SYDNEY STUNS 🤯🔥 Sydney McLaughlin-Levrone breaks the U.S. 400m record with a 48.29 in just the semifinal! That time places her at No. 7 all-time worldwide, and even she was shocked. #WCHTokyo25 coverage presented by @brooksrunning Website: http://flosports.link/3p20lTj Subscribe: http://flosports.link/3p4YLQp Get the FloSports iOS app: http://bit.ly/FloTrackiOSApp_9 Follow FloTrack Facebook: https://www.facebook.com/FloTrack Twitter: https://twitter.com/flotrack Instagram: https://www.instagram.com/FloTrack