JUDY Murray admits her son Andy’s painstaking rehabilitation from hip surgery has been a source of frustration but called for patience as he endeavours to prove his fitness for Wimbledon.

The 31-year-old’s name appeared on the entry lists for SW19 yesterday, albeit at the outlandish ranking of No 45, just 12 months after he reached the quarter finals as World No 1 before limping out in five sets to Sam Querrey.

Scheduled to return in Den Bosch on June 11, that is still his last competitive appearance.

“I can’t tell you anything other than he is hoping to be ready for the grass court season and he will come back when he is 100% ready,” Judy told Herald Sport, at the David Lloyd club in Glasgow’s West End.

“You can’t put an exact time on any injury, especially a long term one. It really is a case of ‘wait and see’. For any athlete, injury is part of the life, but a long-term injury is a real challenge to get your head around,” she added.

“Andy has rehabbed a few fairly serious injuries in his life and has got incredible resilience. But it is frustrating - frustrating for him and for everybody around him. We all just need to have patience.”