13. LeBron James
Say what you will about LeBron James the dude knows how to market himself. What other sports player do you know thats had a television special about what team hes going to join? At any rate, with all of that marketing acumen and those skills on the court, King James has managed to amass a pretty hefty fortune. Currently, its valued at just under a quarter of a billion dollars. Will he break the billion mark before he retires?