CORK CONSTITUTION stayed in contention for Division 1A honours with a vital 22-13 away success over St Mary's College at Templeville Road.
After losing at home to Garryowen, it was a must-win match for Cork Con and they responded in excellent fashion, with half-backs Gerry Hurley and Johnny Holland playing prominent roles.
The remaining game in the top flight saw second-from-bottom UL Bohemians record a 27-24 away victory over Old Belvedere.
Both sides scored three tries in an entertaining encounter. Josh Glynn and Eddie Devitt (two) went over for Old Belvedere, while UL Bohs responded through Mossie Lawlor, Ian Condell and David Johnson.
Ballynahinch have opened up a nine-point gap at the top of Division 1B following a 26-22 home victory over their nearest rivals Dublin University, with Michael Lawton converting two late penalties to secure the victory.
Wing Sam Coghlan-Murray was again impressive, scoring two tries as UCD scored a runaway 32-3 home victory over rock-bottom Ballymena.
Elsewhere, Blackrock continued their revival with a 23-20 home success over Malone, while a penalty try in injury-time gave Dungannon a 12-10 victory in the relegation battle against Bruff.