Jack Tector scored a century as he and Andy Balbirnie shared a match winning 182 run partnership to lead Leinster Lightning to a 78-run win over the NW Warriors at Bready.
The pair gave very few opportunities as they took the game away from the hosts in a batting masterclass.
Tector's maiden List-A century contained 13 fours and one maximum, while Balbirnie fell just six short of a deserved century of his own, his 94 coming from 104 deliveries (9 fours, 2 sixes).
Their stand allowed Lightning to post a total of 271 for 5, well above par on the early season track.
Debutant Graham Hume was the pick of the attack taking 3 for 48, while Craig Young (2-68) was the other wicket taker.
The Warriors chase never gained any momentum as they struggled from the outset, always well behind the required run-rate as the Lightning attack squeezed them.
David Barr made a patient 31, but wickets fell in clusters as the Warriors struggled to impose themselves.
Gareth Delany ran out Barr with a direct hit and justified his selection ahead of Rory Anders, by also claiming three wickets.
David Rankin (55) and Graham Hume (39*) battled bravely, but in truth it was always about respectability rather than any serious attempt at chasing down the total.
Skipper George Dockrell picked up the final two wickets to finish with 4 for 41 on a day when his side were always in control.
The Warriors were always likely to struggle given the absence of four internationals, and while Lightning have strength in depth, the NW don't possess such a richness of talent.
They now travel to Belfast next week to take on the Northern Knights in a 50-over and 3-day clashes, hoping they will have at least one or two of William Porterfield, Boyd Rankin, Stuart Thompson and Andy Britton available.
MATCH SCORECARD, TABLE, REPORTS, PHOTOS AND AUDIO