What happened: Michigan State psychiatrist Lionel Rosen played a pivotal role in shaping the career of former college football coach Nick Saban. Rosen collaborated with the coach to refine his approach during his tenure in East Lansing.

Why it matters: Rosen helped Saban develop the disciplined, step-by-step philosophy that became the foundation of his program building. Saban implemented those psychological principles to manage high-pressure situations throughout his career.

What to watch: The relationship is documented in the 'Saban' series available on the ESPN App.