Kai Pfaffenbach / Reuters
Jamaica's Usain Bolt crosses the finish line ahead of Ryan Bailey of the U.S., second left, Justin Gatlin of the U.S., second right, and Jamaica's Yohan Blake to win the men's 100m final during the London 2012 Olympic Games at the Olympic Stadium, August 5, 2012. Blake finished second and Gatlin finished third.
Pascal Le Segretain / Getty Images
Usain Bolt of Jamaica celebrates after crossing the finish line to win the gold medal in the men's 100m final.