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    XVI Pan American Games - Day 1

    GUADALAJARA, MEXICO - OCTOBER 15: Erica Wu (R) and Lily Zhang of USA celebrate after their doubles victory during the Women's Table Tennis during Day One of the XVI Pan American Games at Code Dome on October 15, 2011 in Guadalajara, Mexico. (Photo by Scott Heavey/Getty Images)

    Youngest Olympians of 2012

    Teenage athletes from around the globe have punched their ticket for

    London 2012. Ranging from ages 15 to 19, these young adults qualified to

    participate on behalf of their nations at the Summer Olympics. -- By

    Paul Rosales