Overview

• Rules take effect immediately for the Sept. 4–14 World Championships in Liverpool, using tests that detect Y‑chromosome material and apply once in an athlete’s career for those 18 and over.
• National federations must conduct the screening and submit certification; athletes without documentation are ineligible and teams can face sanctions.
• Taiwan’s Olympic champion Lin Yu‑ting will comply with the testing and proceed with her entry, her coach said.
• Olympic welterweight champion Imane Khelif has not registered for Liverpool and Algeria will send an alternate; she denied retirement rumors and said she is training.
• The measures follow the IBA’s 2023 disqualifications and the IOC’s 2024 clearances, and arrive as provisionally IOC‑recognized World Boxing sets eligibility standards for the run‑up to Los Angeles 2028.