Thomas Pieters of Belgium won his second European Tour title Sunday, two weeks after his first, by shooting a 5-under 65 to win the KLM Open by one shot as Lee Slattery faltered on the final hole.

The 23-year-old Pieters, who won the Czech Masters on Aug. 30, parred the last four holes at the Kennemer Golf and Country Club to finish with a 19-under total of 261.

Slattery, the joint overnight leader who was trying to win back-to-back tournaments after taking last week's Russian Open, had only one bogey all day — but it came on the 18th when a par would have forced a playoff with Pieters.

Eduardo De La Riva of Spain tied Slattery for second after a 63, one shot ahead of Fabrizio Zanotti of Paraguay (63).