Cork Constitution will take a wait-and-see approach to whether they can use Duncan Williams this weekend.

Former Leinster and Leicester Tiger hooker Gavin Hickie will start in the middle of the front row as St Mary's College go about maintaining their 100% start to the AIB League on the road to UL-Bohemian in round five on Saturday.

Blackrock College co-coaches Barry Gibney and Emmett Farrell bring in prop Sean Byrne to tight-head as their only change to the leaders' side to play Clontarf at Castle Avenue.

Cork Constitution will be looking to take revenge over Ballynahinch when they will meet in a an AIB Senior Cup second round repeat of last season’s final at Ballymacarn Park on Saturday.