Davis Cup semi-final: Canada vs. Serbia

Canada is one tie away from reaching the Davis Cup final, but they face

their stiffest challenge yet against Serbia in this weekend’s best of

five semifinal.

France's Jo-Wilfried Tsonga returns the ball to Canada's Denis Shapovalov during their 2017 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2017. (AFP Photo/EDUARDO MUNOZ ALVAREZ)
Tennis - Tennis: Noah plumps for Tsonga, Pouille for Davis Cup semi against Serbia
France's Jo-Wilfried Tsonga returns the ball to Canada's Denis Shapovalov during their 2017 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2017. (AFP Photo/EDUARDO MUNOZ ALVAREZ)
Novak Djokovic reacts
Davis Cup - Djokovic plays for Serbia, Murray and Raonic miss Britain's tie with Canada
Novak Djokovic reacts
On your left, the Tennis Canada male doubles player of the year. On your right, the male player of the year, period.(AP Photo/ Marko Drobnjakovic)
Serbia Canada Davis Cup Tennis
On your left, the Tennis Canada male doubles player of the year. On your right, the male player of the year, period.(AP Photo/ Marko Drobnjakovic)
Canada fans react during the Davis Cup semifinal tennis match between Milos Raonic of Canada and Novak Djokovic of Serbia, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbia Canada Davis Cup Tennis
Canada fans react during the Davis Cup semifinal tennis match between Milos Raonic of Canada and Novak Djokovic of Serbia, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbia's Janko Tipsarevic returns a ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Marko Drobnjakovic)
Serbia's Janko Tipsarevic returns a ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Janko Tipsarevic returns a ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Marko Drobnjakovic)
Novak Djokovic of Serbia shouts with joy as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia shouts with joy as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia shouts with joy as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Canada's Vasek Pospisil, center back, is tended to by his teammates after his team had lost the Davis Cup semifinals to Serbia in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Canada's Vasek Pospisil, center back, is tended to by his teammates after his team had lost the Davis Cup semifinals to Serbia in Belgrade, Serbia, Sunday, Sept. 15, 2013
Canada's Vasek Pospisil, center back, is tended to by his teammates after his team had lost the Davis Cup semifinals to Serbia in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's national tennis team members celebrate after they had won their Davis Cup semifinals against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's national tennis team members celebrate after they had won their Davis Cup semifinals against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's national tennis team members celebrate after they had won their Davis Cup semifinals against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbian players celebrate Janko Tipsarevic 's victory after his Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbian players celebrate Janko Tipsarevic 's victory after his Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbian players celebrate Janko Tipsarevic 's victory after his Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbia's Janko Tipsarevic, 2nd left, and his teammates celebrate their victory against Canada's national tennis team at the Davis Cup semifinals in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Janko Tipsarevic, 2nd left, and his teammates celebrate their victory against Canada's national tennis team at the Davis Cup semifinals in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Janko Tipsarevic, 2nd left, and his teammates celebrate their victory against Canada's national tennis team at the Davis Cup semifinals in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Janko Tipsarevic falls to his knees as he celebrates his team's victory at the Davis Cup semifinal against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Marko Drobnjakovic)
Serbia's Janko Tipsarevic falls to his knees as he celebrates his team's victory at the Davis Cup semifinal against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Janko Tipsarevic falls to his knees as he celebrates his team's victory at the Davis Cup semifinal against Canada in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Marko Drobnjakovic)
Serbia's Janko Tipsarevic returns the ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Janko Tipsarevic returns the ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Janko Tipsarevic returns the ball to Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Janko Tipsarevic clinches his fist as he celebrates a point won against Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Janko Tipsarevic clinches his fist as he celebrates a point won against Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Janko Tipsarevic clinches his fist as he celebrates a point won against Canada's Vasek Pospisil during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Canada's Vasek Pospisil returns the ball to Serbia's Janko Tipsarevic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Canada's Vasek Pospisil returns the ball to Serbia's Janko Tipsarevic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Canada's Vasek Pospisil returns the ball to Serbia's Janko Tipsarevic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Janko Tipsarevic of Serbia celebrates a point won against Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia celebrates a point won against Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Janko Tipsarevic of Serbia celebrates a point won against Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia reacts during their Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia reacts during their Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Janko Tipsarevic of Serbia reacts during their Davis Cup semifinal tennis match against Vasek Pospisil of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Vasek Pospisil of Canada returns a ball to Janko Tipsarevic of Serbia