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Olympics Day 6 - Tennis

LONDON, ENGLAND - AUGUST 02: Serena Williams of the United States returns a shot to Caroline Wozniacki of Denmark in the Quarterfinals of Women's Singles Tennis on Day 6 of the London 2012 Olympic Games at Wimbledon on August 2, 2012 in London, England. (Photo by Clive Brunskill/Getty Images)

Ages of Olympians revealed

Find out the ages of your favorite Olympians and learn about some that defy their age. --Tiara Chiaramonte, Yahoo! Sports