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XVI Pan American Games - Day 1

GUADALAJARA, MEXICO - OCTOBER 15: Ariel Hsing of USA in action 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