Wouldn't work, the leftists will still claim trannies are "biological women".

Technically, men's sports leagues don't ban women. It's just no women are qualified to compete. (Example: Once in a while, a woman golfer will get an exemption to a men's tournament. They usually don't make the cut.)

It's women's leagues that need to have a rule banning men, for reasons that are obvious to everyone except commies and trannies.