Williams faces Azarenka semi-final

Serena Williams and Victoria Azarenka set up a mouthwatering semi-final clash at Wimbledon as both women powered through their quarter-final matches under the Centre Court roof today.

Williams sent defending champion Petra Kvitova packing in one the most eagerly-anticipated clashes of the tournament so far before second seed Azarenka dispatched Austrian Tamira Paszek in straight sets.