The second and third fastest men of all time will take to the track at Crystal Palace on July 13-14 less than one month before a potential meeting in the 100m final at the Olympics.

Tyson Gay and Asafa Powell

American star Gay won the US trials last week in a respectable 9.86 seconds, while Powell, the former world record holder finished third behind Yohan Blake and Usain Bolt in the Jamaican trials.