London: Serena Williams won the latest instalment of her rivalry with sister Venus as the world number one eased into the Wimbledon quarter-finals with a 6-4, 6-3 victory on Monday.

Serena, bidding for her sixth Wimbledon title, took just 67 minutes to see off Venus on Centre Court and will play Victoria Azarenka or Belinda Bencic for a place in the semi-finals.