during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Vasek Pospisil of Canada returns a ball to Janko Tipsarevic of Serbia during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Vasek Pospisil of Canada returns a ball to Janko Tipsarevic of Serbia during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Janko Tipsarevic of Serbia returns a ball to Vasek Pospisil of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbia's Novak Djokovic celebrates after having won a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic celebrates after having won a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic celebrates after having won a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic celebrates after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic celebrates after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic celebrates after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic lifts his hands in jubilation after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic lifts his hands in jubilation after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic lifts his hands in jubilation after winning the Davis Cup semifinals tennis match against Canada's Milos Raonic in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates as he wins his Davis Cup semifinal tennis match against Milos Raonic of Canada, in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Canada's Milos Raonic returns a ball to Serbia's Novak Djokovic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Canada's Milos Raonic returns a ball to Serbia's Novak Djokovic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Canada's Milos Raonic returns a ball to Serbia's Novak Djokovic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic returns the ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic returns the ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic returns the ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Novak Djokovic of Serbia returns a ball to Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia returns a ball to Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia returns a ball to Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Serbia's Novak Djokovic grimaces after losing a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic grimaces after losing a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic grimaces after losing a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic races to return a ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic races to return a ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic races to return a ball to Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic celebrates after winning a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Novak Djokovic celebrates after winning a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Serbia's Novak Djokovic celebrates after winning a point against Canada's Milos Raonic during their Davis Cup semifinals tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/ Marko Drobnjakovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013
Novak Djokovic of Serbia celebrates a point won against Milos Raonic of Canada during their Davis Cup semifinal tennis match in Belgrade, Serbia, Sunday, Sept. 15, 2013. (AP Photo/Darko Vojinovic)
Canada's Vasek Pospisil, right, and partner Daniel Nestor celebrate winning a point against Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinals tennis doubles match in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Vasek Pospisil, right, and partner Daniel Nestor celebrate winning a point against Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinals tennis doubles match in Belgrade, Serbia, Saturday, Sept. 14, 2013
Canada's Vasek Pospisil, right, and partner Daniel Nestor celebrate winning a point against Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinals tennis doubles match in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Vasek Pospisil, right, returns a ball as Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Vasek Pospisil, right, returns a ball as Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013
Canada's Vasek Pospisil, right, returns a ball as Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Vasek Pospisil, right, returns a ball as partner Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Vasek Pospisil, right, returns a ball as partner Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013
Canada's Vasek Pospisil, right, returns a ball as partner Daniel Nestor follows the action during their Davis Cup semifinal tennis doubles match against Serbia's Nenad Zimonjic and Ilija Bozoljac in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Canada's Daniel Nestor, right, and Vasek Pospisil celebrate winning a set from Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinal tennis double match in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/ Marko Drobnjakovic)
Canada's Daniel Nestor, right, and Vasek Pospisil celebrate winning a set from Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinal tennis double match in Belgrade, Serbia, Saturday, Sept. 14, 2013
Canada's Daniel Nestor, right, and Vasek Pospisil celebrate winning a set from Serbia's Nenad Zimonjic and Ilija Bozoljac during their Davis Cup semifinal tennis double match in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/ Marko Drobnjakovic)
Serbia's Ilija Bozoljac, left, returns a ball as partner Nenad Zimonjic follows the action during their Davis Cup semifinal tennis doubles match against Canada's Daniel Nestor and Vasek Pospisil in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)
Serbia's Ilija Bozoljac, left, returns a ball as partner Nenad Zimonjic follows the action during their Davis Cup semifinal tennis doubles match against Canada's Daniel Nestor and Vasek Pospisil in Belgrade, Serbia, Saturday, Sept. 14, 2013
Serbia's Ilija Bozoljac, left, returns a ball as partner Nenad Zimonjic follows the action during their Davis Cup semifinal tennis doubles match against Canada's Daniel Nestor and Vasek Pospisil in Belgrade, Serbia, Saturday, Sept. 14, 2013. (AP Photo/Marko Drobnjakovic)

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