Noah Lyles needed an unexpected rally to win the world 200m title in 19.83 seconds in Doha on Tuesday, capping a triple gold night for the U.S.
Earlier, Donovan Brazier won the 800m in an American record. Sam Kendricks repeated as world champion in the pole vault.
But Lyles was the headliner in the final event of the session. Lyles, an overwhelming favorite, trailed Brit Adam Gemili coming off the turn. He powered past Gemili and into the lead to beat Canadian Olympic silver medalist Andre De Grasse by .