my general suggestion is to pool by categories like weight, which is done in boxing. it seems wrong, i'll grant you that. but, both of the athletes with y chromosomes have been defeated by women without y chromosomes and there's little conclusion to draw but that this particular female athlete just didn't have the balls to take this...thing....on.
it looks bad, but it seems to be legitimate.
is weight the best category for female boxing, or should they choose something like bmi? i don't know. ask a boxer. i know i wouldn't want to fight the boxer from italy that went down immediately, or any other female boxer in my weight category.