Novak Djokovic is learning to expect the unexpected at Wimbledon but is making sure he keeps his own game under control.

For the first time in his career, Rafael Nadal will wake today with a first-round loss at a grand slam against his name, but he is adamant that it will not be long before he is back to put that right.

Rafael Nadal’s knees were given a stern test as he was pushed all the way by Argentina’s Carlos Berlocq before booking his place in the semi-finals of the Brasil Open.