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US swimmer Natalie Coughlin sticks her tongue out after she competed in the final of the women's 100-metre backstroke swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 26, 2011. She won bronze. AFP PHOTO / PETER PARKS (Photo credit should read PETER PARKS/AFP/Getty Images)

U.S. swim star Natalie Coughlin

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