Tiger Woods withdraws on the 12th hole of Farmers Insurance

Tiger Woods withdrew from the Farmers Insurance Open while playing the 12th hole of his round after his back gave him trouble.

"It tightened up during the suspensions and it never loosened back up again," said Woods, alluding to fog delays before the round began. "It just got progressively tighter.

" … It's frustrating that it started shutting down like that. I was ready to go. I had a good warm up session."

Woods said the pain started while he was standing on the putting green waiting out the fog.

"Then I got cold standing out there and everything started deactivating again. It's frustrating that I just can't stay active. That's just the way it is.

"We usually don't have to wait like this back home practicing. You can keep going and going. My glutes are shutting off and they don't activate."

Seeming a bit uncomfortable the entire round, Woods was taken by golf cart into the clubhouse without finishing the 12th hole. His last hole was a double-bogey on No. 2, the 11th hole of the day for him.