Caster Semenya is subjected to gender verification tests after improving her 800m record from the 2008 World Junior Championships.

The IAAF asserted that it felt compelled to carry out investigations on Semenya’s performance and sex after she made improvements of 25 seconds at 1500m and 7 seconds at 800m claiming that “this sort of dramatic breakthroughs usually aroused the suspicion of drug use.” Semenya was suspended from all competitions pending the results of her tests.