Canada`s Graham DeLaet has withdrawn from the 97th PGA Championship because of a left thumb injury, tournament officials announced on Monday.
DeLaet suffered the injury at the Canadian Open last month and missed last week`s World Golf Championships event as a result.
"So disappointed that I can`t tee it up at the PGA," DeLaet said in a Twitter posting. "Need some time for my body to heal. I plan on being back and ready for a playoff run."
The season-ending US PGA Tour playoffs begin two weeks after the year`s final major tournament, which begins Thursday at Whistling Straits.
DeLaet pulling out opened the door for American Sean O`Hair to enter the field. It will be O`Hair`s first major start since the 2012 PGA Championship and his ninth appearance in the event, his most at any major.
O`Hair last won at the 2011 Canadian Open although he was in a playoff last March at the Valspar Championship but lost to reigning Masters and US Open champion Jordan Spieth.