Jim Harbaugh and Pete Carroll are two of the most accomplished coaches of their era. Both are quirky culture setters who have become defined by rebuilding teams into championship contenders at the college and pro levels.
In many ways, these two approach the job similarly, and unlike most of their peers.
Carroll, 74, often wears a long-sleeved Dri-FIT shirt, sweats and sneakers at practice, even now as the coach of the Las Vegas Raiders in triple-digit heat. He joins practices, sometimes catching or throwing a pass, while running around and energizing players, some of whom are more than 50 years younger than their coach.