Chicago Bears head coach John Fox is a proven winner.
I already know what some of you are thinking, 'But he has yet to win the big one!' Sure, but winning a championship in any sport is a pretty exclusive club. Fox has lead two different teams to the Super Bowl, which is another pretty exclusive club. In seven of his 14 years as a head coach, he's had his team in the playoffs, that's not too shabby. Jake Delhomme, Tim Tebow and Peyton Manning have been his offensive trigger-men on his playoff teams.
Fox is knocked at times because of his conservative approach, but he's a defensive guy, and many defensive guys coach with that philosophy because it's simply in their coaching DNA.