A scan has revealed that the back problem Rory McIlroy had at the Players Championship was a recurrence of his injury from earlier this year.
McIlroy said yesterday evening that an MRI scan had revealed "no new injury, rather a low grade response to the rib joint I injured earlier in the year.
"As of now I am still entered into the BMW PGA Championship."
The Ulsterman said he would decide early next week whether he was "in a position to compete" at Wentworth. The European Tour's flagship event takes place from May 25-28.
The World No.2 revealed on Friday that he was feeling discomfort in his back and he went on to finish in a share of 35th place, 12 shots behind winner Kim Si-Woo of South Korea.
Ian Poulter, meanwhile, is looking forward to planning a "very long schedule" after overcoming injury problems in "the toughest stretch" of his career.
Poulter, 41, was runner-up at the Players Championship after missing four months last year with a foot injury. He said: "It's been miserable, really hard - but we're getting there."