Bolt finishes ahead of Yohan Blake (second right) and Justin Gatlin (third right) to win the Olympic gold medal.

Usain Bolt of Jamaica celebrates winning gold. 

The sprinter's fly out of their starting blocks - but Bolt did not make a quick getaway.

Bolt celebrates after crossing the finishing line in first in the 100m final at the London Olympic Games.

Bolt did not run away with the race as he had done four years ago in Beijing, with Blake, Gatlin and Gay all running super quick times.