Aaron Riley (born December 9, 1980) is a retired American mixed martial artist who most recently competed in the Lightweight division of the Ultimate Fighting Championship.
Aside from mixed martial arts, Riley has also competed in boxing (becoming a Golden Gloves champion) and wrestling.
Growing up, he watched the UFC since its first event in 1993, and fell in love with the sport of mixed martial arts.
Riley then lost two consecutive fights against future UFC veterans Yves Edwards and Falaniko Vitale.
His first fight was in Costa Rica, which he won via armbar and then fought against future Bellator Lightweight Champion Eddie Alvarez, but lost via knockout.
Riley next faced TUF 8 cast member Shane Nelson at UFC 96, losing via controversial first round TKO.
[6] Riley had previously suffered a broken jaw when he fought Spencer Fisher at UFC Fight Night 3.