Maria Sharapova suffered a shock exit from Wimbledon on Monday as Germany's Sabine Lisicki avenged last year's semi-final defeat with a 6-4, 6-3 fourth round victory over the world number one.

Sharapova had romped to a straight sets win over Lisicki in last year's semi-final at the All England Club, but the top seed was completely out-played by the 15th seed this time.