Graeme McDowell fell out of contention on the final day of the Scottish Open as he finished 10 shots behind winner Luke Donald.
Sharing the lead going into the final round, McDonald struggled to get going on Sunday and a quadruple bogey on the 12th ended his remote hopes.
His closing 74 left him in a share of 42nd place.
Darren Clarke also had a disappointing closing round of 75 which left him sharing 66th on five under.
With the cut only confirmed on Sunday morning in the weather-affected event, Gareth Maybin exited on three under with Michael Hoey also failing to progress on one under.
Paul McGinley (66), Shane Lowry (65) and Padraig Harrington (68) were the top Irish finishers in a share of 15th place on 12 under.
Damien McGrane was three shots further back after a closing 67.
Amid a final-day birdie fest, McDowell was only able to pick up two shots in his opening nine holes.
By the time he came to the 12th tee, he was four behind a charging Donald.
However, McDowell's remote hopes were ended as he lost his ball in a gorse bush off the tee and then also found trouble with his second drive.
World number one Donald was in control of the tournament by the turn and he went on to sign for a 63 as he finished four shots clear of Sweden's Fredrik Andersson Hed, who went one better with a 62.
Clarke, who will be playing in next week's Open at Sandwich, had two double bogeys and three bogeys in a scrappy final round.