THE STORY
In May 2019, the Court of Arbitration for Sport upheld the International Association of Athletics Federations' (IAAF) regulations requiring female athletes with naturally high testosterone levels to undergo medical treatment to reduce them. South African runner Caster Semenya, who has such levels, challenged these rules but was unsuccessful, leading to her exclusion from certain competitions. This decision sparked widespread debate over fairness and discrimination in athletics.
TEAMS / PEOPLE:
Caster Semenya
WHY IT MATTERS
The ruling has significant implications for athletes with differences of sexual development, raising questions about gender, fairness, and human rights in sports.