"I have to listen (to the doctors) and be patient, and I will come back when my knee is well," the third-ranked Spaniard said Friday from his home island of Mallorca. "The best thing I can do now is to stop, get fully well, accept the situation and work hard to come back better."

The 26-year-old has not played since being knocked out of the second round of Wimbledon back in June, having to pass on the chance to defend his Olympic gold in London due to the injury as well. He would like to return to play for Spain in the upcoming Davis Cup in September, but made no promises.

"If (my knee) is well in time for the Davis Cup and the captain wants me, I will be happy to be there," he said. "It would be exciting for me and a great moment to return. If not, then I will have to wait a little longer."

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