10 - Usain Bolt - At the London Olympics, Bolt won the 100m gold medal with a time of 9.63 seconds, before a successful defence of his 200m gold medal in a time of 19.32s. Bolt was then a part of Jamaica’s world-record breaking 4x100m relay team to cap off another incredible Olympic display.

10 - Usain Bolt - At the London Olympics, Bolt won the 100m gold medal with a time of 9.63 seconds, before a successful defence of his 200m gold medal in a time of 19.32s. Bolt was then a part of Jamaica’s world-record breaking 4x100m relay team to cap off another incredible Olympic display.