Belgium's Thomas Pieters claimed a second successive European Tour victory as Lee Slattery bogeyed the final hole at the KLM Open in Holland.

Slattery, a joint overnight leader and winner of last week's Russian Open, had the chance to match Pieters' 19-under-par clubhouse total and force a play-off at Zandvoort but missed a five-foot putt on the 18th.

That meant Slattery dropped into a tie for second on 18 under alongside Spain's Eduardo de la Riva, and Pieters triumphed by a single shot.

Pieters, who won his maiden title at the Czech Masters on his last outing a fortnight ago, began the day two off the lead and moved into contention with four birdies on the front nine. He picked up another shot on the 10th and - although he immediately gave that back with a bogey on the 11th - another birdie at 13 put him on course for a five-under-par round of 65.

Pieters was pleased with his victory but admitted he was nervous watching Slattery, who carded a 68, coming in.

He told europeantour.com: "I'm really, really happy. I felt like I played better in the Czech Republic, but my short game was great this week and saved me many times.

"I rolled in a couple of good ones early in the round and made a really good par save on the ninth which kept the round going.

"I had chances coming in and I felt like I needed to make a couple more.

"I feel bad for Lee as he played great. It wasn't comfortable watching him play the last couple of holes. I was wishing I'd made one more birdie.

"I'm really happy overall with the week and how I played and it's nice going forward from here."

Rafael Cabrera-Bello, who also had a share of the overnight lead, finished in a tie for seventh on 15 under after a one-over-par 71.

Paraguay's Fabrizio Zanotti took fourth on 17 under after a superb 63. England's Eddie Pepperell shot 64 to finish tied fifth on 16 under with Morten Orum Madsen of Denmark.