| Pro Record: | 10-3-0 (Win-Loss-Draw) |
| Team: | Power MMA Team |
| Age: | 37 |
| Sex: | Male |
| Height: | 6 Feet. 0 Inch(es). |
| Weight: | 185 lbs. |
| Out of: | Phoenix, AZ |
| Born: | Gunnison, CO |
Aaron Simpson's Professional Record
| Date | Result | Opponent | Event | Method | Round | Time | ||
|---|---|---|---|---|---|---|---|---|
| 02/15/2012 | Loss | Rony Markes da Silva | UFC on Fuel: Sanchez vs. Ellenberger | Decision Split Decision | 3 | |||
| 10/08/2011 | Win | Eric Schafer | UFC 136 Edgar vs Maynard III | Decision Unanimous Decision | 3 | |||
| 07/02/2011 | Win | Bradley Tavares | UFC 132: Cruz vs.Faber | Decision Unanimous Decision | 3 | |||
| 03/26/2011 | Win | Mario Miranda | UFC Fight Night 24 | Decision Unanimous Decision | 3 | |||
| 11/20/2010 | Loss | Mark Munoz | UFC 123: Jackson vs. Machida | Decision Unanimous Decision | 3 | |||
| 06/19/2010 | Loss | Chris Leben | The Ultimate Fighter: Team Liddell vs. Team Ortiz Finale | TKO/RSC Referee Stoppage from Strikes | 2 | 4:17 | ||
| 01/11/2010 | Win | Tom Lawlor | UFC Fight Night: Maynard vs Diaz | Decision Split Decision | 3 | |||
| 08/29/2009 | Win | Edward Herman | UFC 102: Couture vs. Nogueira | TKO/RSC Injury | 2 | 0:17 | ||
| 04/01/2009 | Win | Tim McKenzie | UFC Fight Night: Condit vs Kampmann | TKO/RSC Referee Stoppage from Strikes | 1 | 1:40 | ||
| 11/05/2008 | Win | David Avellan | WEC 36: Faber vs. Brown | KO Strike | 1 | 0:18 | ||
| NSF | 05/31/2008 | Win | Travis Degraw | FMF 2 - Full Moon Fighting 2 | TKO/RSC | 3 | 3:22 | |
| 02/01/2008 | Win | Scott Dingman | Bodog Fight: Las Vegas | TKO/RSC | 1 | 2:40 | ||
| NSF | 04/16/2000 | Win | Billy Onlewski | Arizona Cage Combat 04/16/2000 | Submission Rear Naked Choke | 1 | 4:02 |
| Bout results verified by an official State, Tribal, Provincial, or Municipal Commission. | |
| NSF: | Non Sanctioned Fight |
| * : | For a variety of reasons, including weight disparity and the demands of entertainment, Exhibition Bouts are held, in which the contest is unscripted and hard fought, but the results do not count on a fighter's Official Record. |
| NC: | Fight Declared No Contest |


