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US swimmer Natalie Coughlin reacts after she competed in the final of the women's 100-metre freestyle swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 29, 2011. AFP PHOTO / FRANCOIS XAVIER MARIT (Photo credit should read FRANCOIS XAVIER MARIT/AFP/Getty Images)

U.S. swim star Natalie Coughlin

Eleven-time Olympic medalist Natalie Coughlin wants gold in London.