(Photo credit: William Purnell-Imagn Images)Oklahoma State fired head coach Mike Gundy after 21 seasons. Gundy, who is owed $15 million, is the winningest coach in Oklahoma State history. Gundy posted eight 10-win seasons as a coach at Oklahoma State, which finished ranked in the top 15 five times during his tenure. He was 170-90 all-time, including 12-6 in bowls at his alma mater, where he was OSU's starting quarterback and assistant head coach before being hired. Oklahoma State will host Baylor (2-2, 0-1 Big 12) in its conference opener on Saturday.