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Jamaica's Shelly-Ann Fraser-Pryce reacts as she won the women's 100m final at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/GettyImages)

Jamaica's Shelly-Ann Fraser-Pryce reacts as she won the women's 100m final at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London.    AFP PHOTO / JEWEL SAMAD        (Photo credit should read JEWEL SAMAD/AFP/GettyImages)