Clontarf secured the Women's Cup with a 27-run win against Merrion in a high scoring encounter at Sydney Parade.
Overseas player Kerrie Tomlinson won the Player-of-the-Match award as she bludgeoned 13 fours and 3 sixes in a top score of 87 from just 51 balls to propel the Castle Avenue side to 186 for 2 in their 20 overs.
Skipper Una Raymond-Hoey had got the innings off to a brisk start, hitting 6 fours in her 32 from 22 balls, as she and Lara Maritz shared an opening stand of 52.
Maritz added 129 for the second wicket with Tomlinson, stroking 5 fours in her unbeaten 52, providing excellent support throughout.
Merrion were without the Joyce sisters and Hannah De Burgh Whyte, but despite their absence they were always in the chase until the latter stages of the contest.
Overseas player Tilly Lugg fell early, but skipper Rachel Delaney and Leah Paul shared a second wicket stand of 71 and at 104 for 1 after 12 overs, the contest was an even one.
However, scoreboard pressure told, and once Paul went for 56 from 40 balls (9 fours) and Delaney for 43 from 48 balls (6 fours), the required rate became too steep and Merrion finished on 159 for 5.
A great achievement for Clontarf in their first season back in the top flight.