Merrion made it a magnificent seven wins on the bounce as they hammered Clontarf by 139 runs at Angelsea Road.
The win was set up yet again by their high scoring batsmen, with professional Brett Thompson top scoring with 95 from 93 balls (9 fours, 1 six) as they totalled 295 for 8.
He shared a second wicket stand of 97 with Ben Ackland (67), after the latter and Tyrone Kane (25) had shared an opening stand of 51.
Jeff Short hit a breezy 37 late on to get Merrion close to 300.
Zander van der Merwe (3-48) was the pick of the Castle Avenue attack.
Bill Coghlan (45) and Andrew Poynter (54) both hit entertaining cameos, but there wasn't much support forthcoming as Clontarf were dismissed for 156.
John Anderson (3-22) and Tom Stanton (3-35) each claimed three wickets in the convincing win.
YMCA stay in second spot after a 63 run win at The Hills.
Simmi Singh (87) and PJ Moor (56) both batted well in their total of 224 of 6.
That proved enough as Yaqoob Ali (4-33) and Bobby Gamble (3-28) were among the wickets for the Claremont Road side.
Kenny Carroll's century provided the platform for Railway Union's 94 run win over North County.
The former Irish international hit 18 fours in his 117 from 125 balls as the Park Avenue side scored 264, despite the best efforts of Adam Coughlan (5-51) and John Mooney (3-36).
Eddie Richardson made 57 as County were dismissed for 170 - Pat Collins taking 5 for 23.
Terenure stay bottom after their 44 run loss at home to Pembroke.
Fiachra Tucker (48), Lorcan Tucker (37) and Jack Balbirnie (34) batted sensibly to ensure Pembroke got 210 - Dave Langford-Smith (4-34) and Conor Kelly (3-30) the best of the home side attack.
In reply Terenure fell 44 runs short, with Stephen Moreton (43) once again top scoring.
Ryan Hopkins (3-45), Barry McCarthy (2-45) and Jono Cook (2-14) were all among the wickets, as the side made light of the absence of the Lawson brothers to collect 22 points.