Tiger Woods announced that he is withdrawing from the AT&T National in Washington D.C. due to an elbow strain. Woods recently shot a career-worse 13 over par at the US Open and was seen grimancing throughout the tournament. 

Via CBSSports:

"I was examined after I returned home from the US Open, and the doctors determined I have a left elbow strain," Woods saidI 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."

This marks the sixth straight season in which Tiger has picked up some sort of injury, though he has typically dealt with knee and achilles problems.