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Jamaica's Usain Bolt (C) reacts as the race judge stops the competitors after a false start in the men's 100 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on August 28, 2011. Bolt was disqualified from the final of the men's 100 metres for a false start. AFP PHOTO / OLIVIER MORIN (Photo credit should read OLIVIER MORIN/AFP/Getty Images)

Jamaica's Usain Bolt (C) reacts as the race judge stops the competitors after a false start in the men's 100 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on August 28, 2011. Bolt was disqualified from the final of the men's 100 metres for a false start.   AFP PHOTO / OLIVIER MORIN (Photo credit should read OLIVIER MORIN/AFP/Getty Images)