Despite a slow start in the men's 100 metre heat, the world's fastest man won the 100m heat almost without any effort at all.

Prior to this year's Rio Olympics, the record breaking sprinter played down concerns over his fitness with speculations being made concerning the Jamaican's hamstring.

Watch the video of how the three gold medalist cruised to victory on Saturday.

story by Musah Abelyire/ghanaguardian.com