Andy Murray says he is "pain free" after hip surgery but that his chances of playing singles at Wimbledon this year are "less than 50%".
Murray had hip resurfacing surgery in January - which he said meant there was a "strong possibility" he would not be able to play professionally again.
The three-time Grand Slam champion said it was the only option if he wanted to return to the court competitively.
"The rehab is slow but going well," the 31-year-old Briton told BBC Sport.
"I want to continue playing, I said that in Australia. The issue is I don't know whether it's possible.