Not everyone is cut out to be a legend in their sport. Roger, Rafa, Novak, Serena have trillions of dollars and could retire anytime they wanted to. They're chasing more than just money. Ever since the WTA matched ATP prize money, it's never been easier for a solid female athlete to make millions. It's rather amazing to see professional female basketball and volleyball players waste their time in sports that pay nothing when they could be playing pro tennis and own the field and make millions. If you're an American with a tall daughter that is athletic and putting them into another sport but tennis, WTF are you even thinking?