John Beilein is suddenly out as head coach of the Cleveland Cavaliers just 54 games into a five-year contract. Beilein is one of the older rookie NBA head coaches we’ve seen in the modern era, having spent 40 years coaching college hoops. Why Beilein decided to take the plunge into the NBA — and not just into the NBA, but into the Cleveland Cavaliers — remains somewhat of a mystery. A new challenge? Proving his style of leadership and basketball crosses boundaries? Money?