The most exciting sporting event I’ve ever watched was not a Super Bowl. It wasn’t a World Series seventh game. It had nothing to do with the World Cup. It wasn’t the Big Ten Network’s six-hour salute to Ohio State - “BTN Hearts Them Buckeyes!” It wasn’t that hot day in Peoria when Joey Chestnut ate 14 live goats in 27 minutes. No, the greatest, most thrilling event I ever saw - and arguably the biggest upset - occurred 30 years ago this week: the world heavyweight championship fight between Iron Mike Tyson and journeyman Buster Douglas on Feb. 11, 1990.