[masraum]

I believe olympics/sports should be segregated by sex (not gender, if we're using the modern definition) to ensure a safe and level playing field.

I believe if I remember what I read/heard (and if it was correct) the governing body uses testosterone levels at a time of testing to limit participants from competing as a woman. So someone born with XX as a full woman, that for whatever reason, has high testosterone levels could be excluded, while a person born XY as a man (intersex excluded) with low enough testosterone levels could be allowed to compete.

I think the test has been in place and was a way to ensure that women weren't increasing testosterone in order to gain an unfair advantage.

These days, there are no issues and implications.

I haven't heard anything that stated that the boxer had been a man (maybe the opponent said it?). But that's being alluded to.