Sir Andy Murray is likely to miss Wimbledon this summer and therefore may have played his final match at SW19.
The 37-year-old - who is a two-time men's singles champion at the All England Club - had been expected to bid farewell to Wimbledon after this year's Championships.
However, according to The Telegraph, Murray has been ruled out of the tournament after undergoing an operation on a spinal cyst.
His recovery time following the operation is said to be around six weeks, making him a major doubt for the 2024 Olympic Games in Paris.
Mail Sport understands Murray's team is expected to make an official announcement on his condition on Monday.
Former world No 1 Andy Murray will not play at Wimbledon this summer due to a back injury
Double Olympic champion Murray is also now a major doubt for the 2024 Games in Paris
Murray entered Queen's this week in a bid to prepare for Wimbledon.
He kicked off with a 6-3 3-6 6-3 win over Alexei Popyrin on Tuesday. But he then retired during the first set of his round of 16 clash with Jordan Thompson the following day.
Murray explained after that abandoned match that nerve pain he had been experiencing in his back spread to his right leg just before he came on court against Thompson, effectively immobilising him.
The Scot said: 'I had loss of power in my right leg. So loss of motor control, had no coordination. Yeah, couldn't move.'
On his treatment options, he added at the time: 'I didn't necessarily get my right side of my back treated after the French Open, because I have, like all tennis players, we have degenerative joints and stuff in the back, but it's all predominantly been left-sided for me for pretty much my whole career. I have never had too many issues with the right side.
'So maybe there is something that can be done between now and then (Wimbledon), you know, to help the right side.'
Former British No 1 John Lloyd quipped on the BBC after Murray's withdrawal against Thompson: 'He'll do everything he can to play at Wimbledon, even if it's on a walking stick.'
Murray retired against Jordan Thompson at Queen's after just five games on Wednesday
Murray won Wimbledon in 2013 and 2016 but has not gone beyond the third round since 2017
Two of Murray's three Grand Slam titles came at Wimbledon, in 2013 and 2016. His other arrived in 2012 when he won the US Open.
But Murray has not progressed beyond the third round of any Grand Slam singles event since 2017.