Jon Rahm puffed the last hole to win the DP World Tour Championship in Dubai on 19 par and the seasonal Race to Dubai title of the European Tour.
Rahm made a three-foot putt to finish one for Tommy Fleetwood from England and win the event for the second time.
And it meant that 25-year-old Spaniard also made Fleetwood the number one in Europe for 2019.
Rahm becomes the second Spaniard who achieved the performance after the late Seve Ballesteros, who won it six times.
"Seve was such an idol for us," Rahm said. "To mention my name there, it's hard to believe. I can't believe some of the things I've achieved."
Rahm survives roller coaster last afternoon
Such a drama on the final green seemed unlikely when Rahm started on Sunday with five birdies in his first seven holes to take an iron hold of the tournament .
He had opened a six-shot lead, but then four bogeys in the next eight left the door open.
Fleetwood took the challenge and was inspired by the back nine, grabbing five birdies in his last seven holes, including on both 17 and 18 to tie in with Rahm.
The Spaniard needed a birdie-four to win both prizes, and he produced an excellent bunker shot that left a short putt to seal his one-shot victory.
It was his fourth victory of 2019 and his second victory in 2019 in a row, after winning the Open de Espana in his last tournament six weeks ago.
This victory also takes him to third place in the world ranking behind number one Brooks Koepka from the US and Rory McIlroy from Northern Ireland, who finished fourth in Jumeirah Golf Estates after a closing 73.
He also won the biggest winning prize in the golf tournament of $ 3 million (£ 2.34 million) and another $ 2 million (£ 1.56 million) for winning the race to Dubai.
"It was so up and down day," he said. "I had six shots ahead and I came down 18 and needed a birdie to win.
" But how often do you dream of being the last to be the last to to win a tournament? "
More to follow.