The world and Olympic champion cruised to the commonwealth 800 metre title, crossing the line in 1:56.68. Her winning time is a new Commonwealth games record and a new World lead.
Kenya's Margaret Wambui took silver in 1:58.07 while Jamaica's Natoya Goule got bronze in a personal best time of 1:58.82
Earlier in the week, Semenya also won gold in the 1500 metres.