Shock of the day came in Eaton Park where the home side slumped to defeat against a St Mary's College side who were recording just their first victory in six outings.
Ballymena 6-9 St. Mary's College
Belfast Harlequins 24-23 U.C.D.
Buccaneers 20-14 Co. Carlow
Cork Constitution 28-25 Blackrock College
Dungannon 37-3 Galwegians
Lansdowne 13-21 Garryowen
Shannon 51-7 Dolphin (Sunday).
Clontarf - Free
Bective Rangers 10-6 U.L. Bohemians
Malone 14-20 Barnhall
Old Belvedere 29-5 Young Munster
Sunday's Well 22-28 Terenure College
Thomond 15-20 Old Crescent (Sunday)
U.C.C. 31-16 Midleton
Waterpark 24-23 Dublin University
Ballina 17-24 Queens University
Banbridge 22-20 Old Wesley
Connemara 6-10 Skerries
Corinthians 22-22 ClonakiltyHighfield 20-12 Ards
Instonians 9-9 Portadown
Greystones 53-17 Suttonians
Naas 6-28 Wanderers.
City of Derry - Free