Tokyo Olympic men's 100m championJacobs announced his return in Austria in a truly sensational way. He ran9.67s to win — a time only behind Usain Bolt's 9.58 from the 2009 Berlin World Championships and 9.63 from the 2012 London Olympics.

However, because the race encountered strong winds,in that day's heats Jacobs had already produced an excellent 9.84s with a +2.3 m/s tailwind, and the final's9.67s was achieved ina +4.1 m/s excessive tailwind, so it will notbe entered on the legal-wind world record lists, but it remains the third-fastest 100m performance in athletics history regardless of wind conditions.

Although wind-assisted, the result is still startling — after all, it has been 14 years since anyone ran sub-9.70.

With the strong wind, the field produced fast times: Britain's Romell Glave took second in 9.76s, South Africa's 400m world record-holder Wayde van Niekerk was third in 9.83s — staggering. Japan's Yoshihide Kiryu also broke the 10-second barrier, clocking 9.99s for fourth.