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Olympics Day 9 - Athletics

LONDON, ENGLAND - AUGUST 05: Usain Bolt of Jamaica competes in the Men's 100m Semi Final on Day 9 of the London 2012 Olympic Games at the Olympic Stadium on August 5, 2012 in London, England. (Photo by Alexander Hassenstein/Getty Images)

Bolt sprints into the record books

Usain Bolt blitzed to an unprecedented Olympic sprint double-double when he retained his 200 metres title at the 2012 London Games. Bolt matched his stunning Beijing 100 and 200 crowns four years ago by adding a second London Games gold to his imperious 100 victory, clocking 19.32 seconds for victory.