Lucas Bjerregaard fired a final round of 67 to overhaul defending champion Tyrrell Hatton and win the Alfred Dunhill Links Championship.
Hatton looked in a strong position to win the tournament for a third straight year after back-to-back scores of 66 left him in the lead heading into Sunday's play at St Andrews.
The Englishman - fresh from helping Europe win the Ryder Cup in France - reeled off four successive birdies on his front nine to remain in control, only to suffer a surprising collapse after the turn.
He had back-to-back bogeys at the 10th and 11th before dropping further shots at the 15th and 16th, leaving him to sign for a level-par 72 and a share of second place with Ryder Cup team-mate Tommy Fleetwood.
Bjerregaard, who had trailed by as many as six shots with 12 holes to play, finished one ahead of the big-name duo to secure his second European Tour title and move into the top 10 in the Race to Dubai rankings.
"It didn't really look like I was in it today - Tyrrell looked like he was going to take off with it," the delighted Dane told Sky Sports.
"I'm really happy now. It's been a great year, but now it's got a whole lot better."
The 27-year-old crucially bounced back from bogeying the penultimate hole with a three at the par-four last, with Hatton - bidding to become the fifth player to win the same event in three consecutive seasons - unable to force a play-off when he failed to find the cup with a birdie putt of his own on the 18th green.
"I guess my putt on the last to get in the play-off sums it up, really. Just a massive gust of wind knocks me off, pretty much lose balance on a putt, which is unfortunate," a dejected Hatton told the European Tour's website.
"I'm pretty disappointed because I had a five-shot lead at one point. It was in my hands."
Fleetwood had set the clubhouse target at 14 under by signing for a 69, though it could have even better for the Englishman had he taken a birdie opportunity on the final hole.
Tapio Pulkkanen of Finland was alone in fourth on 12 under while American pair Brooks Koepka and Tony Finau both finished inside the top 10, ending on nine and eight under respectively.
17 de diciembre 2018
|Ajax star De Ligt wins Golden Boy award|
|Foles fuels Eagles´ upset win over Rams|
|Latham carries bat as New Zealand leave Sri Lanka reeling|
|Keep your cool, Virat – Paine and Kohli in another confrontation|
|Depleted Nuggets complete season sweep of Raptors|
|Fabinho was ´outstanding´, says Klopp|
|Patriots QB Brady on loss to Steelers: We aren´t playing well enough to win|
|Elliott says Cowboys´ shut-out loss to Colts was embarrassing|
|De Bruyne not worried about Liverpool title challenge|
|Sixers star Simmons makes history with triple-double|
|WATCH: Nowitzki receives standing ovation in first home game of season|
|Seattle´s playoff spot on hold after Seahawks suffer OT loss to 49ers|
|Cheika survives as Wallabies coach, Johnson appointed|
|Vikings remain in NFC playoff picture|
|Steelers stay ahead as Patriots lose AFC´s second seed|
|Lionel Messi is the best, says Amor|
|I´m still tired just looking at Robertson – Mourinho in awe of Liverpool intensity|
|Casillas takes swipe at Mourinho after United lose to Liverpool|
|Valverde relieved as Messi brilliance prevents another Levante nightmare|
16 de diciembre 2018
|WATCH: Leno proposes to girlfriend after Bears clinch division title|
|Messi and Suarez the world´s best strike partnership, says Pique|
|Klopp: I cannot keep every Liverpool player happy|
|Messi and Suarez outscoring Real Madrid and Atletico in LaLiga|
|Levante 0 Barcelona 5: Marvellous Messi banishes ghosts of last season|
|Colts rout Cowboys to keep playoff hopes alive|
|Bears shake off Packers to win NFC North and return to playoffs|
|Mourinho explains Pogba omission and defends Lukaku´s Liverpool showing|
|Liverpool´s display against Manchester United one of the best, claims Klopp|
|Look away Jose! Damning stats expose Manchester United´s limp Liverpool loss|
|Time´s up, Mourinho: Manchester United can dither no longer|
|Manchester United´s players are not dishonest – Mourinho|
|Manchester United´s lack of ambition under Mourinho is scary – Keane|
|Mourinho: All Manchester United can achieve is fourth|
|Quagliarella should be protected by UNESCO, jokes Sampdoria coach|
|Manchester United surpass last season´s goals-against tally in first 17 games|
|Hasenhuttl revels in ´unbelievable´ victory over Arsenal|
|Liverpool 3 Manchester United 1: Shaqiri´s late show bails out Alisson as Reds return to the top|
|Edinburgh in control in Champions Cup, Racing win again|
|Emery ponders January signing after Bellerin injury|
|It is only a knock – Sarri plays down Hazard injury fears|
|Redskins QB Alex Smith released from hospital|
|Starc: If I listen to Warne, I may as well retire|
|Curry interviews retired NASA astronaut, apologises for moon comments|
|Hazard refusing to give up on Premier League title hopes|
|Ziyech & Blind score hat-tricks as Ajax claim 8-0 win|
|Canelo v Fielding: What next for three-weight champion Alvarez?|
|Southampton 3 Arsenal 2: Austin and Ings end Gunners´ long unbeaten run|
|Brighton and Hove Albion 1 Chelsea 2: Sensational Hazard proves the difference|
|Pogba on the bench as Clyne starts for Liverpool|
|Lipsky ends long barren spell in Malelane|
|Lakers´ Stephenson to repeat air guitar despite technical|
|Fletcher pushed Miller on to Broncos sack record|
|The Sarri effect: Hazard surpasses 2017-18 goal involvements in just 16 games|
|Van der Burgh retires on a high note with breaststroke double|
|Rashford: Liverpool was never an option|
|No team Liverpool play this season will be as motivated as Man United – Klopp|
|India surprised by contentious Kohli decision - Bumrah|
|The Sunday Seven - 7 Key Opta facts for NFL Week 15|
|Miller eyeing Joshua bout at Madison Square Garden|
|Finch cleared of serious damage after another finger blow|
|Rashford ´untouchable´ because he plays on his limits – Mourinho|
|It´s important to have his mentality - Mayfield thrilled with Kobe Bryant visit as Browns beat Bronc|
|Centurion Latham indebted to ´world-class´ Williamson|
|Spurs´ Dier out until January after appendix removal|
|A-League Review: Glory down Jets to stay unbeaten|
|Philander ruled out of first Test|
|Controversial Kohli dismissal puts Australia in command|
|Thunder´s Westbrook: ´When we defend like that — best team in the league´|
|Kante at his best further forward, reiterates Sarri|
|Rose capitulates in Indonesia to squander chance to top rankings|