🔥🔥🔥 Sydney McLaughlin,USA, smashes her own World Record and wins Olympic Gold in Tokyo . 51.46 sec 400 meter hurdles . Dalilah Muhammad battles for a close second , also breaking the former world record.. 51.58 sec! #olympicmagic . . . . . #sydneymclaughlin #usatf #worldrecord #400mhurdles #tokyo2020 #dalilahmuhammad #trackandfield #athletics #hurdles #teamusa #sydthekid #gosydgo @sydneymclaughlin16 @usatf @teamusa