Thailand’s Thongchai Jaidee produced a flawless final round to claim victory at the Porsche European Open in Germany ahead of Englishman Graeme Storm.

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Overnight leader Jaidee posted four birdies in his bogey-free round of 67 on Sunday to finish on 17 under, one shot ahead of Storm.

Jaidee had Storm level with him until the 17th, when the latter found the water with his tee shot, leading to his sole bogey of the day.

Overtaking Colin Montgomerie as the competition’s oldest winner, 45-year-old Jaidee then sealed his triumph with a fine six-foot putt on the 18th.

Sweden’s Pelle Edberg was third, two shots behind Storm with Scott Hend of Australia fourth. Jaidee made just two bogeys in the entire competition and even he was slightly surprised at his finishing score.

“It’s a very special week for me,” said Jaidee. “It is the third time I have won outside of Asia, so I’m very excited about that and I’m happy to win this tournament.

“I’m feeling very confident at the moment. I didn’t make many mistakes this week. I played very nicely and 17 under is some score for me.

“Graeme Storm played very well too. It was very exciting on the last three holes. The 18th is tough and you can’t miss the fairway. I had to go left and then it was a good chip and a good putt at the last to win.”