Holland opened their account in this season's Yorkshire Bank 40 with a six-wicket triumph on the Duckworth-Lewis method over Worcestershire.
In a Group A game at New Road reduced to 18 overs-a-side due to rain, the visitors moved past the home side's below-par total of 90-6 with 14 balls to spare.
Tom Cooper steered the Dutch to their third straight win in Worcester with an unbeaten 29 after Daan van Bunge had contributed 25 from just 19 deliveries.
Cooper had earlier sent down four tidy overs with the ball as Worcestershire saw their hopes of making the semi-finals of the competition suffer a serious blow.
Thilan Samaraweera struck an unbeaten 47 off 49 balls with four fours but received little support from the rest of his team-mates.
They had got off to a dismal start when Moeen Ali was caught off the second ball of the innings while Alexei Kervezee, who has represented Holland at all levels since age of 13, mustered only six.
Captain Daryl Mitchell and teenage batsman Tom Fell both came and went in a hurry and when Anish Kapil departed before troubling the scorers, Worcestershire were 28-5
Ben Cox became their second run out victim before Samaraweera and Brett D'Oliveira (16 not out) did their best to repair the damage with an unbeaten stand worth 55 in 7.3 overs.