Four targeting gold

Wayde van Niekerk

The world record-holder is surely unbeatable in the 400m and will challenge for the 200m title.

Caster Semenya

Her intersex classification still causes controversy but Semenya’s class over 800m is undoubted. Hard to see her being beaten.

Luvo Manyonga

His long jump showdown with fellow South African Ruswahl Samaai could be epic, and might even see a world record fall.

Sunette Viljoen (above)

The former cricketer – she played against England at the 2000 World Cup – won silver in the javelin in Rio.