Heading around the back straight Wayde van Niekerk was the outright winner of the 400m race at the London World Championships.
This delivered South Africa with a second gold medal and alongside the two bronze it brings the total to 4 the same as achieved in the 2003 in Paris.
Van Neikerk will be back in action on Wednesday in the 200m semi final.
This delivered a second gold medal ww
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