The Associated Press:

Transgender swimmer Lia Thomas failed in her challenge against rules that stop her from competing in elite women’s races because judges ruled she did not have standing to bring the case.

The Court of Arbitration for Sport panel of three judges dismissed Thomas’ request for arbitration with the World Aquatics governing body, in a ruling released Wednesday.

World Aquatics banned transgender women who have been through male puberty from competing in women’s races. It also created an “open” category for which transgender athletes would be eligible.

Thomas had asked the sports court in Switzerland to overturn the rules approved in 2022 that she said were invalid, unlawful and discriminatory.

So no elite competition swimming for Thomas, Olympics included.

The back story is that Thomas used to compete for Penn’s men’s team, then transitioned and was ruled eligible to swim for the women’s team after meeting the NCAA criteria for testosterone suppression. When the controversy expanded and national media outlets picked it up, the NCAA changed their rules, instead shifting guidelines for participation to individual sports’ national governing bodies. USA Swimming then updated their guidelines, which did not affect Thomas at the time, because she was considered an amateur, but now that she’s a pro, the rule set is different.

Short version of a long story, but that’s the general gist. World Aquatics did introduce an “open” category for transgender swimmers to participate in, but ahead of the 2023 World Cup in Berlin, they cancelled because nobody applied.