Stephen Gallacher's three-stroke overnight lead disappeared in two holes on the final day of the Omega Dubai Desert Classic.
After his European Tour best 62 in the third round - it finished with him holing a 40-yard bunker shot for an eagle - the 38-year-old Scot three-putted the first in the windy conditions and then bogeyed the second as well after pushing his driving into the trees and missing from six feet.
As he did that, playing partner Richard Sterne chipped to two feet for a birdie that put them both on 19 under par - three ahead of England's Tommy Fleetwood and Indian Jeev Milkha Singh, both of whom birdied the second and long third.
Gallacher matched Sterne's birdie on the par five third, but three-putted once more at the eighth to fall one behind.
Lee Westwood, meanwhile was up to third place when he followed an outward 33 with birdies at the 10th and 11th.
He still had four strokes to make up, but was heading in the right direction - unlike Fleetwood, who drove in the water on the ninth and double-bogeyed, and compatriot Steve Webster, who after four birdies in the first six chipped into the lake at the short seventh and triple-bogeyed.