Who is the top ranked tennis player?

The highest earning tennis pros currently are:

1. Roger Federer - $35 million
2. Maria Sharapova - $26 million
3. Rafael Nadal - $18 million
4. Andy Roddick - $15 million
5. Venus Williams - $15 million
6. Serena Williams - $15 million
7. Justine Henin - $10 million
8. Novak Djokovic - $9.5 million
9. Ana Ivanovic - $8 million
10. James Blake - $7.5 million