011-10-29 | UFC 137: Penn vs. Diaz | Featherweight | Hatsu Hioki def. George Roop | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2011-06-04 | The Ultimate Fighter: Team Lesnar vs. Team dos Santos Finale | Featherweight | George Roop def. Josh Grispi | TKO (body punch) | 3 | 3:14 |
| 2011-01-22 | UFC: Fight for the Troops 2 | Featherweight | Mark Hominick def. George Roop | TKO (punches) | 1 | 1:28 |
| 2009-08-08 | UFC 101: Declaration | Lightweight | George Sotiropoulos def. George Roop | Submission (kimura) | 2 | 1:59 |
| 2009-05-23 | UFC 98: Evans vs. Machida | Lightweight | George Roop def. Dave Kaplan | Decision (split) (28–29, 30–27, 30–27) | 3 | 5:00 |
| 2008-12-13 | The Ultimate Fighter: Team Nogueira vs. Team Mir Finale | Lightweight | Shane Nelson def. George Roop | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |