Andy Murray said Sunday it would be "naive" and "silly" to think he will ever return to being the player that surged to number one in the world.
The 32-year-old Briton, a three-time Grand Slam champion, is on a long comeback trail after undergoing career-saving hip resurfacing surgery in January.
He is now free of pain, and this week will compete at the Zhuhai Championships -- the first of three tournaments he is scheduled to play in China in the next three weeks.
Murray believes this crucial period in his rehabilitation will provide some answers as to how good he can be again -- but is under no illusions about the longer term.
"Honestly, I'm not expecting to get back to my very best," Murray, now ranked 413 in the world, told AFP in Zhuhai.
"I think it would be probably a bit naive and silly to think that would be the case.
More From This Section
"I do feel like tennis-wise I can still compete at the highest level in terms of my skill, it's just whether physically I can get to a high enough level to be competitive right at the top.
"I've still got quite a ways to go in that respect, I don't know exactly where the end point is.
"Probably until I stop improving, I'll then have to make a call (about his future).
"If my improvement stopped today, I probably wouldn't be happy playing at the level I'm at just now."
- No fears of retirement - ==========================
"So I am looking forward to when I do stop playing eventually. "But while I am not in pain just now, I will try to keep playing tennis because I enjoy it."
- 'Not enjoying it' -
=====================