London: Nine Grand Slam champions line-up on Wimbledon's manic Monday with places in the quarter-finals at stake and most interest centred on the latest chapter in the three-decade long Williams sisters story.

The 26th clash between Serena and Venus, who have won the Wimbledon title five times each, will be the first at the All England Club since the 2009 final. They will dominate early Centre Court action before the likes of Novak Djokovic, Roger Federer and Andy Murray become the focus of the day. Serena holds the US, Australian and French Open titles and her record in 2015 reads 35 wins against just one loss.