Steve Stricker managed to cling onto his lead at the Memorial Tournament at Muirfield Village after contrasting third round fortunes.
The American, who led at halfway, finished terribly but a three under par 69 leaves him three ahead of nearest rival Jonathan Byrd.
It could have been so much better though, as he led by six at one stage before his late collapse over the last five holes in Dublin, Ohio.
A great start saw him eagle the second from 113 yards, holed from six feet for another on the par five fifth and birdie the eighth but in the closing stages his putting deserted him and a misguided tee-shot saw him concede three of his six-shot advantage.
Stricker is 12 under overall on 204.
Pretty much everything went right for Byrd, meanwhile, as a closing birdie at the 18th saw him finish with a 69 to put him firmly in contention.
Matt Kuchar and Brandt Jobe are both four shots behind while Rory McIlroy, the first round leader, had problems as he double bogeyed the par three fourth, hit the pond on the 11th to bogey and needed an eagle on the 15th to finish on 71.
That put the Northern Irishman five off the lead and still in with a chance providing his fortunes improve on the final day.
McIlroy is joined by Mark Wilson and Shaun Micheel after they added 66 and 67 respectively.
Luke Donald's 73 left him at four under, eight shots off and tied for 17th while Phil Mickelson was a further two back.
