Resolution criteria

This market resolves to YES if, on or before December 31, 2027, the WNBA or the WNBA/WNBPA joint committee officially updates its Collective Bargaining Agreement (CBA), official rules, or publishes a formal league policy that explicitly defines "woman" or establishes specific eligibility criteria for the female category.

To qualify as a "definition" for the purpose of this market, the updated policy must explicitly outline the requirements for player eligibility regarding biological sex, sex assigned at birth, gender identity, or medical transition. This includes establishing:

• Requirements based on sex assigned at birth, chromosomal/genetic testing, or anatomical criteria.

• Requirements based on hormone levels (e.g., maximum testosterone thresholds).

• Explicit rules regarding gender identity (e.g., officially codifying self-identification or gender transition-related eligibility periods).

This market resolves to NO if, by December 31, 2027, no such policy or CBA update is officially adopted, and the league’s eligibility standards continue to state that "only players who are women are eligible" without further defining the term or establishing biological, medical, or identity-based criteria.

Primary sources for verification include the official WNBA website, official WNBPA releases, and major sports media outlets (e.g., ESPN, Associated Press).

Background

Under the current WNBA Collective Bargaining Agreement, "only players who are women are eligible to play in the WNBA," but the agreement does not define "women" or establish specific criteria regarding transgender athletes.

The eligibility debate escalated in mid-2026 following public comments by Indiana Fever guard Sophie Cunningham and subsequent protests. The issue gained further prominence when former NBA players Enes Kanter Freedom and Royce White declared their intent to enter the 2027 WNBA Draft, arguing that the lack of a formal definition of "woman" creates an eligibility loophole. In August 2026, WNBA Commissioner Cathy Engelbert convened a task force of team presidents and general managers to discuss transgender player eligibility, though the league stopped short of changing any rules.

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