American Chris Gotterup impressively held off Rory McIlroy and the chasing pack to claim the biggest win of his career with a remarkable Scottish Open success.

The world number 158, who began the final round tied for the lead with McIlroy, displayed admirable nerve to register a closing 66 and triumph by two shots on 15 under at the Renaissance Club.

McIlroy’s challenge faltered on the back nine and he shared second place with England’s Marco Penge.

As well as winning £1.2m and his second PGA Tour title, 25-year-old Gotterup secured a debut appearance in The Open at Royal Portrush next week.