From left, USA's Carmelita Jeter,  Marshevet Myers, Allyson Felix and Bianca Knight,  pose with the gold medal  during the medal ceremony of the Women's 4x100m relay final at the World Athletics Championships in Daegu, South Korea, Sunday, Sept. 4, 2011. (AP Photo/Martin Meissner) Photo: Martin Meissner, Associated Press / AP
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