Donald led from start to finish, closing with a five-under-par 67 for a 267 total, a stroke better than fellow-Briton Davies (68) who stuck with him almost to the last.

It took something special to clinch the title, with Donald homing in a second shot to 12 feet for a decisive eagle at 16, with his rival managing no better than a birdie.

Two closing pars by the pair saw Donald edge home, a week after he let the European Tour's flagship title, the PGA Championship, slip from his grasp at the penultimate hole in the final round at Wentworth.