Martina Navratilova

If Martina Navratilova isn't at the top of your 'Greatest Female Tennis Players of All Time' list, are you even a tennis fan? I mean, come on, her game was a mix of bulldozer power and ballerina grace. And let’s not forget the cultural shockwave of her coming out in the '80s. Every match felt like your favorite drama series. Fans still lose sleep debating her forehand versus Serena's. She turned tennis debates into a full-contact sport!