West Virginia v. B. P. J. · ¶62

And as to competitive fairness, allowing biological males to play on women’s and girls’ sports teams can put female athletes at a serious disadvantage. That is because sports are generally zero sum. Allowing a biological male athlete to compete on a girls’ team necessarily displaces or disadvantages a female athlete—replacing her on the roster, knocking her out of the starting lineup, reducing her playing time, depriving her of a medal, and the like. That hard reality of sports cannot be ignored or swept under the rug. On the contrary, that reality must and does inform interpretation of the term “reasonable” in the Javits Amendment.

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