They say you can't teach speed.
And it's true. People are either born fast, slow or somewhere in between. Sure, you can help a fast runner get faster, but at the end of the day, if a person can run really fast, it didn't happen because of practice. People with elite speed come out of the womb with the legs of a jackrabbit.
Cincinnati Reds' center fielder Billy Hamilton is one of those guys -- always has been. In the minors, he stole more than 100 bases a season. In his first few years in the big leagues, he routinely swiped more than 50 bags every year, and this year, he continues to do more of the same.