The next generation of the O'Brien dynasty showed their youthful class as they were very much to the fore in Railway Union's 151-run destruction of Civil Service at Park Avenue.
Robert O'Brien hit 8 four and 4 sixes in a brilliant 123, adding 90 for the fourth wicket with Liam McCarthy - who cleared the ropes three times in a 40-ball 44.
A total of 264 always looked a winning one, and with Sean O'Brien (4-21) taking a cluster of early wickets, the result was never in doubt, just the margin.
There were two wickets apiece also for Piyush Sharma and Srihan Karpe as Civil Service were dismissed for just 113, despite late, brief, resistance from Ankit Gusain (24).
North Kildare held their nerve to clinch a 23-run win over North County at The Maws.
Half centuries from Josh Uddin ( 4 fours, 4 sixes) and Waqar Azmat saw the hosts total 249 - five wickets for Simi Singh (5-38) and two each for Eddie Richardson and Abdul Ghaffar.
The chase was in trouble as the Balrothery side slumped to 120 for 7, including Simi Singh without scoring.
Where's there is Richardson, there is hope and he almost pulled off a miracle escape.
He hit 8 sixes and 3 fours in a brilliant 112 before being last man out attempting to clear the ropes again.
A great game but an early blow for a County side hopeful of a return to the top flight.
Rush wasted no time in brushing aside Terenure at Rush.
The visitors could only muster 129 with Henry Dall making 44, including seven boundaries. The wickets were shared by the Kenure attack with three for Nasir Totakhil, two apiece for Jarred Barnes, Josh Doyle, and Asher Abbasi, plus one for Allan Eastwood.
Nathan McGuire pummelled 6 fours and 3 sixes in a 27-ball half century, while Brandon Morris hit three maximums in a quickfire 31 and there was runs too for Joshua Doyle (28).
The seven wickets win achieved in double quick time - just the 17th over which was pleasing in that it got everyone out of the bleak conditions and allowed them to watch entire Leinster versus Northampton European semi-final.
There was no play in the Cork County versus The Hills match. The Mardydke was under water after heavy rain on Friday with the sensible decision to call the game off saving The Hills a fruitless journey.