The top 11 highest-earning female sport athletes over the past year are all tennis players.
Serena Williams, 37, a 23-time Grand Slam winner, tops the rich list, after earning $29.2m (£24.3m), including $25m (£20.57m) in endorsements, according to Forbes.
Japan's Naomi Osaka, who beat Williams in the US Open final, is second.
US World Cup-winning striker Alex Morgan is the first non-tennis player at 12 after earning $5.8m (£4.77m).
Williams is the only woman to make it onto the Forbes top 100 best paid athletes list.