Wayde van Niekerk relives Rio Olympics 400m gold - BBC Sport
South Africa's Wayde van Niekerk relives his historic 400m gold at the Rio Olympics, when he smashed Michael Johnson's 17-year-old world record.
South Africa's Wayde van Niekerk relives his historic 400m gold at the Rio Olympics, when he smashed Michael Johnson's 17-year-old world record.