 At BYU's first-ever Media Day, Mendenhall announced that he had signed a three-year contract extension that would take him through the 2013 season but hinted that coaching BYU may not be his football calling forever.According to Mendenhall, "BYU wanted to make it longer term than that.I want to be worthy of the position I have and I'm going to give it everything I have for those three (years).