A century from Farooq Nasr helped Balbriggan beat Cork County by 89 runs to go top of Division Two in their rearranged T20 encounter in Laois.
Nasr thumped 12 fours and 5 sixes in his superb unbeaten 115 from just 67 balls, sharing a second wicket stand of 98 with Ehtesham Ahmed (31) after Conor Fletcher had been trapped by Jeremy Benton without scoring.
When Ahmed fell to Harry Fitzpatrick there was no respite for the beleaguered Cork attack, as Zimbabwean Timceyn Maruma hit 4 sixes and fours in his undefeated 59 from just 36 balls.
He and Nasr added an unbroken 118 as Balbriggan racked up a whopping 221 for 2.
None of the Cork attack would have been too keen to examine their figures, but spare a thought for Adil Hameed who conceded 33 runs in his solitary over.
Skipper Cormac Hassett sparkled briefly in the chase, hitting 3 fours and 2 sixes in a rapid 11-ball 27, before becoming the first of Duane Harper's (3-22) victims.
Harry Fitzpatrick (35) and Ross Durity (28) shared a fourth wicket stand of 79, but it was all about respectability as they finished well adrift on 132 for 7.
Balbriggan leapfrog Rush at the summit, and you get the feeling this league could be one of the tightest and most open promotion races in recent times.