It was a disappointing day for Britons at Wimbledon after the “MuRena” dream team crashed out – leaving just two virtual unknowns flying the flag.
The duo were philosophical in defeat, however.
Sir Andy recently underwent major hip surgery, while Williams is also recovering from injury.
He said: “We’re celebrating the fact that we’re feeling better – we want to just continue to do better.”
The three big names in the men’s game – Rafael Nadal, Roger Federer and Novak Djokovic – made it through to the semi-finals, along with Spaniard Roberto Bautista Agut.
Success at Wimbledon was a mixed blessing for Agut – it meant he had to miss his planned stag do in Ibiza this week.
Other big names included Dame Shirley Bassey, Dame Twiggy Lawson, Sir Cliff Richard and US Vogue editor Anna Wintour.
Wednesday will mark the beginning of the wheelchair tournament.
He said: “If me and Djokovic played in chairs I think I would win. He can serve in the chair but he can’t move.
“When he’s out on the court he can crunch it and he’s like ‘look at that forehand’, but I’m like ‘mate, I’m hitting the ball to you, you’re not moving, you’re just sat’.”
They will follow Elina Svitolina versus Simona Halep on Centre Court.