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Billie Jean King's WTA Fights Back: Mandatory Sex Testing for Trans Women

2026-07-20 · Billie Jean King · Club News

Billie Jean King's WTA Fights Back: Mandatory Sex Testing for Trans Women

Billie Jean King's WTA Fights Back: Mandatory Sex Testing for Trans Women

The Women's Tennis Association (WTA) has announced a new policy requiring all competitors to undergo mandatory sex testing to confirm their female sex. This move comes as a response to the ongoing debate surrounding trans women's participation in women's professional tennis.

What happened?

The WTA, founded by tennis legend Billie Jean King in 1973, has implemented a new policy that will "preserve the integrity of women's professional tennis and maintain fair competition conditions." The policy requires all competitors to undergo testing to confirm their female sex, specifically by checking for the presence of the SRY gene, which is located on the Y chromosome and plays a major role in the development of male genitalia. This testing typically involves a blood test or a cheek swab.

Why it matters for Billie Jean King

As the founder of the WTA, Billie Jean King has been a fierce advocate for trans rights and has spoken out in support of trans women competing in sports that align with their gender identity. In 2020, King signed an amicus brief in support of transgender girls and women playing sports on teams that align with their gender identity. However, the WTA's new policy seems to contradict King's stance on the issue.

What comes next?

The WTA's decision to implement mandatory sex testing has sparked controversy and debate within the tennis community. Dr. Andrew Sinclair, the professor who first identified the SRY gene, has spoken out against the policy, stating that testing for the gene is an inadequate method of establishing biological sex. Sinclair argues that testing for the gene only tells you whether or not the gene is present, but does not provide any information about how the SRY gene is functioning or whether a testis has formed.

The WTA's new policy is set to take effect on Tuesday, and it remains to be seen how this will impact trans women's participation in women's professional tennis. The WTA has stated that it recognizes the sensitivity of the issue and is committed to treating all players with dignity and respect. However, the implementation of mandatory sex testing has raised concerns about the fairness and inclusivity of the policy.

In related news, the United States Tennis Association (USTA) has also banned trans women from competing in women's events. The USTA's decision was made at the end of last year, and it has been met with similar controversy and debate.

As the tennis community continues to grapple with the issue of trans women's participation in women's professional tennis, one thing is clear: the debate is far from over. The WTA's new policy has sparked a heated discussion about the fairness and inclusivity of the sport, and it remains to be seen how this will impact the future of women's professional tennis.

**The WTA's new policy is set to take effect on Tuesday, and it remains to be seen how this will impact trans women's participation in women's professional tennis.**

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