Mary's beat Cashel in a high scoring game running out 3-20 to 2-14 in the end.
In the other game last night Mid Champions DromInch beat South winners Kilsheelan Kilcash on a 2-10 to 0-12 scoreline.
Drom now meet Ballinahinch on Sunday while St Mary's play Thurles Sarsfields next Wednesday night.
