Djokovic into Wimbledon semi-finals

Serbia's Novak Djokovic serves against Czech Republic's Tomas Berdych during their quarter-final match at the Wimbledon Championships in southwest London, on July 3, 2013. Djokovic reached his 13th consecutive Grand Slam semi-final with a 7-6 (7/5), 6-4, 6-3 win over Berdych. (AFP)

LONDON (AFP) – World number one Novak Djokovic reached his 13th consecutive Grand Slam semi-final on Wednesday with a 7-6 (7/5), 6-4, 6-3 win over Czech seventh seed Tomas Berdych.

Djokovic, the 2011 champion, will face Juan Martin del Potro, the Argentine eighth seed, for a place in Sunday's final.