PHOTOS: Plano's Nastia Liukin retires from gymnastics
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Credit: Getty Images
ST. LOUIS, MO - JUNE 8: Nastia Liukin prepares to compete on the uneven bars during the Senior Women's competition on day two of the Visa Championships at Chaifetz Arena on June 8, 2012 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)
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