Caster Semenya is the 2012 and 2016 Olympic champion and former world champion in women's 800 metres. She is also affected by the hyperandrogenism rule of IAAF like Dutee but faced a different fate. In April 2018, the IAAF announced new rules that required hyperandrogenous athletes to take medication to lower their testosterone levels, effective beginning in November 2018. Due to the narrow scope of the changes, which only apply to athletes competing in the 400 m, 800 m, and 1500 m, many people thought the rule change was designed specifically to target Semenya.