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Andy Murray may not feature in Great Britain's Davis Cup tie against Serbia due to the clash taking place on clay.
Along with the French Open, Wimbledon and the US Open, Murray will compete in the Olympic Games in Rio de Janeiro in the coming months.
The Scot, having last year been largely responsible for Britain securing its first Davis Cup triumph in 79 years, may not take part in his country's quarter-final clash away to Serbia.
Asked if the decision to play on clay will affect his decision, Murray answered: "Potentially. I need to see how my body is first.
"I leave now to go away next week to Madrid, then it's pretty much full on through until the Olympics for the next few months.
"(It is) a number of surface changes in a very short space of time, so you never know how the body is going to react or how it's going to pull up after those changes.
"I'll just have to see how my body is. Hopefully I'll be fine, but it's going to be a tough few months, and I think all the players are aware of that right now.
“The more surface changes that are put in there makes it that bit more tricky."