Adam Scott confirmed his potential to be golf's next superstar with a commanding victory in the £1.1 million Qatar Masters.

Scott carded a final-round 67 for a 19-under-par total of 269 at Doha Golf Club and a six-shot victory over Lancashire teenager Nick Dougherty and France's Jean-Francois Remesy.

The 21-year-old Australian collected the £175,000 first prize for his second European Tour victory, the ideal preparation for his first appearance in the US Masters at Augusta next month.

Six players shared fourth place, eight shots adrift, including Wales' Mark Pilkington, Scot Stephen Gallacher and England John Bickerton, but Colin Montgomerie stumbled to a closing 74 to finish 11 shots off the pace.

"It feels great to be winning again, I had my chances last year but didn't see it through," said Scott, who won the Alfred Dunhill Championship in January 2001 but failed to make the most of several good opportunities later in the season, in particular letting slip a two-shot lead in the last round of the English Open.

"Today I felt really good and was really calm out there for the first time in that situation. It's the most relaxed I've felt on a golf course.

"I was telling myself to be so patient from previous experience when I got a bit panicky last year. It was definitely disappointing last year. You feel like you are playing well and all of a sudden Sunday comes along and you're put under the gun and you don't perform well.

"Winning for the second time is almost harder than winning the first time so today was very satisfying. I said at the start of the year I'd like to have a multiple-win season and this is a good way to start.

"I've got the first one early in the year so I can really dig my heels in and I feel I'm a complete player now."

Scott began the day three shots clear of the field and was never in danger of being caught, especially after playing three holes in four-under-par around the turn.

After opening with seven straight pars, Scott hit a superb approach to four feet for a birdie two at the eighth, and went one better at the 634-yard par-five ninth, his third shot from 133 yards pitching a foot past the flag and spinning back into the hole for eagle.

"I think that was a bit of winner's luck that sealed it for me," admitted Scott, who shares a similar swing and coach Butch Harmon with world number one Tiger Woods, and had the assistance of Harmon's son Claude, who is also a top coach, this week.

"I waited five years until Friday to hole a full iron shot - a four iron from 200 yards for an excellent eagle on the 15th hole - and now it's two in two days."

Another birdie on the next maintained a six-shot cushion and although he dropped shots on the 12th and 15th, further birdies on the 14th, 17th and 18th rounded off an impressive performance.

Equally impressive was the display of 19-year-old Dougherty, a protege of six-time major winner Nick Faldo, who is playing his first full season on tour and struggled with a rib injury for much of the week.

"It was a big day for me, the first time I've been in that situation," said Dougherty, who turned professional last year after helping Great Britain and Ireland retain the Walker Cup for the first time.

Remesy birdied the last to deny Dougherty outright second.