In December 1935, Zdenek Koubek, one of the most famous sprinters in European women?s sports, declared he was now living as a man. Around the same time, the celebrated British field athlete Mark Weston, also assigned female at birth, announced that he, too, was a man. Periodicals and radio programs across the world carried the news; both became global celebrities. A few decades later, they were all but forgotten. And in the wake of their transitions, what could have been a push toward equality became instead, through a confluence of bureaucracy, war, and sheer happenstance, the exact opposite: the now all-too-familiar panic around trans, intersex, and gender nonconforming athletes.