2) of course it's ok, it's a sport? Injuries happen in sports. Particularly violent ones. Myke Tyson would probably break my skull as well if I was ever so dumb to get in the ring with him. There aren't only two genders just look at Caster Semenaya https://www.theguardian.com/sport/2016/jul/29/what-is-an-int... or look at this mess (and that's only part of it): https://en.wikipedia.org/wiki/Hermaphrodite#Humans