Usain Bolt, the greatest sprinter of all time, will look to top off another epic Olympic campaign on Saturday when he goes in the 4x100m relay, chasing his third gold medal of the London Games.

The Jamaican, who already has the 100m and 200m golds under his belt, is eyeing a second consecutive Olympic golden treble after winning the 100m, 200m and 4x100m in Beijing. Hang in there for the time.