Li Xiaoxia, Guo Yue

China's Li Xiaoxia, left, and Guo Yue enjoy a moment on their way to the gold medal. (Sergei Grits/Associated Press)

China’s Li Xiaoxia, left, and Guo Yue enjoy a moment on their way to the gold medal. (Sergei Grits/Associated Press)

China’s Li Xiaoxia, right, and Guo Yue react in their doubles match against Japan in the women’s team table tennis gold medal matchs at the 2012 Summer Olympics, Tuesday, Aug. 7, 2012, in London. (AP Photo/Sergei Grits)