Only because the coach did not want all of his players to be too injured for their upcoming playoffs. But any coach who has a sincere regard for the welfare of his female players would not have exposed them to such potential dangers in the first place, even if it meant not being able to play in the playoffs.
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Girls high-school basketball team forfeits after trans player injures 3 players in Massachusetts | The Post Millennial | thepostmillennial.com
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Girls high-school basketball team forfeits after trans player injures 3 players in Massachusetts | The Post Millennial | thepostmillennial.com

“Once the third was injured, the remaining five expressed concern to him about continuing to play.”