Team USA claims WORLD RECORD via SHOCKING 4x400 mixed relay finish at Worlds | NBC Sports - YouTube https://www.youtube.com/watch?v=r8AyMplnFVU&ab_channel=NBCSports
#TrackAndField #4x400M #MixedRelay #WorldChampionship
#TrackAndField #4x400M #MixedRelay #WorldChampionship