Wimbledon 2015: Serena Williams beats sister Venus Williams to reach last eight

Serena Williams beat her elder sister Venus in a Grand Slam match for the first time in six years to reach the Wimbledon quarter-finals. The world number one came through 6-4 6-3 in one hour and eight minutes on Centre Court.

Serena, two years younger at 33, has now won 15 of the American siblings' 26 professional contests.

She remains on course to complete the third leg of a possible calendar Grand Slam.