Dyson began the day two shots behind joint third-round leaders Gary Orr and James Kingston, but birdied four of the last seven holes to finish with a 12-under total of 268 for his second title of the year. He equaled Seve Ballesteros and Bernhard Langer in winning the event three times.
“It’s something special, a dream come true really,” said Dyson, who also won the tournament in 2006 and ’09. “To win any title once is tough, but to win it three times is a fantastic feeling.”
U.S. Open champion Rory McIlroy finished third after an inconsistent 67 that included six birdies and three bogeys. Orr was looking to end an 11-year title drought on the European Tour but had to settle for fourth after a disappointing 71, while Lee Westwood carded a 66 to climb to fifth.
Orr and Kingston both bogeyed the first hole, and Dyson eventually pulled away from a bunched-up field by making three straight birdies from the 12th hole.
“The big turning point for me was 13,” Dyson said. “I hit a good six iron, just pitched on the right hand side of the green, and got a really good bounce and just trickled down to about a foot. And that was a big turning point, because after that I played some lovely golf.”
Kingston, of South Africa, settled for sixth at 7 under after a 73.