What's the best jersey number of all time? Is it number seven, worn by Mickey Mantle and John Elway? Or is it number 23 worn by Michael Jordan and LeBron James? How about number four worn by Lou Gehrig and Bobby Orr? Number 33 could also be in consideration, worn by Larry Bird, Tony Dorsett and Kareem. And don't count out number three worn by babe Ruth, Allen Iversen, and Bronko Nagurski. But who would you pick? And what criteria would you use?