American Fred Kerley led a US cleansweep as he stormed to victory in the men's 100m at the World Championships in Oregon on Saturday.

Everything stood still. Even the lottery draw in Jamaica was delayed, but Usain Bolt hit the jackpot last night, continuing his dominance in the sprints.

The battle to be crowned world's fastest man takes centre stage at the Rio Olympics on Sunday with Usain Bolt facing another showdown with Justin Gatlin where the image of athletics will be on the line.