Phil Eaglestone's five-wicket haul ensured Waringstown beat CSNI comfortably to reach the T20 Cup semi-finals where they are joined by North Down and Lisburn. Holders CIYMS match at Woodvale was postponed.
Among Eaglestone's (5-16) victims were the dangerous Ross Adair (18) and top scorer Graeme McCarter who cleared the ropes four times in his 35.
Kyle McCallan (2-11) was also among the wickets as CSNI finished on 118.
The modest target proved little trouble with Greg Thompson's unbeaten 32 and 28 from James Hall ensuring the seven-wicket win was achieved with 13 balls in hand.
It was a much more tense affair at Middle Road where Lisburn stumbled over the line to beat Carrick by three wickets off the penultimate ball.
Ryan Eagleson (36) and Alex Haggan (35) rescued Carrick after the much vaunted top-order triumvirate of George Munsey, CJ van der Walt and Michael Gilmour failed, with Mark Berry (4-20) doing most of the damage.
A total of 114 shouldn't have been much trouble but Lisburn didn't almost get there, as Carrick will rue a succession of missed opportunities.
Adam Berry (31), Robert Rankin (27) and Glenn Halliday (21) all got runs but the most vital were the last over singles by Stuart Lightbody and Luke Allison.
North Down join them in the semi-finals after they beat Instonians by seven wickets.
Shane Getkate's 54 from 48 balls (7 fours, 1 six) was the highlight of Instonians' 127 for 6.
It wasn't nearly enough as Ruhan Pretorius guided the chase with an unbeaten 58, sharing a third wicket stand of Peter Eakin (41) which broke the back of the chase.
The CIYMS game at Woodvale was postponed due to the wet conditions and will be replayed this Sunday, August 2nd.