FILE - In this June 29, 2012, file photo, McKayla Maroney performs on the balance beam during the preliminary round of the women's Olympic gymnastics trials, in San Jose, Calif. World vault champion McKayla Maroney has done only light training this week because of a sore right foot. (AP Photo/Jae C. Hong. File)
FILE - In this June 29, 2012, file photo, McKayla Maroney performs on the balance beam during the preliminary round of the women's Olympic gymnastics trials, in San Jose, Calif. World vault champion McKayla Maroney has done only light training this week because of a sore right foot. (AP Photo/Jae C. Hong. File)