This is the correct decision. Semenya is biologically (XY) male with male levels of testosterone produced by internal testes. She should not be competing against female athletes. Without a line drawn **somewhere**, females could never compete. https://www.nytimes.com/2019/07/30/sports/caster-semenya-world-championships.html

Any criteria for participation in female sports that accepts Y chromosomes, male levels of testosterone, and testes is in effect indistinguishable from no criteria at all.

Let me clarify the tweet directly above, as some have correctly pointed out that individuals with complete androgen insensitivity have Y chromosomes, male levels of T, and testes. To clarify, the criteria in the above tweet are meant to apply only to those sensitive to androgens.