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Dana Vollmer

Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

Gold For U.S. In Women’s 100m Butterfly

Dana Vollmer sets world-record in the process.

07/29/2012