Chinese gymnast Zhang Yang competes during the pommel horse test at the Mexican Gymnastics Open in Acapulco, south Mexico, Nov. 28, 2013. The three-day Mexican Gymnastics Open started on Nov. 28. (Xinhua/Jesus Espinosa)
 

Chinese gymnast Zhang Yang competes during the pommel horse test at the Mexican Gymnastics Open in Acapulco, south Mexico, Nov. 28, 2013. The three-day Mexican Gymnastics Open started on Nov. 28. (Xinhua/Jesus Espinosa)

Gymnast of the United States Joshua Dixon competes during the pommel horse test at the Mexican Gymnastics Open in Acapulco, south Mexico, Nov. 28, 2013. The three-day Mexican Gymnastics Open started on Nov. 28. (Xinhua/Jesus Espinosa)

Colombian gymnast Jossimar Calvo competes during the pommel horse test at the Mexican Gymnastics Open in Acapulco, south Mexico, Nov. 28, 2013. The three-day Mexican Gymnastics Open started on Nov. 28. (Xinhua/Jesus Espinosa)