John Parry claimed his maiden European Tour title at the Vivendi Cup in Paris with a closing 70 good enough for a two-shot victory.
The 23-year-old from North Yorkshire is in his first full season on the circuit and becomes the third rookie to win on Tour this term after Rhys Davies and James Morrison.
Parry finished on 17-under-par, two clear of Swede Johan Edfors and three ahead of a five-man group in joint third that comprised Danes Soren Kjeldsen and Mark F Haastrup, Sweden's Jarmo Sandelin, Dutchman Robert-Jan Derksen and Francois Delamontagne of France.
Parry's triumph landed him the first prize of €204,000, a year's exemption and also lifted him up into the top 65 in the Race to Dubai.
Having started the day with a one-shot lead, the Englishman settled his nerves with a birdie at the third and hit the turn in 34 with two more birdies at seven and nine sandwiching a bogey at the eighth.
Another birdie at the tenth saw him put daylight between himself and the field and, on a damp and bitterly cold day at Golf de Joyenval, his challengers simply could not close the gap.
Parry did drop a shot at the 17th to fall back to 17-under-par, but closest challenger and playing partner Edfors did likewise to ensure he retained a two-stroke lead going down the last.
He closed out the win in confident style with a solid par, but admitted afterwards he had felt nervous as the winning post came into sight.
"I felt nervous," he told Sky Sports. "But I just tried to control my emotions.
"I felt like I was playing well so it almost helped me and my concentration was good.
"I was looking to get to 20-under to try and really kill it off and I think I could have done that if I'd holed a few more putts, but it was good enough."
Asked whether he believed he had a European Tour victory in him heading into the event, he added: "I thought I was (good enough). It was just putting it all together.
"I've had days when I hit it well and putted bad, and then hit it bad and putted well, but I put it all together this week and it came good."
Fine finish for Harrington
Padraig Harrington produced an excellent final round of 64 to finish in a tie for eighth at 13-under alongside James Morrison, Pablo Larrazabal and Richard Green.
In a welcome boost ahead of next week's Ryder Cup, the Dubliner carded seven birdies and an eagle and will now head for Celtic Manor in good spirits.