From Semenya to Thomas: five sportspeople who changed the gender rules

AFP Sport looks at five sportspeople who have previously found themselves at the heart of the gender debate. Caster Semenya: hyperandrogeny A double Olympic champion and triple world champion in the 800m, South Africa's Caster Semenya raised all manner of questions about her hyperandrogenism, which causes an elevated level of testosterone. After a controversial victory at the 2009 world championships when she was just 18, the IAAF -- as World Athletics was previously known -- introduced rules two years later...