Mike Ross -- A run of games for Leinster has showcased his scrummaging power and brought on the other aspects of his game.
Damien Varley -- Has made giant strides in the last 12 months, filling the considerable void created by Jerry Flannery's injury problems.
Devin Toner -- Another to benefit from game-time with Leinster, gets his chance due to Paul O'Connell's injury and delayed return of Leo Cullen.
John Muldoon -- Has made a strong return from injury sustained in the summer against the All Blacks.
Isaac Boss -- International return sparked by eye-catching displays for Leinster and the injury to Tomas O'Leary.
Johne Murphy -- Superb for Munster, versatility a valuable asset for Kidney.
Shane Horgan -- Strong showing against Saracens, experience and physicality still in demand.
Jamie Hagan -- Shining for Connacht but loses out to familiarity and experience of Hayes.
Dan Tuohy -- Strong summer tour but has lacked opportunities with Ulster.
Shane Jennings -- Sean O'Brien's stunning form at open-side squeezes out fellow Leinster back-row.
Niall Ronan -- Not enough room for natural No 7 despite strong displays for Munster.
Fionn Carr -- Ireland's most exciting attacker misses out due to physicality focus for November.
Denis Hurley -- Just beginning to make his presence felt with Munster, but Horgan's experience wins out.
Leo Cullen -- A full 80 minutes this weekend could yet see second-row feature against South Africa.
Tomas O'Leary -- Hopefully back for latter part of series.
Luke Fitzgerald -- A key player who will be brought back in once his hip injury clears up.
Geordan Murphy -- Excellent for Leicester last weekend, English club commitments rule him out of South Africa opener.
Jerry Flannery -- Cursed by calf injury, medical assessment will determine November involvement.