It looks like in 2005 and 2008, revenue was similar. It's diverged since then. https://www.statista.com/statistics/606439/tennis-atp-and-wta-tour-revenue/ htt

It looks like in 2005 and 2008, revenue was similar. It's diverged since then. https://www.statista.com/statistics/606439/tennis-atp-and-wta-tour-revenue/ https://www.statista.com/statistics/606439/tennis-atp-and-wt... 2007 was also the first year that Wimbledon (the last holdout of the four majors) paid the same to men and women victors. It seems psychologically hard to regress from that benchmark, even if in recent years overall revenue has once again diverged. And in non-majors, the pay disparity has returned, reflecting the differences in revenues: https://www.nytimes.com/2016/04/13/sports/tennis/equal-pay-gender-gap-grand-slam-majors-wta-atp.html https://www.nytimes.com/2016/04/13/sports/tennis/equal-pay-g...