Bobby Knight.

An abusive, tyrannical, psychopath of a college basketball coach... who only got away with all the shit he did as long as he did it because he WON. College hoops are big in Indiana... so the university brass conveniently looked away when he physically abused players, threw chairs across the court, had embarrassing meltdowns on the sidelines, and... behaved like a complete fucking idiot when he came down to P.R., assaulted a police officer, and pretty much insulted the crowd at a game. He later apologized for that... but he finally wore out his welcome at Indiana U. and got canned.