Man Named 'Tiffany' Is Dominating Women's Pro Volleyball in Brazil

[GrandizerII]

As long as their testosterone levels are below the normal male range, then what's the problem?

First, that's not what I asked. If a man declares that he's a woman, I presume that by your standards, she is at that moment. Should she be allowed to compete with women at that point? If not, why not?

I am not the authority on this matter, so you're asking the wrong guy. I follow what the IOC proposes on this, since they would know more about potential controversies than you and I would, and because their regulations/guidelines are based on current medical/scientific advice.

Second, why would you define female as not male? Why not say that a trans woman must be within the female range, rather than outside the male range?

For the sake of consistency. If transwomen were forced to compete against men instead if their testosterone levels don't fall within your preferred female range, then many cisgendered/intersex women with relatively high testosterone levels would have to be moved as well. And I don't think that's what they themselves want anyway.