David Toms, a past winner of the John Deere Classic, was forced to withdraw after his first nine holes in Thursday’s first round with a hip injury.
The injury will also keep Toms, who won the Crowne Plaza Invitational at Colonial earlier this year, out of the British Open.
“Not a great day,” Toms tweeted when announcing the news.
Robert Garrigus, who earlier this month finished tied for third at the U.S. Open, also withdrew in the middle of his round with a back injury.
Toms, whose first PGA TOUR win came in 1997 in this event, started his round off the 10th tee. He was 1 over through nine holes.
On Wednesday, Toms had mentioned that his hip was bothering him.
“I've got a bad hip right now, and just to walk around this golf course, it's quite a feat just to get from green to tee and to get through it,” he said.
Garrigus was 5 over through his first nine holes. He is scheduled to fill the spot vacated by Tim Clark in next week’s British Open.