South Africa has five athletes doing duty on day four of the IAAF World Championships in London on Monday.
Afternoon session (all times SA)
19:30pm: 200-metre heats – Wayde van Niekerk (Heat 3, 7.46pm), Akani Simbine (Heat 6, 8.10pm) and Clarence Munyai (Heat 7, 8.18pm)
What they have to do: Finish in the first three in their heat or be one of the next three fastest qualifiers in the heats
20:30pm: 400m hurdles heats: Wenda Nel (Heat 4, 8.57pm)
What she has to do: Finish in the first four in her heat or be one of the next four fastest in the heats.
22:50pm: 1500m final – Caster Semenya