Rosenallis left Portlaoise on Friday empty handed after a heavy defeat.
The Harps produced one of the most impressive performances in any of the midlands club championships over the weekend.
Alan Guilfoyle's side ran up a scoreline of 3-19 to 0-13 against Rosenallis at the LOETB Centre of Excellence on Friday evening.
Portlaoise meanwhile made a winning return to the senior grade.
They were 1-14 to 0-14 winners over Castletown at the same venue on Saturday.
Prior to that the county champions from last year were well beaten by Rathdowney Errill and Clough Ballacolla made a winning start to their campaign against last year's beaten finalists, Abbeyleix.
James Gormley Named On Irish Squad For FIBA EuroBasket Qualifiers
Portlaoise Panthers Suffer Tough Defeat In Super League
CCFL: St Peter's Extend Their Advantage At Top Of Premier Division
NFL: Relegation Firmly On The Cards For Offaly
Laois "Devastated" By Defeat Despite Delivering "Manliness" - Justin McNulty
Westmeath Ladies Bag First Win Of League Season
Big Camogie Wins for Westmeath and Laois Over The Weekend
Fitzgerald "Relieved" After Squeaking Past Kerry
NHL: Galway Prove Too Strong For Offaly
Former Laois And Offaly GAA Manager Honoured By An Garda Síochána
Athlone Town Make It Two Wins From Two In First Division
Lee Fitzpatrick Scores Try For Ireland U20s In England
NFL: Westmeath Move Closer To Promotion
Shane Lowry Finishes Strong In California
Westmeath Drifter Sets Sights On Success In 2026
Offaly’s Alex Dunne Joins Alpine’s Young Driver Programme
NHL: Laois And Kerry Clash In Division Two
Shane Lowry Cards Opening Round 73 At Genesis Invitational
Athlone Town Aiming For Back To Back League Wins