The Lagan Valley Steels Twenty20 tournament kicks off in the NCU on Tuesday night.
Reigning Premier League champions Instonians kicked off their campaign in Group with a home match against Lisburn at Shaw’s Bridge.
In the same group North Down host Carrickfergus at The Green.
In Group A CIYMS take on Ballymena at Belmont.
The other group A fixture takes place on Thursday night when cup holders CSNI travel to play Waringstown at The Lawn.
The group stage is round robin and the top two clubs in each group will make it through to the semi-finals.