Sydney McLaughlin-Levrone holds the world record in the 400-meter hurdles and took a giant step closer to setting it in the 400 flat at world championships.
Despite less-than-ideal conditions in Tokyo, Isabella Whittaker, Lynna Irby-Jackson, Aaliyah Butler, and Sydney McLaughlin-Levrone combined for a championship record 3:16.61 in the women's 4x400m ...