Why is Serena Williams an absolute BEAST, and by far the best woman player ever!

What do you think?

Here's one reason.  It's the coach that took her from a scrappy kid from Compton with shoddy technique to a technically sound master of the game.

Here's an interview I did with Rick Macci, her coach from '91-'95.

http://www.osatennis360.com/serena-williams-coach/