Lansdowne maintained their challenge for the play offs with a 40-15 win over Terenure College and Ballymena remain very much in the hunt after their 66-12 Eaton Park victory over UL Bohemians.
In Temple Hill, Anthony Horgan celebrated his return to AIB League action with a hat-trick of tries in Cork Constitution's faclie 61-5 win over Co Carlow.
In Thomond Park, Shannon looked to be in total control when they led Garryowen 19 points to nil at the break thanks to a Colm McMahon try converted by Andrew Thompson> who also landed four penalties. However, it was a different story in the second half and Garryowen scored three tries - Paul Neville, Pat Humphreys and Dermot O'Sullivan - two of which were converted by Killian Keane, to earn a share of the spoils and end Shannon's outside hopes of making the play-offs.
Galwegians remain in the shake up following their 39-18 win over Dungannon in Crowley Park, and in the other games played in Division One, St.Mary's College were pipped 19-18 by Belfast Harlequins at Templeville Road while UCD defeated Blackrock College, 15-7 in Belfield.
In Division Two, leaders Dolphin were 18-9 home winners over Young Munster to maintain their position at the top of the tabel. They are closely pursued by Old Crescent who scored six tries - three in the first half from Shane Stephens - to beat Midleton 47-30 at Rosbrien, but Thomond, in third place at the start of the day, lost 23-17 to UCC at The Mardyke. Thomond's position in the table remains unaffected because Barnhall could only manage a 21-21 draw at home to DLSP.
In Division Three, leaders Waterpark beat third placed Corinthians 14-12 in Galway. Instonians remain in second after their 41-12 win over City of Derry and Wanderers pushed themselves into the play off picture following their 29-18 win in Clonakilty which moves them to third in the table.