The Softball Ireland National Club Championship (SINCC) is the Premier Slowpitch Softball Competition in Ireland, played between the winners of the Regional Leagues.
The Brian Walshe Cup (Previously the ISA Cup) is second on the Order of Merit and the Irish Open Softball Trophy (IOST) third.
Below this are the Regional (Provincial) Leagues. [Reference: 1]
Softball Ireland National Club Championship
Irish Softball Cup
Softball Ireland | Brian Walshe Cup Finals (Overview):
(previously ISA – IBSA Championship 1990-1996 / IBSF – ISA Cup 1997-2004)
Irish Softball Association | Championship (Seasons):
Irish Baseball & Softball Association | Cup Championship (Seasons):
Irish Baseball & Softball Association | 6:4 Cup Competition (Seasons):
Irish Softball Association | ISA Cup (Seasons):
Softball Ireland | Brian Walshe Cup (Seasons):
Irish Open Softball Trophy
Other All-Ireland Softball Tournaments:
 The Baseline – Irish Softball Community | Facebook Group (2020) Colum Lavery’s [Softball Ireland President] Reply to Post by Enda Mulcahy, 12 January 2020 [Internet] Available from: https://www.facebook.com/groups/2272568132795300/permalink/2870358163016291/ [Accessed 12 January 2020]