London: Serena Williams has called on fans to support her sister Venus when the two five-time Wimbledon champions meet in an emotional fourth round clash on Monday.


American Venus Williams plays a backhand in her third round match against Aleksandra Krunic of Serbia at the Wimbledon Lawn Tennis Championships in London on Friday (Pic/Getty Images). INSET: Serena Williams 

The sisters, who have 27 Grand Slam titles between them, will be on opposing sides of the net for the sixth time at Wimbledon and for the 26th time in their careers. Venus, 35, thrashed Aleksandra Krunic to reach the last 16, while Serena, 33, had to survive an almighty scare against Britain's Heather Watson before guaranteeing the first all-Williams tie at Wimbledon since 2009.