Stian Swanepol took six wickets as Dundrum beat Lurgan, while there were also first round Challenge Cup wins for Ballymena, Bangor and Muckamore.
Swanepol's 6 for 17 saw Lurgan ousted for just 31, with seven players failing to score.
Dundrum lost three wickets in the chase, but James Martin's 14 not out eased into the second round where they will entertain Derriaghy.
Two of the other matches were anything but one-sided as Ballymena and Bangor both held their nerves in tight encounters.
James Kennedy's half century helped the Eaton Park side to 132 for 9, despite the best efforts of Andrew Greer (4-27) and Ross Bryans (2-5),
Bryans top scored with 35 in the chase, but five wickets for Michael Glass jnr and three for John Glass sealed a nervy 12-run win and secured an away trip to CSNI.
There was only four runs between Bangor and Donacloney Mill, with the seasiders 175 just enough.
They now face a tough away day at Premier high flyers Lisburn.
Muckamore are also through after a 40-run win over Saintfield.
Jamie Magowan's 46 propelled the Moylena side to 182, despite Gareth Harrison's 5 for 16.
Pavan Karthik then also claimed a five wickets haul, supported by Donald Dinake (3-20) as the Saints made 142 - Kadeem Alleyne hitting 44.
Muckamore will now face Cregagh away in the next round.
NCU CHALLENGE CUP ROUND ONE RESULTS
Ballymena beat Templepatrick by 12 runs
Ballymena 132-9 (50.0 overs, J Kennedy 51, J Glass 28, A Greer 4-27, R Bryans 2-5)
Templepatrick 120-10 (R Bryans 35, M Glass (Jnr) 5-32, J Glass 3-12)
Donacloney Mill lost to Bangor by 4 runs
Bangor 175 (W Simpson 28, A Kennedy 3-24, A Bingham 2-36)
Donacloney Mill 171 (A Bingham 37*, W Simpson 3-25, Kuda 3-39, D Kennedy 2-18)
Dundrum beat Lurgan by 7 wickets
Lurgan 31 (S Swanepoel 6-17)
Dundrum 32-3 (8.0 overs)
Muckamore beat Saintfield by 40 runs
Muckamore 182 (44.1 overs, J Magowan 46, L Allen 27, G Harrison 5-16)
Saintfield 142-9 (40.0 overs, Kadeem Alleyne 44, Pavan Karthik 5-23, Donald Dinake 3-20)