Wins for Garryowen (42-24) over UCD and for Clontarf (28-0) in Stevenson Park, mean these sides will join Cork Constitution and Shannon in the semi-finals of the AIB League
Cork Con are home to Garryowen and Shannon home to Clontraf on April 13th. DLSP are relegated along with Young Munster.
In Division Two, UL Bohemians are promoted along with Belfast Harlequins while City of Derry and Wanderers are relegated.
In Division Three, Greystones and Trinity are promoted, Richmond are relegated and Bangor must play off with the winners of the round robin qualifier.