NASHVILLE, Tenn. – On Saturday and Sunday, a Final Four happened here. Not Final Four. That’s slotted for three weeks from now in a city a thousand miles southwest. But you might’ve been forgiven for believing it was the real thing: a quartet of men’s college basketball teams, all among the country’s top six programs by almost every measure, all with legitimate aspirations for a national championship, converging in one spot to play a couple games.