Viktor Troicki of Serbia returns a shot during the Men's singles quarter final mach against Juan Martin Del Potro of Argentina on day six of 2017 ATP...
{"Image ImageDescription": "SHANGHAI, CHINA - OCTOBER 13:  Viktor Troicki of Serbia returns a shot during the Men's singles quarter final mach against Juan Martin Del Potro of Argentina on day six of 2017 ATP Shanghai Rolex Masters at Qizhong Stadium on October 13, 2017 in Shanghai, China.  (Photo by Lintao Zhang/Getty Images)", "Image Copyright": "2017 Getty Images"}