"David deserves to be No 4 because of his consistency," Murray said. "He's also started to play better in the big events in the last few years. He made the quarters of Wimbledon, semis of the French Open, semis of the Australian Open, semis of the US Open. It will be a very tough match."When you play against him the points tend to be very physical because he moves extremely well. Ferrer has a great attitude on the court. He fights for every single point. You're going to have to do more running than against some players, who at 30-0 or 40-0 down may just miss or almost give you a point. It's not like that with him. He plays every single point hard."