The Ulsterman claimed his second European Tour title of the season and finished four shots clear of Paul McGinley, who fired a closing 64 to surge past Henrik Stenson, who ended at -11.
Clarke had started the day three shots clear but fell a stroke behind with a bogey at the second, while Stenson birdied the first three holes.
However, the 40-year-old kept his composure to fire three birdies of his own while Stenson stumbled at the seventh and ninth and, once he had re-established the lead, he was never in trouble.
England's Lee Slattery and Scotland's Marc Warren tied for fourth at -9, with Denmark's Soren Hansen and England's Ross McGowan a shot further back.



