(matches Saturday at 2.30, unless stated)
Old Belvedere v Blackrock Coll, Anglesea Rd, tonight 7.30
The burden of champions is weighing heavily on Belvo. Phil Werahiko will go with the same team that played well in patches against Lansdowne without getting the desired result. 'Rock are faring no better. They have been beaten three times with a solitary bonus point the only reward for their efforts.
Clontarf v Lansdowne, Castle Avenue, tonight 7.30
Coach Andy Wood has returned 'Tarf to the top of the table. Captain Barry O'Mahony should recover from injury. Collie O'Shea, Noel Reid and Aaron Dundon are back from Leinster 'A' duty. Lansdowne should have Leinster 'A' muscle back in the shape of props Martin Moore and Jack O'Connell.
St Mary's College v Dolphin, Templeville Rd
Coach Peter Smyth is waiting on several players' fitness before he bids to make it two wins from four.
UCD v Bruff, Belfield
Leinster's only representatives in this division will get nothing easy from doughty competitors Bruff.
Greystones v DLSP, Dr Hickey Park, tonight 8.0
There is nothing like a keen rivalry to wipe away the advantage of form. Captain Barry Holmes will start his second match of the campaign. Salmo coach David Murphy must be chuffed with three wins, two of them for bonus points to lead the division. Conor Power Senior is back at number eight
Bective Rangers v Queen's University, Donnybrook
Rangers will have to be on their toes to put an end to Queens' three-match unbeaten sequence. Former Galwegians' lock Joe Moran is showing up well in what could be an unchanged side.
Terenure College v Malone, Lakeland's Park
Director of Rugby Ian Morgan has been struggling for bodies. Home advantage could be the main ingredient in 'Nure moving into the top half of the table.
Corinthians v Dublin University, Corinthian Park
Trinity coach Tony Smeeth has been limited to Leinster opposition so far. Corinthians are one of only three unbeaten clubs in this Division.
Instonians v Old Wesley, Shaw's Bridge
Wesley captain Greg Jacob has to have an operation on a groin injury. Hooker Matt Crockett has taken over the lead-by-example attitude.
Old Crescent v Seapoint, Rosbrien
Jonathan Walsh is back at number eight and Conor Mills replaces the injured Danny Ruddock on the wing.
Wanderers v Suttonians, Aviva Stadium, tonight 8.0
The Merrion Road club's dire early season form has led to a change of coach already, from Greg McWilliams to James Wynstanley. Suttonians have been reasonably good without setting the world on fire.
Boyne v Navan, Drogheda
These are two ambitious clubs. Coach Craig McGrath wants his third win in four. For Navan, Christian Sullivan comes into the back row for Shane Dawson and Maurice McCauley is selected on the left wing.
Naas v Cashel, Forenoughts
Eighteen-year-old full-back Ryan Casey is making a positive impact for a Naas side that could do with their first win at home to leaders Cashel.
Ards v NUIM Barnhall, Hamilton Park
This has all the appeal of a basement scrap. Coach Denis Bowes may be able to recall the previously injured Eoin Hogan, their key player at fly-half.