Roger Federer hopes he can grace Centre Court at Wimbledon one last time as he bids to return from the knee injury he suffered last year.

The 20-time grand slam champion has not played since undergoing knee surgery after a straight-sets defeat to Hubert Hurkacz in the quarter-finals at SW19 last July, having also missed much of the 2020 season with a similar injury.

But Federer, an eight-time Wimbledon champion, has repeatedly ruled out retiring and said last month he intends to make an ATP tour comeback in 2023.

Speaking alongside a swathe of former Wimbledon champions at a ceremony marking 100 years since the opening of Centre Court, the 40-year-old said he hopes to extend his long association with the tournament when he returns.

"I've been lucky enough to play a lot of matches on this court, it feels awkward to be here today in a different type of role, but it's great to be here with all the other champions," he said.

"This court has given me my biggest wins, my biggest losses, one of my highlights of course was in 2001, walking out here with Pete Sampras [for a memorable fourth-round match], who inspired a lot of us to play, to try to be successful and represent the sport well, I hope I did that.

"I hope I can come back like you said, one more time."

Federer's injury woes have reduced him to featuring at just three of the last 10 grand slams, and he revealed his recovery had taken longer than he anticipated.

"Of course, I've missed being here, I would have loved to be here," he added.

"I knew walking out here last year [after his exit] it was going to be a tough year ahead.

"Maybe I didn't think it was going to take me this long to come back, but the knee has been rough on me.

"But I've been happy, it's been a good year, regardless of tennis."