Tiger Woods’s hopes of a first PGA Tour win in two years dwindled following a three-over-par 74 at the Quicken Loans National in Virginia.
The ex-world number one – now ranked 266 – was three off the lead after a 68 and 66, but made three bogeys and a double bogey in round three.
He is on five under with leaders Troy Merritt and Kevin Chappell on 14 under.
American Merritt shot a 10-under 61, while England’s Justin Rose is 11 under after a 65.
Rose, the world number seven, managed seven birdies in his round.
Merritt, ranked 180, birdied 11 holes, including the first five, and only dropped one stroke.
“The big thing is we put ourselves in contention and that was the goal,” Merritt said.
“I hit the ball really well and got a lot out of it. I think we’re going to have a decent chance.”
The biggest threat to Merritt and Chappell could come from world number eight Rickie Fowler, who shot 68 to move to 13 under.