Caster Semenya is a worldfamous South African runner whose incredible talent sparked a big debate about gender in sports. Because of her natural biology, she faced tough rules that forced her to take medicine just to compete as a woman. Her story isn’t just about running fast—it’s about fairness, identity, and how sports decide who belongs where. As courts and sports groups argue, Semenya’s case is changing how we think about gender and what it means to compete fairly. This battle will shape the future for many athletes who don’t fit simple categories.