Even if he's healthy enough to play at Wimbledon, his lack of preparation on grass prior to the event is a concern.
World number one Andy Murray has pulled out of his first exhibition match at Hurlingham Club with a sore hip.
A third Wimbledon title will put Murray in a group that includes Briton Fred Perry, world number four Novak Djokovic and German great Boris Becker.
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Murray was due to take on Frenchman Lucas Pouille in the tournament in the first match, however, on Tuesday morning it was announced that he would not take to the court because his hip was "a bit sore", leaving his fans tensed.
Ivan Lendl allayed any worry Andy Murray would be unable to defend his Wimbledon title, telling reporters the 2016 champion should return to practice Friday.
Murray has played in one tournament since losing to Stan Wawrinka in the French Open semifinals.
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Only two weeks after that Dubai success, Murray was forced to withdraw from the Miami Open just before it started due to a right elbow injury.
But he did admit that Murray has not had enough practise, saying: "The first match on grass is always tricky".
Despite a year which has seen him struggle with form, illness and injury, the Scot is set to be seeded No1 at the Wimbledon championships when the rankings are confirmed today.
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This is an "ultra-cautious" decision according to Murray's team, and it's expected he will play his other scheduled match at the Hurlingham Club on Friday. "If I play like that, I certainly won't win Wimbledon".