South Africa has two athletes doing duty on day eight of the IAAF World Championships in London on Friday.
Evening Session (SA time)
8:35pm: 800m semi-finals – Caster Semenya (Heat 2, 21:45pm) and Gena Lofstrand (Heat 3, 21:55pm)
What they need to do: Finish in the first two of their heat or be among the two next fastest of the semi-finals.