Where matches are interrupted or delayed because of weather, the number of overs may be reduced to a minimum of 20.
[2] Duckworth Lewis is employed where a match is interrupted after it has started.
The most successful club in the competition is North Down with 32 victories (1 shared).
Muckamore are the current holders after beating Lisburn in the 2024 Final.
Source for finals up to 2002: J. Clarence Hiles (2003), A History of Senior Cricket in Ulster.