Lancashire went top of Group A in the Clydesdale Bank 40 with a nine-wicket victory over the Netherlands at Old Trafford.
In a match reduced to 27 overs by early rain, the visitors were dismissed for 68 in 20.5 overs and Lancashire knocked off their target in 16.3 overs.
Opener Stephen Moore continued his good form in one-day cricket this season by making 50 not out off 54 balls and Steven Croft was 14 not out when the winning single was taken.
Although the Netherlands were much weakened by injury and unavailability - two players were unable to get visas - their batting was disappointing given their impressive early-season form in this competition.
Spinners Gary Keedy and Stephen Parry did most of the damage, Keedy taking 3-15 and Parry 3-13, while seamer Ajmal Shazad finished with 2-7 from four overs.
Lancashire need to beat Gloucestershire at Bristol on August 19 to be sure of a place in the semi-finals.