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RIO DE JANEIRO, BRAZIL - AUGUST 14:  Wayde van Niekerk of South Africa reacts after winning the Men's 400 meter final on Day 9 of the Rio 2016 Olympic Games at the Olympic Stadium on August 14, 2016 in Rio de Janeiro, Brazil.  (Photo by Cameron Spencer/Getty Images)
RIO DE JANEIRO, BRAZIL - AUGUST 14:  Wayde van Niekerk of South Africa reacts after winning the Men's 400 meter final on Day 9 of the Rio 2016 Olympic Games at the Olympic Stadium on August 14, 2016 in Rio de Janeiro, Brazil.  (Photo by Cameron Spencer/Getty Images)

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Van Niekerk aiming for Bolt's 200m record

Wayde Van Niekerk believes he can challenge Usain Bolt's 200m world record at the World Championships.

Van Niekerk aiming for Bolt's 200m record

Wayde Van Niekerk believes he can challenge Usain Bolt's 200m world record at the World Championships.