'Rex is walking out of town with his tail between his legs, having never backed up any of his big talk. The Bills won just 15 of the 31 games he coached; they tacked on two more years to their postseason drought; their defense got much worse as the players never bought into, nor understood, Ryan’s complex scheme; and while no one ever questioned the work ethic of Ryan or his players, it was clear the Bills were not a well-prepared team, and they were often an out-coached team on game days.'