| Aaron Simpson | |
|---|---|
| Born | July 20, 1974 Gunnison, Colorado, United States |
| Other names | A-Train |
| Height | 6 ft 0 in (1.83 m) |
| Weight | 171 lb (78 kg; 12.2 st) |
| Division | Middleweight Welterweight |
| Reach | 73 in (190 cm) |
| Stance | Orthodox |
| Fighting out of | Phoenix, Arizona, United States |
| Team | Power MMA Team |
| Rank | Purple belt in Brazilian Jiu-Jitsu under Paul Nava: Ares AZ BJJ Association |
| Wrestling | NCAA Division I Wrestling |
| Years active | 2000; 2007-2013 |
| Mixed martial arts record | |
| Total | 17 |
| Wins | 12 |
| By knockout | 6 |
| By submission | 1 |
| By decision | 5 |
| Losses | 5 |
| By knockout | 3 |
| By decision | 2 |
| Other information | |
| University | Arizona State University |
| Notable school(s) | Antelope Union High School |
| Mixed martial arts record from Sherdog | |
Aaron Michael Simpson (born July 20, 1974) is an American mixed martial artist. A professional competitor from 2000 until 2013, he is perhaps best known for his 11-fight stint with the UFC, but also fought for the pre-Zuffa owned WEC and the World Series of Fighting.