Update: Olympian Caster Semenya can compete while challenging testosterone rules in court

The supreme court of Switzerland, the Swiss Federal Tribunal, is taking a second look at the rules that would require certain female athletes to take testosterone suppressants in order to compete.

On May 1, Olympic champion Caster Semenya lost her case against the IAFF at the Court of Arbitration for Sport. The court ruled that gender discrimination was essential for fair competition, requiring Semenya to alter her natural testosterone levels with suppressants in order to compete. Her other options include entering the men’s competition, or entering intersex races if they are available.

The rules went into effect May 8, but this new ruling by the Swiss Federal Tribunal temporarily lifts the bans. The IAAF has until June 25 to respond with arguments to the Supreme Court.

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