Looks to me like he already won.
I'd say as a former HS middle weight wrestler that it should be ok to let the girls compete. Of course I did this over thirty years ago. Never had to wrestle a girl before but the way I saw it is that you step out on the mat with me at your own risk. I never tried to intentionaly hurt someone but pain has always been one of the great determiners in this sport, and many legal holds could get quite uncomfortable. AS long as they know what they are in for and not given any breaks. It will be harder for the boys though, if they feel their self esteem at stake.
One thing more for the girls. Earings will never look good on a cauliflower ear and they don't go away.