Running is the most natural, and likely oldest athletic endeavor known to man. The quest to be the fastest man in the world is as old as time itself. Whether that is to outrun a charging lion or stand on a podium with a gold medal, that chase remains a fierce one.
There won't be any lions or tigers (we don't think) in The Estádio Olímpico João Havelange in Rio on Sunday, but the competition will be as fierce as it has ever been.
Usain Bolt, the 29-year-old Jamaican and two-time defending gold medalist in the 100 meters, is looking to make history on Sunday night, but he will definitely be pushed by the field.