Wales v Ireland: Teams

Wales captain Matthew Rees has called on his side to keep their discipline in Saturday's RBS Six Nations clash with Ireland.

Wales have been guilty of conceding 13 penalties and free-kicks on average per game in the championship.

And with Ireland opting to name kicking king Ronan O'Gara at fly-half, Rees knows that Wales can not afford to continue to make the same mistake.

Rees said: "The pressure is on us on Saturday, and the biggest issue for us is our own mistakes.

"We have to make sure we are accurate, disciplined and not make mistakes. The one thing that has frustrated me about us in the Six Nations is ourselves.

"We had two yellow cards against Scotland, which is unacceptable, and we gifted Italy two tries and we kept them in the game with ill-discipline.

"The message for us against Ireland is that we need to perform well for more than just 20 minutes.

"That is our biggest challenge, and if we can do that then I am sure the result will take care of itself."

Lunatic

Wales have made three changes to their back division for the match, with James Hook moved to fly-half and centre Jonathan Davies and winger Leigh Halfpenny coming into the starting XV.

Ireland lock Donncha O'Callaghan has warned Wales that Paul O'Connell will go to extraordinary lengths to disrupt their lineout.

The Irish lineout has struggled to perform this season, but O'Callaghan has backed O'Connell to inspire the pack at the Millennium Stadium.

And O'Callaghan claims his Munster team-mate has even go as far as learning Afrikaans in attempt to gain an advantage at the line-out against South Africa.

"I wouldn't even question any of Paul's calls," said O'Callaghan.

"I'd say if you went up to the video analysis room now, he'd be looking at Wales' line-outs from 1922 or something like that.

"We're lucky we have a lunatic like O'Connell who is willing to learn Afrikaans to pick off a few calls.

"I called up to his room one time and he had YouTube on and some woman counting to 10 in Afrikaans. I was like. 'what's going on here?'

"He was getting his ear in and to be fair he did pick off an awful lot of their calls. They started calling in a huddle."

Ireland coach Declan Kidney has opted to name the same squad for the clash following the victory over Scotland last time out.

Wales: 15 L Byrne (Ospreys), 14 L Halfpenny (Cardiff Blues), 13 J Roberts (Cardiff Blues), 12 J Davies (Scarlets), 11 S Williams (Ospreys), 10 J Hook (Ospreys), 9 M Phillips (Ospreys); 1 P James (Ospreys), 2 M Rees (Scarlets, capt), 3 C Mitchell (Ospreys), 4 B Davies (Cardiff Blues), 5 A-W Jones (Ospreys), 6 D Lydiate (Newport Gwent Dragons), 7 S Warburton (Cardiff Blues), 8 R Jones (Ospreys)
Replacements: 16 R Hibbard (Ospreys), 17 J Yapp (Cardiff Blues), 18 J Thomas (Ospreys), 19 R McCusker (Scarlets), 20 D Peel (Sale Sharks), 21 S Jones (Scarlets), 22 M Stoddart (Scarlets).

Ireland: 15 L Fitzgerald (Leinster), 14 T Bowe (Ospreys), 13 B O'Driscoll (Leinster, capt), 12 G D'Arcy (Leinster), 11 K Earls (Munster), 10 R O'Gara (Munster), 9 E Reddan (Leinster); 1 C Healy (Leinster), 2 R Best (Ulster), 3 M Ross (Leinster), 4 D O'Callaghan (Munster), 5 P O'Connell (Munster), 6 S O'Brien (Leinster), 7 D Wallace (Munster), 8 J Heaslip (Leinster)
Replacements: 16 S Cronin (Connacht), 17 T Court (Ulster), 18 L Cullen (Leinster), 19 D Leamy (Munster), 20 P Stringer (Munster), 21 J Sexton (Leinster), 22 P Wallace (Ulster)