South Africa's Wayde van Niekerk Sets World Record in the 400 - WSJ
Sydney McLaughlin wins gold with world record in 400 hurdles - Los Angeles Times
Karsten Warholm destroys 400 meter hurdles world record in Olympic final - Sports Illustrated
Rio Olympics 2016: Usain Bolt proposes match race with
The men's 400 world record moves rarely, but it does move dramatically
Brilliant Van Niekerk smashes 400m world record | Reuters.com
N.J. Catholic high school alum breaks world record to win 400m hurdle gold - Catholic Review
We've All Been Waiting For This... || The 400 Meter World Record - YouTube
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
Men's 400m world record holder Van Niekerk tests positive for coronavirus
Sydney McLaughlin Beat Dalilah Muhammad, Set a New World Record and Won Gold - The New York Times
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Michael Johnson Sevilla 1999: Men's 400m world record - YouTube
Wayde van Niekerk wins gold, sets world record in 400m - Sports Illustrated
Women's 400m World Record is 48.25 – Žiga P. Škraba
McLaughlin breaks own 400 meters hurdles record with 'Track Town, USA' magic | Reuters
Wayde van Niekerk to miss world championships - OlympicTalk | NBC Sports
Sydney McLaughlin Shatters 400m Hurdles World Record at 50.68 Seconds | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Norway's Warholm breaks 29-year-old 400m hurdles world record - CGTN
Karsten Warholm breaks own world record in 400-meter hurdles (Video)
Niekerk breaks 400m world record || Niekerk breaks 400m world record
13-Year-Old 47s 400m WORLD RECORD! - YouTube
Norway's Warholm breaks 400 metres hurdles world record | Reuters
Breanna Clark breaks own world record to defend 400m Paralympic title - OlympicTalk | NBC Sports
