The Northern Knights beat North West Warriors by 117 runs under the Duckworth-Lewis method in their Interprovincial Limited Over Cup match.
Wednesday's game was reduced to 36 overs because of a delay after a sightscreen sheet was blown down.
Knights made 265-6, with Marc Ellison top-scoring with 87 and Mark Adair adding 44 off 15 balls.
Harry Tector took 5-36 as, despite a last-wicket stand of 56, Warriors managed 147 off 29.1 overs in reply.
Tuesday's scheduled opening fixture in the three-match series between Leinster Lightning and the Warriors had been called off because of a soft pitch caused by heavy rain.
Play got underway on Wednesday after a 25-minute delay and the Knights stood at 24-2 before Ellison and Gary Wilson (40) put on a third-wicket partnership of 125.
Stuart Thompson was the pick of the Warriors' bowlers with figures of 4-55.
North West wickets fell at regular intervals to leave them languishing on 78-9 and it was left to tail end batsmen Andrew Britton (36no) and Craig Young (27) to offer some late resistance and restore some pride.
Tector picked up his maiden five-wicket haul in List A games, while Adair followed up his explosive performance with the bat by returning bowling figures of 3-29.
The Knights face Leinster in another 50-over game in Murcia on Thursday.