Andy Murray has revealed he has already lost 11 pounds since retiring from tennis last month. The former world No.1 was an obsessive trainer who returned to the sport after undergoing a hip resurfacing operation in 2019.

The Scot, 37, played his last tournament at the Olympics last month - and reappeared looking leaner and slimmer at the Celebrity Pro-Am before the BMW PGA.

And Murray said at Wentworth: “I haven't been to the gym for five weeks. I said to my wife, I was like, Look, I'm going to make sure when I stop, I'm going to make sure I stay in good shape.

“And she said: ‘Oh, if you're just going to go and play golf, I don't want that’. I was : ‘No, no, I'll get myself in the gym, make sure I stay in shape’.

“I went to the gym three of the first four days after I stopped, worked really hard, and then went up to Scotland for a couple of days for a holiday, and haven't been back since.

“It's been five weeks I've not been in the gym, longest ever for me probably. I don't know if it's like appetite, if I'm not eating as much.

“But we obviously have like loads of the sport drinks have got lot of calories in them, and I only really drink water and coffee now.

“So I don't know, I think just less calories and probably loss of muscle. I've lost about 11, 12 pounds. It's a lot. I was expecting the opposite to happen. It's about five kilos, yeah.”

Murray teamed up with fellow Scot and Ryder Cup star Bob MacIntyre, Jimmy Anderson and Anton Du Beke - the former Strictly Come Dancing partner of his mum Judy.

Asked if he will ever appear in the BBC dance show, the Scot laughed: “That's highly unlikely. Don't know what my brother (Jamie) will be doing. But it certainly won't be me, that's for sure.”

Quizzed on his ambition to become a scratch golfer, he added it will take “a couple years probably” and said: “I'm obviously getting to practise a lot more than the average person.

“I obviously played a bit when I was younger, and if I can get the right sort of lessons and practise the right things, then yeah, I've got a chance of doing that I think in a couple years.

“Will you the lessons have made a huge difference. That's been the most important thing for me. I used to go down to the range and hit lots of balls, and I could hit a few good ones.

“But if you have a fundamental flaw in your swing or what you're doing, it doesn't matter how many balls you hit on the range. So getting lessons and practising those things is helping.”