The quartet of Vernon Norwood, Shamier Little, Bryce Deadmon and Kaylyn Brown timed 3min 07.41sec, smashing the previous best of 3:08.80 set when the US won world gold in Budapest last year.
Shamier Little passes on the baton to US' Bryce Deadmon in the mixed 4x400m relay heat of the athletics event at the Paris 2024 Olympic Games. AFP PHOTO