Roger Federer doesn’t think people should read too much into Andy Murray’s lacklustre performance the last time the two Wimbledon semi-finalists met.

The British No 1 was thrashed 6-0, 6-1 by the Swiss at the ATP World Tour Finals at London’s O2 Arena in November in a one-sided affair which only lasted 56 minutes and left Murray embarrassed in Greenwich.

They will lock horns for the first time since that match in Friday’s showdown at the All England Club but Federer is expecting a different player to take to Centre Court to the one that flopped last year.

“I thought World Tour Finals, he came in tired,” Federer explained.

“You know, he had won three tournaments back‑to‑back‑to‑back.

“He left everything out there, making the World Tour Finals. I think when I played him, he was a bit cooked, to be honest.

Andy Murray's quarter-final win over Vasek Pospisil in pictures:

“I played a great match, but it was not the Andy that usually comes up and shows up.”

The pair have not played each other on grass since Murray beat the Grand Slam legend at London 2012 to seal Gold for Great Britain.

Federer had triumphed over the Scot weeks prior to the Olympics to lift the Wimbledon title and, despite losing in the Olympic final, the 33-year-old has fond memories of that summer.

“It brings back those memories of a great summer for both of us,” he said. “ Yeah, just all the matches we've played against one another.

“More importantly for me, I'm very happy to be in the semis again.

“The road is long getting here. But still I feel like I'm fresh and I've got energy left in the tank for hopefully a great match with Andy and then we'll see.

“I think he was going for his first Wimbledon in '12. So obviously it was always going to be tough. He had lost some majors before that.

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“But I knew it was going to be difficult for me, too, because we were both playing very well. Very much at home on Centre Court, on grass. We both play very well.

"Then the Olympics was just a different vibe altogether. It was I guess tougher to make the finals because it was best‑of‑three, not best‑of‑five getting to the finals.

“Once there, with the epic I had against del Potro, I was just a bit weathered, you know, from that match, but very relieved that I was going to make a medal for Switzerland.

“I thought Andy played as good of a final as you can play. Never really had a chance. Don't remember even if I had breakpoints or chances in the second. Honestly, it all went by so quickly.

“He was just better. That was it. I was happy that I played still a good Olympics after all. But there's nothing I could really do.”

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Conchita Martinez clutches the trophy. But which tennis star is giving her a cuddle?
Martina Navratilova and Conchita Martinez