The NCU season is up and running as Instonians edged out Waringstown at The Lawn by three runs, while there were also wins for Woodvale, CIYMS and North Down.
Nikolai Smith clubbed five sixes as he top scored with an unbeaten 58 from 40 balls to help Instonians to 148 for 5.
Left-hander Marcus Poskitt showed glimpses of his talent on debut as the Irish U19 international made 28, before being dismissed by Morgan Topping, who picked up two wickets as did skipper Lee Nelson.
Shane Getkate struck an early blow in the chase dismissing Adam Dennison, but James Hall (22), Greg Thompson and Nelson rebuilt.
Thompson hit 7 fours and 3 sixes in his unbeaten 68 from 55 balls (7 fours, 3 sixes), as he and Nelson (32) added 64, but Getkate struck again to remove the skipper and in a tense finale, Waringstown just fell short.
Woodvale returned to the top flight with a win over Lisburn.
Wayne Horwood top scored with 44 from 35 balls (4 fours, 2 sixes) as The Ballygomartin side made 130 for 6 - their total boosted by 21 wides.
Those were to prove crucial in the final analysis as Lisburn were beaten by 19 runs, despite a late rally after they had been reduced to 55 for 6 - Paven Karthik taking 3 for 15.
Richard Simpson (32) led a recovery but they were always behind the required rate and ended on 111.
CIYMS started with a solid 29-run win in the early game with CSNI.
John Matchett top scored with 34, while Jason van der Merwe (29*), Chris Dougherty (23) and Jacob Mulder (20) all chipped in.
Skipper Nigel Jones cleared the ropes twice in a breezy 17 and a final total of 146 for 4 was always going to be challenging for a CSNI side missing Gary Wilson and Stuart Thompson.
Ross Adair hit 3 fours and 2 sixes in a quickfire 30, but CIYMS strangled the chase - no more so than Jones (2-14) and Mulder 2 for 25 as the Stormont side finished on 117 for 7.
Carrickfergus had made the signing of the week when they snapped up Scottish international George Munsey but he didn't enjoy the best of debuts at North Down.
Munsey scraped 10 off 22 balls before being dismissed by Carl Robinson, who claimed 2 for 7 in his four overs.
Michael Gilmour hit three sixes in the top score of 47, but a total of 104 for 6 looked distinctly under-par.
To Carrick's credit though they took North Down to the final over, despite the home side only losing two wickets.
Adita Adey followed up his 1 for 16 to make an unbeaten 51, sharing a second wicket stand of 78 with skipper Ally Shields (46).
Ruhan Pretorius (4) had went cheaply, dismissed by the veteran Ryan Eagleson who took 1 for 11 in his four overs.
TABLE AND MATCH SCORECARDS