Andy Murray of Britain celebrates after he plays a return to Jo-Wilfried Tsonga of France during their singles tennis match at the ATP World Tour Finals in London Friday, Nov. 9, 2012. (AP Photo/Sang Tan)

Associated Press
Andy Murray of Britain celebrates after he plays a return to Jo-Wilfried Tsonga of France during their singles tennis match at the ATP World Tour Finals in London Friday, Nov. 9, 2012. (AP Photo/Sang Tan)
Andy Murray of Britain celebrates after he plays a return to Jo-Wilfried Tsonga of France during their singles tennis match at the ATP World Tour Finals in London Friday, Nov. 9, 2012. (AP Photo/Sang Tan)