Matt Fitzpatrick took advantage of a lapse from Tyrrell Hatton to claim the biggest win of his fledgling career at the World Tour Championship after Henrik Stenson sealed a second Race to Dubai title.
Ryder Cup rookie Fitzpatrick birdied the 18th to claim the EUR1,217,174 prize money for first place at the final European Tour event of the year, finishing 17 under after a superb five-under final round of 67 at Jumeirah Golf Estates on Sunday.
While 22-year-old Fitzpatrick was able to celebrate a third European Tour title - and his second in 2016 - fellow Englishman Hatton was left to rue his only bogey of a closing 68 at the last.
Hatton claimed his maiden Tour title at the Alfred Dunhill Links Championship in October, but missed a putt of around 12 feet for par at 18 after putting his tee shot in the creek and paid the price, finishing a stroke adrift of his compatriot.
Fitzpatrick expertly chipped to five feet from the pin from a greenside bunker, then held his nerve to sink a decisive sixth gain of the day and avoid a play-off on the Earth Course, taking his prize money for the year to a whopping EUR3.5 million.
The Yorkshireman also hit a majestic bunker shot at 17 to rescue par, having got himself out of trouble on the previous hole with a sublime lengthy putt to leave him with a tap in for par.
His only bogey came at the 10th, where Hatton - playing in the group ahead of Fitzpatrick - made the third of his five birdies before coming unstuck at 18.
Charl Schwartzel finished with a 67 to take third place, while Victor Dubuisson - the leader by a shot at the start of the day - could only manage a level-par 72 to slip back for a share of fourth.
Francesco Molinari, Soren Kjeldsen, Bernd Wiesberger and Nicolas Colsaerts also ended the week four shots back from Fitzpatrick.
Stenson and Rory McIlroy put on a show in their final rounds, with the Open champion claiming the end-of-season title for a second time after they both carded seven-under 65s.
Swede Stenson and McIlroy, who hit the turn in 30, finished 12 under and joint-ninth, with Alex Noren - the Olympic silver medallist's biggest threat in the battle for the crown - down in a share of 23rd.