Simon Dyson birdied three of the opening four holes to take the early lead in the delayed final round of the Alfred Dunhill Links Championship.
Dyson tussled with overnight leader and fellow Englishman Luke Donald, who birdied the par four third at St Andrews to remain one behind.
Dyson birdied the opening two holes and the fourth, all par fours, pitching to within three feet of the flag on the first and holing from around 18 feet at the second.
Rory McIlroy, who also birdied the third, was one shot further back, one ahead of fellow Northern Irishman Darren Clarke, Finland’s Mikko Ilonen, Scotland’s Richie Ramsay plus Spaniards Rafael Cabrera-Bello and Jose Manuel Lara.
Donald, who assumed the lead at Kingsbarns yesterday after high winds prevented play on Saturday, began his assault on a first win for three and a half years knowing putting will be crucial at The Old Course.
“The putter has been working well, and that's going to be the key again,” said Donald, whose last victory was in March 2006 in Florida.
“Usually you can give yourself a lot of chances around St Andrews. It's whether you can take them or not. I know a few years ago I was in a similar position, and I played well but just didn't make the putts.
“I definitely need to cope rolling the putts in.”
The celebrity pro-am was continuing too with Donald partnering ex-England footballer Jamie Redknapp and McIlroy celebrating his father's 50th birthday by playing with him in the final group.