Serena Williams defeats Na Li at Wimbledon

Question

Serena Williams is through to the semi-finals at Wimbledon after defeating Na Li 7-5, 6-3 in the quarters. With sister Venus and Kim Clijsters knocked out of the competition earlier in the day, the defending champion is now well-placed to win back-to-back titles at the All England Club. Match report at http://blogs.bettor.com/Serena-Williams-wins-as-seeds-tumble-at-Wimbledon-a14201