Let’s be clear: Tennis has a problem with gender equality.
Although men and women earn the same prize money at Grand Slam tournaments, there’s a wide pay gap over all. (There is less prize money overall in women’s tennis, so Serena Williams has earned tens of millions of dollars less than Novak Djokovic even though she has many more Grand Slam singles titles.).
At the United States Open, the French player Alizé Cornet received a penalty for temporarily removing her shirt on court and inadvertently flashing her sports bra. When male players change shirts, no one second-guesses it.