From the Forbes list:
1. Maria Sharapova – tennis, $25 million
2. Caroline Wozniacki – tennis $12.5 million
3. Danica Patrick – Nascar $12 million
4. Venus Williams – tennis $11.5 million
5. Kim Clijsters – tennis $11 million
6. Serena Williams – tennis $10.5 million
7. Kim Yu-na – figure skating $10 million
8. Li Na – tennis $8 million
9. Ana Ivanovic – tennis $6 million
10. Paula Creamer – golf $5.5 million