Alexander Levy held his nerve brilliantly down the stretch to win his fifth European Tour title at the Trophée Hassan II.
The Frenchman entered the final day at Royal Golf Dar Es Salam one shot off the lead but hit the front on the third and never looked back, signing for a 70 and finishing the week at eight under.
That gave him a one-shot victory over Spaniard Alvaro Quiros, who had a birdie-birdie finish to leapfrog Swedish pair Alexander Björk and Joakim Lagergren, Finn Mikko Ilonen and Italian Andrea Pavan.
The victory comes in Levy's 138th appearance on Tour and provides the perfect momentum as he goes in search of a successful defence and a third title at the Volvo China Open next week.
It is also the continuation of some excellent form this season, with three top tens in his other five events keeping him very much in contention to provide a local Member for the European Ryder Cup Team that goes to Le Golf National in September.
"This feels so good," he said. "I'm a little bit tired now because it was really tough today but I did a really good job today. For me, I played an amazing game. I'm so happy to win this trophy.
"Like what I said from the start of the season, I need to improve my game," he said of his Ryder Cup chances. "I need to work a lot. I worked a lot the last two days, two weeks, and I won this trophy.
"So that's helped me but step by step, it's a good win but I need to go back to work because we can see we have a lot of good players in Europe. So it will be tough to make it."
Levy made his first birdie of the day on the third from five feet to move into a share of top spot and when he got on the green at the par five fifth in two for another gain he was the solo leader.
Playing partner Erik van Rooyen also birdied the eighth after a nice chip and he was soon in a share of the lead when Levy went over the back of the green at the seventh and played a poor flop shot.
The 27 year old edged back ahead after leaving himself a short chip into the par five eighth and getting up and down, and the advantage was two shots thanks to a Van Rooyen bogey on the tenth.
I played an amazing game. I'm so happy to win this trophy - Alexander Levy
Levy made an excellent par save on the 11th as he got up and down from a bunker with a 15-footer and while the chasing pack kept moving between five and six under, nobody could get any closer to the lead.
Pavan had made a surge through the field with birdies on the third, fifth, ninth, tenth, 12th and 15th and, while a three-putt bogey on the 17th proved costly, he birdied the last to equal the lowest round of the week with a 66 and set the target at six under.
Levy and Van Rooyen both made tricky putts to save par on the 14th but the latter dropped a shot on the next after finding sand off the tee and coming up short of the green.
The leader went right off the 16th tee and when his second shot got a plugged lie in a greenside bunker, he did well to drop a single shot.
Lagergren was the next man to get into the clubhouse at six under after signing for a closing 70. He birdied the first and bogeyed the fourth but an eagle on the fifth allowed him to turn in 34. The 26 year old bogeyed the 12th after finding the water but almost holed his approach to the last and tapped in for birdie.
That was soon two back, however, as Levy produced at the perfect time, putting his tee-shot on the 17th to four feet and making the birdie.
They were beginning to queue up in the clubhouse behind Levy, with Björk joining countryman Lagergren in signing for a 70. The 27 year old made a birdie-birdie start but bogeyed the third before birdieing the eighth. He then went in the water to drop a shot on the 12th before making a gain on the 15th.
A par on the last from Levy left Ilonen and Quiros in the final group needing an eagle up the last for a play-off which neither could produce.
Quiros turned in 37 and was two over for the day after 13 holes before his big finish saw him sign for a 72, while Ilonen was also level for the day with two birdies and two bogeys.
Van Rooyen carded a closing 73 to sit at five under alongside England's Andy Sullivan, a shot clear of American Han Seung-su, Dutchman Joost Luiten and England's Paul Waring.