Indian Wells tournament chief Raymond Moore has quit after his controversial comments about women's tennis.
Moore, 69, said the women's game "rides on the coat-tails" of the men, and that male stars had "carried the sport".
Men's world number one Novak Djokovic then claimed his tour should fight for more money.
Tennis legend Martina Navratilova said Moore's comments were "extremely prejudiced", adding female players may boycott Indian Wells if Moore stayed.
Moore said female players "should get down on their knees" in thanks to male counterparts such as Roger Federer and Rafael Nadal.