Novak Djokovic of Serbia reacts after winning his men's singles quarterfinals match against Tomas Berdych of Czech Republic at 2013 Australian Open tennis tournament in Melbourne, Australia, January 22, 2013. Novak Djokovic won 3-1. (Xinhua/Bai Xue)
Novak Djokovic of Serbia reacts after winning his men's singles quarterfinals match against Tomas Berdych of Czech Republic at 2013 Australian Open tennis tournament in Melbourne, Australia, January 22, 2013. Novak Djokovic won 3-1. (Xinhua/Bai Xue)
Novak Djokovic of Serbia reacts after winning his men's singles quarterfinals match against Tomas Berdych of Czech Republic at 2013 Australian Open tennis tournament in Melbourne, Australia, January 22, 2013. Novak Djokovic won 3-1. (Xinhua/Bai Xue)
Novak Djokovic of Serbia reacts after winning his men's singles quarterfinals match against Tomas Berdych of Czech Republic at 2013 Australian Open tennis tournament in Melbourne, Australia, January 22, 2013. Novak Djokovic won 3-1. (Xinhua/Bai Xue)