Novak Djokovic of Serbia celebrates victory after the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia hits a return during the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia celebrates victory after the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Tomas Berdych of the Czech Republic hits a return during the quarterfinal of men's singles against Novak Djokovic of Serbia on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia serves during the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia reacts during the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia celebrates a point during the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
Novak Djokovic of Serbia hits a return during the quarterfinal of men's singles against Tomas Berdych of the Czech Republic on day 9 of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, Britain, on July 3, 2013. Djokovic won 3-0. (Xinhua/Yin Gang)
