Serena, 33 and already the Australian and French Open champion this year, said Briton Heather Watson should have won their third-round battle, while also tipping Venus as the more in-form of the two five-time Wimbledon champions, whose 26th meeting will launch Wimbledon’s second week.
“Serena’s playing for history; Venus isn’t going to have that many more opportunities here,” she said.
Fifth seed Caroline Wozniacki must beat Spain’s Garbine Muguruza to reach her first Wimbledon quarter-final in a packed fourth-round line-up. Maria Sharapova takes on Zarina Diyas, while fresh from dispatching defending champion Petra Kvitova, Jelena Jankovic meets Agnieska Radwanska.
The men’s schedule sees Wimbledon showman Nick Kyrgios face Richard Gasquet, their tussle topping the bill on Court Two and possible the day, with both men playing flamboyant, crowd-pleasing tennis.
Roger Federer plays Roberto Bautista Agut while Andy Murray tackles Ivo Karlovic. Kevin Anderson faces defending champion Novak Djokovic on Court One, following French Open winner Stan Wawrinka’s meeting with David Goffin.