Basically I would say boy vs. girl; tennis yes, wrestling Hell no!
I’m just glad I didn’t have to make this choice when I wrestled in HS. I pummeled enough guys and had been pummeled enough myself when I first started. IMHO, they should just take the mat with them and make quick work of it in a sportsman like way. The sport can be brutal even when done cleanly. I don’t remember too many moves where a person’s genitals would get in the way and if I encountered an opponent that wanted to use this socalled finger up the butt thing, I’D MAKE THEM PAY! Dearly.
“In theory it should be an even contest. It is one sport where the contestants are matched by general size and weight — but as another poster pointed out, the upper body strength differential probably puts most young women at a disadvantage.”
It’s not just the “upper body strength differential.” Men are more densely packed with muscle all around. Also, there’s that whole testosterone thing.
Not that training, technique, and talent can’t bridge the gap—up to a certain weight/maturity limit. But that brings us back to other problems (i.e. unseemliness and lose-lose).