Justin Gatlin
Justin Gatlin had the world leading time in 2015. Gatlin ran 9.83 s in the heats and 9.77 s in the semi-final. Reigning champion Usain Bolt ran times of 9.96 s in both rounds. Jimmy Vicaut and Su Bingtian qualified for the final with tied fastest loser times of 9.986 s, so there were 9 competitors in the final.