Also, note that although the odds of "going pro" are listed for baseball, basketball, and football..they mean quite different things. As far as I know, going pro in football means you are in the NFL, CFL, or arena league.
Going pro in basketball means you could be playing for any number of leagues across the world that pay good money
Going pro in baseball is almost meaningless. It means you could be playing independent ball in the Northern league...or rookie league...and never advance anywhere near the show.