Sydney McLaughlin shatters 400 hurdles record with 50.68

Shaunae Miller-Uibo, of Bahamas, wins the final of the women's 400-meter run at the World Athletics Championships on Friday, July 22, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

Shaunae Miller-Uibo, of Bahamas, wins in a the semifinal of the women's 400-meter run at the World Athletics Championships on Wednesday, July 20, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

Gold medalist Sydney Mclaughlin, of the United States, sits on the track after the final of the women's 400-meter hurdles at the World Athletics Championships on Friday, July 22, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

Gold medalist Sydney Mclaughlin, of the United States, is embraced after winning the final of the women's 400-meter hurdles at the World Athletics Championships on Friday, July 22, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

Sydney Mclaughlin, of the United States, receives her Gold medal after the final of the women's 400-meter hurdles at the World Athletics Championships on Friday, July 22, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

Gold medalist Sydney Mclaughlin, of the United States, poses by a sign after winning the final of the women's 400-meter hurdles at the World Athletics Championships on Friday, July 22, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)