Murray received a wildcard for Wimbledon in 2005 when he was just 18 and he took the tournament by storm.
The Scot made the third round and went two sets up on David Nalbandian before suffering with cramp and fatigue, and then crashing out.
Now Murray, who doesn’t touch alcohol and sticks to a strict diet, is one of the players with the best fitness on tour – not that it’s always been like that.
The two-time champion said: “When I first played at Wimbledon I ate pizza before my matches and was staying in someone’s basement, so I’ve come a pretty long way.
“This is the tournament, and Centre Court is the place, where I’ve played my best tennis, and I guess that consistency proves it.
“I lost that first quarter-final in 2008 in straight sets to Rafael Nadal, and I must admit I don’t remember that much about it now. I must have played about 600 matches since then and it’s the very earliest ones that have really stuck in my mind.
“I can vividly remember specific moments of my second-round match against Radek Stepanek, and the third-round match against David Nalbandian on Centre Court.
“I’ve actually watched that back quite a few times – I don’t know why.
“I know I was nervous but I just had no expectation to do well, so it was completely different to the kind of nerves I get now.
“When I went to speak to the press I just said whatever I was thinking, whatever was on my mind. There was no filter, no concept of everything else that goes on at an event this big.
“Of course I knew it was important but in truth I was not really aware of how big a deal Wimbledon was, and how much focus there was on this event. I was so young, I just wasn’t aware of it. I’d been playing tiny events just a few weeks before that.
“And, yes, I was enjoying pizza for dinner before facing some of the best players in the world.
“I do remember fairly clearly that I didn’t eat well. With things like diet, we just didn’t know any better and I was very naive.”