Olympics 2021: World record in 400-meter hurdles for Karsten Warholm
US Olympic Trials: Sydney McLaughlin sets 400m hurdles world record - Sports Illustrated
Michael Johnson Sevilla 1999: Men's 400m world record - YouTube
N.J. Catholic high school alum breaks world record to win 400m hurdle gold - Catholic Review
400 metres at the Olympics - Wikipedia
Brilliant Van Niekerk smashes 400m world record | Reuters.com
McLaughlin Smashes Own World Record in Epic Women's 400m Hurdles Final | The Sport Digest
Sydney McLaughlin breaks her own 400-meter hurdles world record | CNN
Norway's Warholm smashes his own world record in Tokyo Olympics 400m hurdles final - National | Globalnews.ca
Sydney McLaughlin shatters 400-meter hurdles world record - The Boston Globe
How van Niekerk broke the 400m world record
Wayde van Niekerk breaks world 400m record for Olympic gold - AW
Meet Sydney McLaughlin, the 400-m Hurdles World Record Holder | Time
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Twitter reacts as Karsten Warholm smashes 400m hurdles world record at 2021 Tokyo Olympics | Sporting News
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
South Africa's Wayde van Niekerk breaks 400m world record - YouTube
Wayde van Niekerk: Five things to know about the Olympic 400m champion and world record holder
Femke Bol breaks 41-year-old world women's indoor 400m record | The Japan Times
VIDEO: South Africa's Van Niekerk shatters world record in 400 to win Olympic gold – The Mercury
Women's 400m World Record is 48.25 – Žiga P. Škraba
Olympic champion Sydney McLaughlin breaks her own world record in 400-meter hurdles
Rai Benjamin Takes Silver In Record-Breaking 400-Meter Hurdles Finish
Olympics 2021: World record in 400-meter hurdles for Karsten Warholm
McLaughlin sets new world record in 400M hurdles, books spot on Team USA
Sydney McLaughlin Beat Dalilah Muhammad, Set a New World Record and Won Gold - The New York Times
