After procedure modifications, the fastest qualifiers were assigned outside lanes, thus more favorable, wider turns.

With one of the fastest starters in history, 2019 100m champion Christian Coleman out of the blocks, USA was making up the stagger on Japan, the only team to its outside.

USA made the second pass from Kerley to Brandon Carnes ahead, but they were slowed by two attempts to transfer the baton.

Watson was able to hold off GBR's Eugene Amo-Dadzie and Japan's fast closing Abdul Hakim Sani Brown to retain bronze.

Upon crossing the finish line, Lyles held up 3 fingers for the cameras to celebrate his third gold medal at these championships.