In the tennis world, both Li Na and Maria Sharapova are undoubtedly on the list of the world's richest female athletes. Sharapova made a name for herself after she opened her grand slam account as a 17-year-old at Wimbledon, while Li became a global star when she in 2011 won the French Open at the age of 29. Whatever it was, on-court or off-court, the battles between them draw wide public attention. And what's more interesting is that they share one agent, Max Eisenbud, who represents both players and makes money for both of them in the business world.