Graeme McDowell takes advantage of a shot in the final round at Saudi International

Graeme McDowell birdied his final hole to take a one-shot lead after the third round in the Saudi International in King Abdullah Economic City on Saturday.

After a difficult ninth front, McDowell rolled three birdies in a row on 12, 13 and 14 before finishing in style with another in par four 18.

The Northern Irishman, who won for the last time at the European Circuit in 2014, signed a four below par 66 to take him to a total of 12 below, a shot from Frenchman Victor Dubuisson.

The putter has been freezing for the past few days, but it got a little hot in the last nine days, McDowell said. It was really nice to get some birdies there because I think the last nine have been difficult.

I'm going to have to get well to have a chance tomorrow.

I'm attentive to Victor, and it's good to see him up there in the standings.

Dubuisson loaded a ghost-free 65, with gains in the first three holes before adding two more in the last nine.

Overnight leader Gavin Green lost momentum after dropping blows on the 14th and 15th, but continued to compete for an inaugural title of the European Circuit at age nine.

Defending champion Dustin Johnson is tied for fourth with seven less, after a second consecutive round of 68, which included five birdies and three bogeys.

World number one Brooks Koepka shot a 65 at Royal Greens Golf and Country Club for his best competitive round since shooting the same score in the final round of the World Golf Championships-FedEx St. Jude Invitational in July.

It was a breakthrough for the four-time major champion, who plays only his second tournament since he recovered from a knee injury suffered in October.

Koepka sits six shots from the leader in seventh place with his American partner Phil Mickelson and the Belgian Thomas Detry.