Anytime you have large gatherings of people there's always the possibility of some sort of medical condition. You're talking 60,000 at a football game, 15,000 at a basketball game. You're talking about the Lawn where you have 20,000 gathered.
It was a show. He was always ready and eager to play. Wasn't scared of nobody, wasn't scared of no hit. He wanted the ball all the time and when he didn't get it he'd cry. He just wanted to win.