FINAL ROUND LEADERBOARD: (GB & Ire unless stated)
-20 S Dyson -17 O Wilson, R McIlroy -16 R Ramsay, R Cabrera-Bello (Spa)
Selected others: -14 D Clarke, L Donald -13 L Westwood -10 E Els (SA), G McDowell
The in-form Dyson shot 21 birdies over his four rounds at St Andrews
Simon Dyson shot a six-under final round of 66 to take victory at the Dunhill Links Championship on Monday.
The 31-year-old Englishman made six birdies in his opening seven holes and went on to finish on 20 under after a four-round total of 268 at St Andrews.
Oliver Wilson and Rory McIlroy tied for second, three shots adrift.
Luke Donald had led going into a final round rescheduled after gale-force winds on Saturday but he carded 73 to end a disappointing six shots back.
The first prize of £485,850 is the biggest of Dyson's career and the victory takes him into the world's top 50 for the first time, having begun the week in 92nd.
Dyson, who won the Dutch Open in August, moves to the top of Europe's Ryder Cup standings.
"This is like our fifth major, a massive tournament at the home of golf, and I've shot 66 to win it," said Yorkshireman Dyson of his St Andrews victory.
"I'm absolutely buzzing. Darren Clarke has just said to me, 'take your time and enjoy it - it does not get any better than winning at St Andrews'.
"My parents always come up [to the tournament] but couldn't make it this year. They're never coming back!"
Third place for McIlroy takes him from third to first on the European Tour money list with two months remaining.
Dyson was four clear after eight holes but by the time McIlroy reached the turn he had reduced the deficit to two strokes.
However, he bogeyed the 12th, 16th and 17th to extinguish any hope of victory.
He then birdied the last to draw level with Wilson - although he benefitted from the Englishman missing a three-foot birdie putt on the last after he was distracted by a noise from behind the green.
He's a great lad, upbeat all the time, and has the perfect attitude for golf
Oliver Wilson on Simon Dyson
"I heard someone shaking a can before I went to hit it, but then on my backstroke he shook it as loud as he could," said Wilson.
"I'm not very happy at the moment. I'd not missed one that short all week, but I guess it's another lesson.
"I played with Simon last week [at the Vivendi Trophy] and this week [for three rounds], and he has not really missed a shot.
"He's a great lad, upbeat all the time, and has the perfect attitude for golf.
"He's also great in the team room, and I'd love to partner him in the Ryder Cup. I think he'll be great there."