Shuko Aoyama Pictures
WASHINGTON, DC - JULY 21: Risa Ozaki of Japan (partner of Shuko Aoyama of Japan) serves to Shilin Xu of China and Nicole Melichar of the United States of America during day 4 of the Citi Open at Rock Creek Tennis Center on July 21, 2016 in Washington, DC. (Photo by Matt Hazlett/Getty Images)