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.[48] 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.[48][49]