Christian Coleman shrugged off the controversy of his build-up to the World Championships to win the 100m final in 9.76 seconds. The pre-event favourite, who avoided a ban for three missed doping tests, finished well clear of defending champion and fellow American Justin Gatlin, who clocked 9.89 in Doha.

Canada’s Andre de Grasse took bronze in 9.90. Britain’s European champion Zharnel Hughes was sixth in 10.03. Although he will receive generous plaudits for his display here, USA track great Michael Johnson said prior to the competition the three missed tests “completely disqualifies” his compatriot from being the face of the sport. “I am humble, I am just here to win titles,” an elated Coleman said afterwards. “It is an incredible time. I think the sky’s the limit, I think I still have a lot of things I can work on and improve, I think I can keep dropping my time.”