Fighting sports are divided by weight (boxing, judo, etc) but no woman would even be close to winning in the same weight category of men, so we will never see a woman in those sports at the Olympics or anywhere it matters.

And who would pick a woman to play in a team of volleyball, basketball, soccer? I think that historically the only sport in which men and women are absolutely equal is shooting. Maybe curling but it's usually the man that sweeps the ice (a little bit of extra strength.)