Van Niekerk betters 400m world record
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Van Niekerk betters 400m world record

South African Wayde van Niekerk smashes the men's 400m world record in winning the Olympic title at Rio 2016.

Van Niekerk betters 400m world record

South African Wayde van Niekerk smashes the men's 400m world record in winning the Olympic title at Rio 2016.