Joost Luiten held on to win the ISPS Handa Wales Open by one shot at the Celtic Manor.
The Dutchman entered the final hole knowing that a par would seal his fourth European Tour title as Tommy Fleetwood, who had already finished his round, was one stroke behind him.
But it appeared that it would go into a playoff after Luiten's drive went well right and his second shot found the rough.
His third shot found the green but landed 50 feet away from the hole. However, he managed to two-putt to save par and complete his victory.
The 28-year old had led by two shots going into the final day after carding a 65 on Saturday. His final round of 71 was enough to pip Fleetwood as he reached 14-under par for the tournament.
Luiten felt that it was a difficult day but was glad he finally prevailed.
“It was tough,” he admitted to Sky Sports. “It was hard work down the last.
“I knew it was going to be a tough day. I just tried to hang in there and wait for my chances. I made some nice birdies down the end, and then a par at the last was luckily enough.”
Threw away lead
But things didn't begin well for Luiten as he quickly threw away his lead after just two holes. A three-putt on the first was followed up by another bogey on the second as he completed his front nine in 38 shots.
Marc Warren took the outright lead when he reached 13-under par but stuttered late on. Fleetwood took the clubhouse lead when he finished on the same score after completing his round in style.
The Englishman double bogeyed the 13th and it seemed as though his challenge was over. But Fleetwood managed to card a six-under par round after a brilliant final five holes.
Settle for birdie
Things could have been even better for Fleetwood as an eagle putt on the 18th was too short meaning he had to settle for a birdie.
Fleetwood admitted that he thought that the double bogey would ruin any chance of achieving a good score and was surprised to finish his round on six-under par.
"After the double bogey on 13 I definitely wasn't thinking about getting to 13-under, just try your best on the last few and see what you can get," Fleetwood said.
"I wanted to get back to level par or under par for the day. I thought that would have been a good effort."
The 23 year-old admitted that he hasn't had the best of seasons but hopes to take experience from this weekend.
"After a poor summer, I wanted to finish the season well. I've been playing well recently and the more you get up there, the better. This is how you learn. You can't practice this on the range when you're coming down the stretch in the top five and just the more you do it, the better it is."
Shane Lowry tied with Fleetwood in second place as the halfway leader birdied the 18th to finish with a one-under par round.
One shot adrift was Jamie Donaldson, who will be making his Ryder Cup debut this week, as he carded a 67 on Sunday. Alongside him was Nicolas Colsaerts, Eddie Pepperell, Warren and Edoardo Molinari.
Donaldson's European Ryder Cup team mates will be slightly disappointed as Thomas Bjorn and Lee Westwood as they enter this week's event with poor final rounds.
Bjorn shot a three-over par 74 to finish on one-over while Westwood could only manage a 76 despite finishing with two birdies in the final three holes.