5. Mike Gundy - Oklahoma State Cowboys
Mike Gundy was a member of Les Miles's staff in Stillwater, serving as the Associate Head Coach and Offensive Coordinator from 2001 to 2004. When Miles left for the LSU head coaching position, the Oklahoma State Cowboys promoted Gundy to the head coach position, a title he still holds today. Gundy has won 156 games, the National Coach of the Year award (2011), and has a 67.5 winning percentage. Gundy is by far the winningest coach in Oklahoma State history.