Naomi Osaka Named the Secondbr Highest-Paid Female Athlete .br According to ‘Forbes,’ Naomi Osaka earnedbr a total of $24.3 million over the last year.br Osaka was only out-earned by fellow tennisbr veteran Serena Williams, who pulled in $29.2 million, .br making her the world’sbr highest-paid female athletebr for the fourth year in a row. .br An estimated $16 million of Osaka’s earnings camebr from endorsements with MasterCard, Nissan,br Procter & Gamble and All Nippon Airways.br The remaining $8.3 million came from her winbr over Williams in the 2018 U.S. Open championship, .br as well as her victory over Petra Kvitovábr in the Australian Open championship in 2019. .br Both Osaka and Williams earned more than twicebr as much as Angelique Kerber, the third-highest-paidbr female athlete, who pulled in $11.8 million. .