Caster Semenya was elevated for the gold medal position two years ago when Russian athlete Mariya Savinova was later disqualified for doping violations.

In June, it was announced that Semenya was free to run the 800m without having to take medication. But later, she was denied participation in her favoured 800 metres race in Morocco, following a rule change by the IAAF, athletics’ governing body.

Olympic 800m champion Caster Semenya has accused the world athletics’ governing body, the IAAF, of using her as a ‘human guinea pig’.