In the men's 100 metres, the semi-finals were dominated by world leader Christian Coleman from the United States, finishing in 9.88 seconds while no other qualifiers broke 10 seconds. In the final, defending champion American Justin Gatlin got a good start to gain a step on the field, except Coleman got a better start, gaining that step on Gatlin and extending his lead to a dominating victory in 9.76 seconds, a new personal best and world-leading time for the season that becomes the 6th best in history, just 2 ticks behind Gatlin's best. Returning to form, Canada's Andre De Grasse closed and nearly caught Gatlin at the line in 9.90, a new wind-legal personal best, though he has run as fast as 9.69 wind-aided.
