Aug. 9 (UPI) -- Tiger Woods withdrew from the Northern Trust on Friday, citing a mild oblique strain before the start of the second round.
Woods was unlikely to make the cut at Liberty National after he shot 75 in the first round. It marked the first time he has withdrawn in the middle of a tournament since the Dubai Desert Classic in February 2017, two months before he underwent spinal fusion surgery.
"Due to a mild oblique strain that led to pain and stiffness, I have to withdraw from the Northern Trust," Woods said in a statement. "I went for treatment early Friday morning, but unfortunately I'm still unable to compete.
"I'd like to thank the New Jersey and New York fans for their support and remain hopeful I can compete next week at the BMW Championship."
Woods withdrew three days before the beginning of the Arnold Palmer Invitational in March due to a neck strain. According to ESPN, he has cited back stiffness multiple times this summer. He arrived at the course Friday morning and received treatment from the tour's fitness staff, but decided he was unable to compete and left.
Dustin Johnson was 4-under par Friday to grab first place in the tournament. He shot 63 on Thursday and was one stroke behind former leader Troy Merritt after the first round.
Merritt, who tied the course record with a 9-under 62 on Thursday, was 1-under par in the second round and slid into a share of third place.
Jordan Spieth was red-hot Friday, finding 15 greens in regulation and sinking eight birdies against one bogey. He shot 67 in the first round and sits one stroke behind Johnson for the lead.