As I recall, there's a story about a college mathematics professor who was flipping a coin in his class to demonstrate the fact that the Gambler's Fallacy didn't hold water. On one of the flips, the quarter landed on his desk and stood on edge. The chances of this happening are very real, but are negligible under most circumstances. But considering the number of coins that have been flipped over the years, it's not unreasonable to expect that this would happen on occasion.
Likewise, if it's possible for a bat to stand on end, then it's really not unreasonable to expect that as some point, given the millions of times a batter has tossed a bat aside, once or twice something like this would happen sooner or later.
