By Dan Zaksheske
Published August 03, 2026
"Only players who are women are eligible to play in the WNBA."
Sounds simple, right?
That’s the exact language included in the recently signed collective bargaining agreement between the WNBA and the Women’s National Basketball Players Association.
But there’s one problem: The CBA doesn’t actually define "woman."

Riley Gaines, Sophie Cunningham, and XX-XY Athletics founder Jen Sey pose courtside after an Indiana Fever game with a sign thanking Cunningham. (Riley Gaines/XX-XY Athletics)
That should be easy to resolve, and OutKick/Fox News Digital attempted to do just that. In essence, we asked both the league and the players association: What is a woman?
We did not hear back from either.
The question became particularly relevant after Indiana Fever star Caitlin Clark was asked Sunday about the controversy surrounding teammate Sophie Cunningham’s comments that girls and women should not have to compete against biological men.
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"I think it’s for leagues and governing bodies to work with their athletes to find solutions," Clark said following Indiana’s 108-100 loss to the Minnesota Lynx. "Our focus is on basketball. That’s what we talk about and how we can get wins and obviously we didn’t do that tonight. So, we need to find an area to improve in that way."
Clark, the biggest star in women's sports, identified who she believes is responsible for resolving the issue: the leagues and governing bodies that operate women’s sports.

Caitlin Clark addressed the women's sports transgender athletes controversy after the Fever's loss, saying it's for leagues and governing bodies to find solutions with their athletes. (NBAE via Getty Images)
So, OutKick/Fox News Digital asked the WNBA and the WNBPA to do exactly what Clark suggested and explain the league’s eligibility standard.
Article XIII, Section 1(a) of the 409-page CBA states: "Only players who are women are eligible to play in the WNBA."
The document does not define "woman" or "women." The terms "transgender" and "gender identity" do not appear in the agreement.
The CBA contains detailed definitions for dozens of terms, including "rookie," "veteran," "player contract," "team," "regular season" and "WNBA competitions."
But it does not define the word that determines who is eligible to play in the league.
OutKick/Fox News Digital contacted the WNBA and asked five questions:
The WNBA did not respond by Monday's 3 p.m. ET deadline.

WNBA Commissioner Cathy Engelbert has not publicly clarified how the league defines or enforces the women-only eligibility language in its new collective bargaining agreement. (TNS)
OutKick/Fox News Digital also contacted the WNBPA and asked five similar questions:
The WNBPA also did not respond by Monday's 3 p.m. ET deadline.
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That leaves the WNBA in a strange position.
Its governing labor agreement declares that only women may play in the league, but neither the agreement nor the two organizations that negotiated it will explain what that requirement means.

WNBPA Executive Director Terri Carmichael Jackson leads the players association, which did not respond to questions about how it interprets the women-only eligibility language in the league’s new collective bargaining agreement. (Sportico via Getty Images)
The league has not publicly said whether eligibility is determined by biological sex, gender identity or some other standard. It has not identified who would make that decision, what criteria would be applied or whether a separate transgender-player policy exists outside the CBA.
The agreement also provides no stated process for enforcing the requirement. It does not establish an eligibility-verification procedure, identify what records or information a player must provide, expressly authorize sex or hormone testing for that purpose or explain how the league would resolve a challenge to a player’s eligibility.
Although the CBA requires players to undergo physical examinations and drug testing, those provisions address health, fitness and prohibited substances—not whether a player qualifies as a "woman" under Article XIII. Without a definition or a verification process, it is unclear how the WNBA could determine whether its own eligibility rule had been violated.
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Sophie Cunningham made her position clear.
Caitlin Clark said the league and its athletes should find a solution.
The WNBA and its players' association, at least for now, won’t even define the issue.
The WNBA has a rule.
It just won’t say what the rule means.
https://www.foxnews.com/outkick-sports/wnba-silent-caitlin-clark-says-leagues-should-determine-who-included-womens-sports