Six Nations: O'Callaghan focuses on Ireland discipline
Six Nations: WALES v IRELAND Venue: Millennium Stadium, Cardiff Date: Sat, 12 March Kick-off: 1700 GMT Coverage: Watch live on BBC One Wales, BBC One HD and online from 1635-1900; Listen on BBC Radio Wales, BBC Radio Cymru & BBC Radio 5 Live; Text commentary on BBC Sport website and mobiles
Donncha O'Callaghan believes Ireland's discipline must improve in order to beat Wales in the Six Nations clash.
Coach Declan Kidney gave the team a stern warning on conceding penalties at a meeting last week after indiscipline in the narrow win against Scotland.
"Whoever was in on our meeting with Declan wouldn't want to be on the end of a silly penalty this weekend," said the Munster lock.
"Everyone knows Declan as really calm and composed, but he let fly."
O'Callaghan added: "It has been a while since he lost his temper. I can remember one or two with Munster, but it's fair to say he was fairly annoyed.
"We know him so it's tough for him to be that blunt and direct. It's a side to him that you don't like to see too much.
"You can say you should self-police within the team and Paul O'Connell and Brian O'Driscoll were saying that, but none of it would carry the weight like when it came from Declan at the meeting.
"You could see it's the main man calling the shots and guys don't want to re-offend."
it's getting the balance right between the crazy, stupid ones that just cost your team.
Kidney delivered his rebuke to the players during the meeting to analyse the 21-18 victory over Scotland, a result that saw them hammered 13-4 on the penalty count.
"There's a balance to strike because you don't want to be playing with 15 altar boys," said O'Callaghan.
"There are certain balls you have to contest, and there are certain penalties we're going to give away.
"But it's getting the balance right between the crazy, stupid ones that just cost your team.
"We gave away 12 penalties and they say in international rugby you tend to give away eight, so exactly, we had four stupid penalties and you can control those ones.
"It's just the ones that you can control that are the massive problem and it spreads across everything, really, error rate and stuff like that."
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