Andy Murray plays BMW PGA Championship pro-am with father William as caddy

Andy Murray found himself at a spot that's popular with many newly-retired folks this week: the golf course. The Scot, who officially said goodbye to tennis six weeks ago at the Paris Olympics, was one of the stars of a celebrity pro-am event ahead of the BMW PGA Championship, an event on the DP World Tour.

With his father William serving as his caddy, Murray was paired with fellow Scot Robert MacIntyre, who this year claimed his first PGA Tour win, England cricketer Jimmy Anderson, and Strictly Come Dancing judge Anton Du Beke for the pro-am, which kicked off the PGA European Tour tournament that officially began on Thursday at the Wentworth Club in Surrey.

Despite the group finishing 13 shots behind the leaders, silver medalist Tommy Fleetwood's team that included actor Tom Holland and his brothers, Murray called the experience "brilliant" in more way than one, though he did confess that he "couldn't really feel my arms and legs" at the start.

"It's a different sort of nerves because you are comfortable in the tennis environment. I'm not thinking I'm going to walk out on the tennis court and forget how to hit the ball. You just want to perform well," Murray said.

"Whereas here, you're sort of nervous about ... there's people standing like five metres away from where I'm driving, and I'm like, 'I'm useless at this game.' You just want to try and keep the ball in play and don't mess up too much."

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Ahead of the pro-am, the former ATP No. 1 was all smiles on the course with former top-ranked golfer Rory McIlroy, with the Scot saying that he'll be able to bring his seven handicap down to scratch in "a couple of years."

But no matter how poorly Murray rates his golf game, MacIntyre was quick to praise one of his "sporting heroes" for all that he achieved in his tennis career.

"If I achieve half of what he achieved in his sport, then I'll have overachieved to be honest with you," MacIntyre said, calling Murray "a sporting idol for many people."