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

[John V]

As for this, note the lower boundary for normal male range:

Unless you measure it in the evening. Then it's 6.7:
https://www.ncbi.nlm.nih.gov/pubmed/15476527

Perhaps the rationale then is that it would be unfair for, say, intersex women who happen to have relatively high testosterone levels and yet still be below the male range to be moved to compete against men instead. Thus, 10's the limit.

"Intersex woman" is an oxymoron, but I can see that as a rationale for women with hyperandrogenism, which is what the policy addresses. I don't know that I'd want any limits on such women myself. But, we're talking about transgender women.