Tiger Woods will be unable to defend his championship at next week's AT&T National due to a strain of his left elbow.
The world's No. 1 golfer made the announcement Wednesday on his personal website, revealing he has been advised to rest until the British Open.
"I was examined after I returned home from the U.S. Open, and the doctors determined I have a left elbow strain," Woods said in a statement. "I have been advised to take a few weeks off, rest and undergo treatment. I'll be ready to go for the British Open, and I'm looking forward to playing at Muirfield.
"I would like to extend my regrets to AT&T, our sponsors and the fans in the Washington, D.C., area. The AT&T National means a lot to me and my foundation. It's especially difficult not defending at my own tournament. It's going to be a great event, and I look forward to being there to provide my support."
Woods said he had been bothered by some minor discomfort before the U.S. Open Championship. However, he aggravated the injury last week at Merion, where finished in a tie for 32nd at 13-over for his highest score in a major championship as a professional.
The British Open is scheduled for July 18-21.