Wimbledon 2015: Serena Williams powers past Victoria Azarenka

Watch highlights as Serena Williams wins an enthralling Wimbledon quarter-final against Victoria Azarenka.

The American hit 17 aces and 46 winners to overcome Azarenka 3-6 6-2 6-3 in an intense contest that lasted two hours and five minutes on Centre Court.

Williams will go on to face Russian fourth seed Maria Sharapova in the semi-finals on Thursday.

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