If Ballynahinch are to make the end of season play-offs in Division 1A they will have to start winning on the road.
Derek Sufferin’s side are fifth two points behind Cork Con but have yet to win away from Ballymacarn Park this season.
Hinch will look to rectify that record as they travel to Dublin to face relegation threatened St Mary’s.
“It’s a huge game for us, we’re conscious of our away record and the fact that they’re are in ninth but we’ve got to go there with belief and confidence,” said Sufferin.
“We know that we mustn’t concede early and stay close to them or of course ahead of them for as long as possible as that way the pressure (of being ninth) will probably tell on them.”
Ruaidhri Murphy returns to the front row after recovering from a hand injury and is joined by Kyle McCall and Johnny Murphy at the coal face.
Jonny Simpson, Stuart Orr and Craig Trenier are all injured so Chris Stevenson is on the bench.
David McGuigan is out, Charlie Butterworth, Paul Pritchard and Michael Graham form the backrow.
Stuart Morrow comes into midfield and Rodger McBurney makes the bench.