Vasek Pospisil of Canada (L) hits a return as his partner Jack Sock of the US (R) looks on, during the men's doubles final match against Daniel Nestor of Canada and Edouard Roger-Vasselin of France at the China Open tennis tournament in Beijing on October 11, 2015. AFP PHOTO / GOH CHAI HIN        (Photo credit should read GOH CHAI HIN/AFP/Getty Images)