BBC Sport - World Athletics Championships 2017: Wayde van Niekerk wins 400m gold

Dominant Van Niekerk wins 400m gold

South Africa's Wayde van Niekerk defends his 400m title with a dominant victory at the World Championships in London.

WATCH MORE: Showboating Kipruto hangs on for steeplechase gold

Follow live coverage of the World Athletics Championships here

World Athletics Championships 2017

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