Even more lightweight action will be taking place at UFC On Fox VIII as Aaron Riley will be facing Justin Salas. Riley will be returning to the cage after an almost two year layoff, last competing at UFC 135 in a losing effort to Tony Ferguson. Salas has split both of his UFC bouts, defeating Anton Kuivanen and suffering a defeat to Tim Means. UFC On Fox VIII takes place on July 27th from the Key Arena in Seattle, Washington with Demetrious Johnson and John Moraga headlining.