The Women's Tennis Association (WTA) has introduced SRY gene testing as part of its eligibility rules for women's professional tennis, a move aimed at ensuring competitors in the women's tour are biologically female. The change reflects a wider push across sport to safeguard fair competition amid ongoing debate over transgender and intersex participation in female categories, and follows heightened scrutiny of eligibility rules across several sporting bodies.

The SRY gene, typically found on the Y chromosome, is used as a marker to confirm biological sex for competition purposes. The article notes this development alongside a recent US Supreme Court ruling that upheld state bans preventing biological boys from competing in girls' school sports, a decision authored by Justice Brett Kavanaugh with a dissent from Justice Sonia Sotomayor, which drew praise from women's sports advocates and criticism from Democratic lawmakers.