Semenya was the world champion in 2009, the worlds silver medalist in 2011, and the Olympic silver medalist in London. Former world outdoor champion Eunice Sum was way back in fourth in 1:59.32 at the first Diamond League series in Africa. Former world champion David Oliver edged out Orlando Ortega in a close finish in the 110 hurdles. On her return to the Diamond League, double Olympic champion Valerie Adams earlier won the shot put with a season's-best 19.68 meters. Caster Semenya set another world-leading time and again showed she will be one of the runners to watch at the Rio Olympics, leaving behind a strong field to easily win the 800 metres at the Diamond League meeting in Morocco on Sunday.

Source: CBC News May 22, 2016 13:37 UTC