Naomi Osaka has been a Grand Slam champion and No 1 in the WTA rankings — and now she’s No. 1 on another list: top-earning female athlete. According to a story posted on Forbes.com on Friday, the 22-year-old player earned $37.4 million over the past 12 months from endorsements and prize money, eclipsing Serena Williams in that span. Forbes said Osaka’s total is a one-year record for a female athlete, topping the previous mark of $29.7 million set by Maria Sharapova in 2015. Osaka is No. 29 overall, with Williams at No. 33, on Forbes’ annual list of the 100 top-earning athletes.