Naomi Osaka is the world’s highest-earning female athlete. The Japanese tennis player appeared in Forbes Magazine’s ranking this past Thursday, earning $57.3 million in prize money and endorsements over the course of the past year.Naomi Osaka acknowledges young fan after winning her first 2021 US Open matchNaomi Osaka’s dream car is the girliest, most glamorous, and magical ride everA post shared by 大坂なおみ (@naomiosaka)The Forbes list showed that the top-earning female athletes were all tennis players, with Osaka occupying first place by a significant margin, followed by Serena and Venus Williams in second and third place, earning $45.9 million and $11.3 million, respectively.