Japan's tennis sensation 22-year-old Naomi Osaka has now become the highest-grossing female player in the world. According to Forbes, he has earned $ 344 million in the last 12 months.
The two-time Grand Slam champion, the Asian star, has surpassed her American rival, Serena Williams, in this case. Serena earned $ 1.4 million less than Osaka in prize money and advertising in the past year. However, both of them broke Maria Sharapova's previous record of the highest earning in a year. Sharapova, who recently retired, earned $ 299 million in 2015.