Yohan Blake — 9.69 seconds

Yohan Blake matched Tyson Gay's 9.69 seconds at the 2012 Jamaican Trials, becoming the joint-second-fastest sprinter in history at age 22—younger than Gay was by 5 years. His silver medals behind Usain Bolt at London 2012 in both the 100m and 200m confirm he was only ever a fraction behind the greatest ever, but in 2012 he ran 9.69s with a 1.5 m/s tailwind, which is 30% less favorable than the wind conditions Gay had in Shanghai (0.0 m/s).