Roger Federer trains for final tournament of career in London - in pictures

Roger Federer is hoping to bring the curtain down on his glittering career by teaming up with long-time rival Rafael Nadal at the Laver Cup in London on Friday.

The 20-time Grand Slam winner announced last week he intended to retire after the three-day tournament which starts on Friday at London's 02 arena.

Federer has been struggling with a knee problem that has required multiple surgeries. The Swiss great has been out of action since a quarter-final loss at Wimbledon to Poland's Hubert Hurkacz in 2021. He subsequently announced he needed more surgery on his knee having previously undergone two operations in 2020 that kept him out for more than a year.

The Swiss confirmed on Wednesday that the final match of his illustrious career will be in the doubles on Friday evening. Italian Matteo Berrettini, the first alternate for the tournament that pits Team Europe against Team World, will then take Federer's place over the weekend.

Federer does not yet know whether he will be able to link up with Nadal but said it would be the dream scenario.

"Of course, no doubt," Federer. "I mean, I think it could be quite a unique situation, you know, that if it were to happen."

Federer said he and Nadal, 36, had always maintained a respect for each other. "For us as well to go through a career that we both have had and to come out on the other side and being able to have a nice relationship I think is maybe a great message as well to not just tennis but sports and maybe even beyond," he said.

"For that reason I think it would be great. I don't know if it's going to happen, but I think it could be obviously a special moment."

Federer said he is now at peace with the decision to walk away, which comes a few weeks after Serena Williams