The Trevor Brennan inspired side need to win and gain maximum points and then hold their breath until the result comes in from Thomond Park where UL Bohemians entertain Midleton. Barnhall lost in Midleton last week and that defeat rankles particularly after they'd lowered the colours of High-flying Belfast Harlequins. So Crescent will have noted that result rather than the one from Towns Park and they'll know that in their own back yard Barnhall are a difficult side to beat.
At the bottom of the table, northern clubs will decide the fate of Dolphin and Wanderers. Dolphin head north to Portadown knowing that defeat could see them relegated if Wanderers were to gain maximum points from their home game with Malone. The very least the Cork side need is a bonus point.
(All kick-offs, 2.30pm). Barnhall v Old Crescent - Parsonstown. City of Derry v Ballynahinch - Judge's Road. Portadown v Dolphin - Chambers Park. Sunday's Well v Belfast Harlequins - Musgrave Park. Thomond v Old Belvedere - Liam Fitzgerald Park. UCC v Bective Rangers - The Mardyke. UL Bohemians v Midleton - Thomond Park. Wanderers v Malone - Merrion Road.