Novak Djokovic is through to the semi-finals at Wimbledon.

The world number one beat Tomas Berdych in straight sets 7-6 6-4 6-3 to reach his 13th consecutive Grand Slam semi.

Juan Martin Del Potro is also into the last four after defeating David Ferrer in straight sets.

Del Potro overcame a nasty fall in the first game to progress 6-2 6-4 7-6.

Andy Murray's quarter-final against Spain's Fernando Verdasco has just got under way.