Tiger Woods will not play again this season.
US PGA Championship officials said overnight he had withdrawn from the year's final major next week and agent Mark Steinberg said Woods would not return until 2016/17.
Woods indicated in June he wasn't sure whether he would play at all in 2016. He has been rehabbing from back surgery since last year and has undergone three back surgeries since March 2014.
Steinberg said Woods was making progress in his rehab, but that it didn't make sense to play this season.
He said they would assess his recovery in the American autumn.
When Woods pulled out of The Open at Royal Troon, it marked the first time in his professional career that he had missed three straight majors. Now it will be four.
Woods last played a PGA Tour event in August 2015, when he finished tied for 10th at the Wyndham Championship.
The 2015-16 regular season includes three more events and then the four-event playoffs, culminating with the Tour Championship on the last weekend in September.