Moreover, his positive mindset is such that he believes he can still beat the world’s top players simply by “playing smart”, even if his body is still recovering from the illnesses he has suffered in the build-up to the French Open.
The next test of that theory comes in the shape of Russian chess-enthusiast Karen Khachanov, so perhaps it is a good thing that in coach Ivan Lendl, the world No1 has an unfathomable Czech mate to help him out whenever needed…
All jokes aside – especially that one – Khazanov, ranked 53rd in the world, is a very serious young man. Still only 21, he is already married and is studying online for a degree at the Russian University of Physical Education.
“Chess is one of my hobbies, yes,” he said. “I think it helps maybe. Maybe, but I never thought about it.
“No, just when I was young, like from 10 to 12, I was having chess classes. So I like to play chess in my free time.”
Andy Murray claims he feels more switched on at this year's French Open
Murray plays strategy games of his own to keep himself at the top of the sport. Not least of which, he identifies up-and-coming talents and gets a strategic look at them before it matters.
That is why, even though this will be their first competitive meeting, Murray has already practised with the Armenia-born player three times in the last couple of years. It has given him plenty of opportunity to work out Khachanov’s preferred defence.
It is all part of Murray’s standard preparations. He likes to gain as big an advantage mentally as he can over all his opponents before he even steps out onto court.
“In the matches here I’ve been more switched on,” he said. “I didn’t play perfect tennis in the first two rounds and I didn’t play perfectly against Juan Martin Del Potro.
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In the matches here I’ve been more switched on
“But it gives you a lot better chance of turning your form around and also winning matches just by playing smart because even when I’m not playing well I can still win matches against top players.
“I did it last year a bunch, you need to remember that as well. Providing you are willing to work hard and try to get through it.”
Certainly, the backhand lob he attempted in the third game of his clash with Del Potro on Saturday which bounced Murray’s side of the net was not the shot of the world’s best player.
But then there was the reach and control he showed to hit the winner against Martin Klizan in the second round; or the drop-shot and lob-control he defended in the first round against Andrey Kuznetsov that turned the game around. Those were classic Murray.
Next up for Andy Murray is world No 53 Karen Khachanov
So is his determination to prove a few people wrong.
“I’m very pleased and happy for myself that I’m playing the way I am now because a lot of people wouldn’t have thought that I would get to this stage or be playing the way that I did in the last few sets on Saturday,” he said. “So I’m happy I’ve managed to turn it around.
“The further that you go, the better you start to feel, the more confidence you get and you are in the second week of a slam, so anything is possible.
“Why not set the bar as high as possible? It’s better to say, ‘OK, I want to try and win the tournament’ and fall short and lose in the final than say, ‘I’m delighted at getting to the second week’ and then lose in the fourth round.
“I want to try and go as far as possible but there are no guarantees. If I play like I did in the last few sets today, then there is no reason why I can’t win a few more matches.”