Photos: US 2012 Olympians to watch
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Credit: Getty Images
ROME - AUGUST 01: Michael Phelps of the United States celebrates victory in the Men's 100m Butterfly Final during the 13th FINA World Championships at the Stadio del Nuoto on August 1, 2009 in Rome, Italy. Phelps broke the world record setting a new time of 49.82 seconds. (Photo by Al Bello/Getty Images)
