Tiger Woods acknowledges the gallery on the 14th green of the north course during the first round of the Farmers Insurance Open at Torrey Pines Golf Course on February 5, 2015 in La Jolla, California

Tiger Woods acknowledges the gallery on the 14th green of the north course during the first round of the Farmers Insurance Open at Torrey Pines Golf Course on February 5, 2015 in La Jolla, California

*Tiger Woods said his golf is not acceptable for the PGA Tour and he will step away from the sport indefinitely.

Woods shot a career-worst 82 to miss the cut in the Phoenix Open by 12 shots. He was playing poorly at Torrey Pines when he withdrew after 11 holes because of tightness in his back.

Woods said Wednesday on his website that the injury is not related to the back surgery he had last spring. He said he is having physical therapy every day and feeling better.

“Right now, I need a lot of work on my game, and to still spend time with the people that are important to me,” he said. “My play, and scores, are not acceptable for tournament golf. Like I’ve said, I enter a tournament to compete at the highest level, and when I think I’m ready, I’ll be back.”

His world ranking — 62nd — is the lowest since he turned professional in 1996.