Career
A winger, he played for Bridgend, Celtic Warriors, Ospreys and the Cardiff Blues. In July 2007 he joined Newport Gwent Dragons on a one season loan from the Ospreys, making 20 appearances and scoring 15 points for the Dragons. After returning from his loan deal at the Dragons he moved to Cardiff in 2008.
Mustoe retired in December 2012 due to a pelvic injury sustained whilst playing for the Cardiff Blues against Treviso
Mustoe was a Wales sevens international member.