Judy Murray admits she fears her son Andy may be forced into quitting tennis.
The Scot has had an injury-plagued season, notably at Wimbledon where he was hampered by a hip problem during the build-up and throughout the tournament.
Prior to that, he suffered with shingles at the start of the campaign, as well as elbow problems.
His quarter-final exit to Sam Querrey last month was his most recent appearance on a tennis court, having pulled out of both the Montreal and Cincinnati Masters as he nurses the injury ahead of the US Open at Flushing Meadows.
Murray will be replaced by Rafael Nadal at the top of the ATP world rankings by next week - another blow to the 30-year-old.
It is hoped that Murray will recover in time for US Open, the final grand slam of the year, which he won in 2012.
However, his mother and former British Fed Cup captain, Judy, is concerned about his welfare.
"The thing that worries me now is that Andy may not play for much longer," she said, as per Tennis World USA.
"He has been around for 12 years playing at the top of the game."
Judy's thoughts echo those of Tim Henman, who encouraged Murray to follow Roger Federer and Novak Djokovic and take a break from the game to recover.
Djokovic has ruled himself out for the remainder of the year, while Federer avoided the clay court season to focus on grass and reaped the rewards by winning Wimbledon without dropping a set.
And Henman said that Murray must make sure he is fit and ready to go before returning to action.
"You’re not going to take a break for the hell of it," he stated.
"Federer needed to take that break because he’d had a knee operation and his knee wasn’t right.
"At the end of the day the most important thing is your health and, you can’t compete at the top of the game unless you’re 100 per cent healthy or extremely close to it.
"Murray’s had problems with his hip. I know that he’s having a lot of tests at the moment and scans and seeing specialists to try and get to the bottom of that. And hopefully he can be back competing soon."
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