Naomi Osaka and Serena Williams top as tennis dominates rich list
US Open 2018 champion Naomi Osaka of Japan & runner-up Serena Williams of USA get emotional during trophy ceremony at USTA Billie Jean King National Tennis Center – New York, NY – September 8, 2018 (Shutterstock) By BBC Japan’s Naomi Osaka tops the list with earnings of $37.4m (£26.3m), ahead of Serena Williams with $36m […]