6 Andre Agassi
Andre Agassi is a retired American tennis player who was formerly World No.1. His net worth is $175 million.
In 1986, he became a professional and in two years had earned more than $2,000,000 dollars.
His success was not limited to that one year. He was also the only male tennis player ever to win a Career Golden Slam.
Agassi established a charity foundation in Nevada for children at-risk and paid for a K-12 school of character education.
Agassi was plagued by back problems. He officially retired in 2006
5 Serena Williams
Fifth place is no surprise to a lady!
Serena Williams is one of the greatest female tennis players ever.
The 18-time Grand Slam champion was ranked world number one five times and has also won gold medals at the London and Sydney Olympics.
Her endorsement deals and sponsorships average $10-20 million annually. She is also the highest-earning female tennis star in history.