Naomi Osaka's Grand Slam title wins at the U.S. and Australian Opens have helped catapult the Japanese tennis player up to second, behind Serena Williams, in Forbes' list of the highest-paid female athletes over the last year, Reuters reports.
Williams, a 23-times Grand Slam champion, topped the annual list for a fourth consecutive year with estimated total earnings of US$29.2 million, the business magazine said.
Osaka's total income grew to US$24.3 million, driven mainly by her off-court earnings, soaring to an estimated US$16 million from US$1.5 million a year ago, but the Japanese still missed the cut for Forbes' top 100 best-paid athletes list.
Williams is the only woman making it onto that list, coming in at No. 63.
Forbes said it compiled its list based on prize money, salaries, bonuses, endorsements and appearance fees between June 1 2018 and June 1 this year.
U.S. women's soccer player Alex Morgan is the highest-placed non-tennis player on the women's list at number 12, with Forbes putting her total earnings of US$5.8 million.