South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
Shaunae Miller's dive denies Allyson Felix 400m gold in dramatic final | Sport | The Guardian
Olympic Track and Field 2016: Men's 1,500M Medal Winners, Times and Results | Bleacher Report | Latest News, Videos and Highlights
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Athletics/women 400m Photos - Best Olympic Photos
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Athletics at the 2016 Summer Olympics – Women's 400 metres hurdles - Wikipedia
Report: men's 400m final – Rio 2016 Olympic Games| News
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Allyson Felix - Wikipedia
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Shaunae Miller dives to beat Allyson Felix in 400m final at Rio Olympics - CNN
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Rio Olympics 2016: Wayde van Niekerk breaks world record to win Olympic gold - BBC Sport
Wayde van Niekerk - Olympic 400m Champion | Real Life Stories
Olympic Track and Field 2016: Men's 400M Medal Winners, Times and Results | Bleacher Report | Latest News, Videos and Highlights
How Twitter reacted to Van Niekerk's GOLD | TeamSA
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Rio 2016: United States' Kerron Clement wins gold in men's 400m hurdles - SBNation.com
Report: men's 400m final – Rio 2016 Olympic Games| News
![Kirani James [GRN] - Men's 400m | Champions of London 2012 - YouTube](https://i.ytimg.com/vi/_h7gFkvHqTU/maxresdefault.jpg "Kirani James [GRN] - Men's 400m | Champions of London 2012 - YouTube")
Kirani James [GRN] - Men's 400m | Champions of London 2012 - YouTube
400m women - Olympic Athletics
Report: men's 400m semi-finals – Rio 2016 Olympic Games| News
Olympic Swimming 2016: Women's 400M Individual Medley Medal Winners and Times | Bleacher Report | Latest News, Videos and Highlights
Wayde van Niekerk breaks world 400m record for Olympic gold - AW
