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DAEGU, SOUTH KOREA - AUGUST 28: Usain Bolt of Jamaica (4th left) makes a false start and is disqualified in the men's 100 metres final during day two of 13th IAAF World Athletics Championships at the Daegu Stadium on August 28, 2011 in Daegu, South Korea. (Photo by Ian Walton/Getty Images)

DAEGU, SOUTH KOREA - AUGUST 28:  Usain Bolt of Jamaica (4th left) makes a false start and is disqualified in the men's 100 metres final during day two of 13th IAAF World Athletics Championships at the Daegu Stadium on August 28, 2011 in Daegu, South Korea.  (Photo by Ian Walton/Getty Images)