Top of the table Instonians entertain third placed Queen's at Shaw's Bridge tomorrow in what promises to be a keenly fought local derby.
Clem Boyd's men have won their three opening games, taking a bonus point in each, while the students have also won all their games.
"Both sides are unbeaten but both sides haven't played well yet," said Boyd.
"Queen's are a very competitive team. We'll target them up front but they have an experienced front row and Ian Whitten is their main go-through man.
"We'll try and play a game the purists will appreciate."
Queen's have injury doubts in the back row with Carl Brennan struggling with a hamstring injury and Paddy McGowan suffering from a chest infection.
Full back Greg Taylor is also a doubt but if all three pass late fitness tests there will be no changes to the side that saw off Corinthians at the Dub last week.
Fourth-placed Banbridge have an injury doubt over full back Stuart Wilson for the visit of Naas to Rifle Park.
No 8 Andy Kennedy will start after making his Barbarians debut in Wednesday's game against the Combined Services in Plymouth.
If Wilson is fit, Banbridge will be unchanged from the one that took a bonus point at Nenagh last week.
Rainey are forced to make three changes from the side that beat Connemara last weekend for the trip to Old Wesley.
Young prop Stuart McDowell replaces the injured Paul Hawkins in the front row, while Andy Kerr and David Dawson form the second row partnership with Evan Stewart in the back row.
Ards travel to Sunday's Well plagued with injury problems.
City of Derry are hoping their back row can provide a launch pad for their first win of the campaign when they host Corinthians at Judges Road.
Peter McFeeley starts at blindside flanker, Mark Walker is on the openside and David Huston moves to No8.