Watch every U.S. track and field gold medal from the 2016 Olympics | NBC Olympics
Nirmala Sheoran Profile: Nirmala Sheoran Biography, Stats, Athlete, Women 400 metres
Shaunae Miller dives to beat Allyson Felix in 400m final at Rio Olympics - CNN
Report: women's 400m semi-finals – Rio 2016 Olympic Games| News
Wayde van Niekerk breaks world 400m record for Olympic gold - AW
How Twitter reacted to Van Niekerk's GOLD | TeamSA
Report: men's 400m semi-finals – Rio 2016 Olympic Games| News
Rio Olympics 2016: Wayde van Niekerk breaks world record to win Olympic gold - BBC Sport
Olympic Track and Field 2016: Men's 400M Medal Winners, Times and Results | Bleacher Report | Latest News, Videos and Highlights
Wayde van Niekerk's 'massacre'; Britain's golden day: Olympics roundup - The National
Rio 2016: Brilliant Wayde Van Niekerk smashes Michael Johnson's 400m world record - Rio Olympics 2016 (Australian Broadcasting Corporation)
SportsCenter on Twitter | Allyson felix, Track and field athlete, Olympic medals
Rio 2016: Brilliant Wayde Van Niekerk smashes Michael Johnson's 400m world record - Rio Olympics 2016 (Australian Broadcasting Corporation)
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
Report: men's 400m final – Rio 2016 Olympic Games| News
400m women - Olympic Athletics
Rio 2016: Brilliant Wayde Van Niekerk smashes Michael Johnson's 400m world record - Rio Olympics 2016 (Australian Broadcasting Corporation)
2008 Olympic Champion LaShawn Merritt Returns To 400-Meter Podium, Earns Bronze
Rio Olympics 2016: drama in 400m and David Rudisha wins 800m – day 10 as it happened | Sport | The Guardian
Wayde van Niekerk - Olympic 400m Champion | Real Life Stories
Olympic Track and Field 2016: Men's 1,500M Medal Winners, Times and Results | Bleacher Report | Latest News, Videos and Highlights
Athletics/women 400m Photos - Best Olympic Photos
All Australia's medals won at the Rio 2016 Olympic Games | Daily Telegraph
Athletics at the 2016 Summer Olympics – Women's 400 metres hurdles - Wikipedia
