Victory against the All Blacks in Croke Park and Saturday would earn Declan Kidney iconic status after just two games in charge but it will depend on Ireland winning individual battles all over the pitch and a key man in that regard will be David Wallace.

The Munster flanker comes up against the finest exponent of the openside game in the form of New Zealand captain Richie McCaw and he has left little to chance ahead of his meeting with "best in the world".

In poring over tapes of McCaw, Wallace has discovered the Kiwi's ability to evolve with an ever changing game. Preventing him from setting the tempo on Saturday is crucial if the visitors' designs on a European Grand Slam are to be thwarted at Croke Park.

"As the game has evolved, so have McCaw's techniques. You can see him doing different things now that he didn't do before," he said. "You have to be on your toes to counteract everything he does. As an openside, he's the best in the world.

"It's said he sometimes plays from an offside position, but I don't agree with that.

"He just has little tricks up his sleeve - things that you might not even see unless you watch them several times over on the video.

"As players we all try to learn from each other. Hopefully, he'll be looking at us to learn a few things as well."

The contest will match opensides of contrasting styles - McCaw the master forager, who is unrivalled at the breakdown, and Wallace, a destructive ball-carrier.

"It's great when you come up against someone like McCaw because it puts you on full alert. You're not going to be complacent," he said. "You just have to make sure you're dominant at the breakdown. Any chink in our armour will be exploited and if we're not switched on, they will cause problems.

"Richie has such a wide range of talents and skills. Most things he does very well but he's prolific at robbing the ball or slowing it down.

"He's also brilliant at working off the backs and is a superb link man.

"His speed to the breakdown is great and he has superb technique when he gets there."

Should Wallace make an impression on McCaw, Ireland will have taken a major step towards ending their century-long wait for a victory over New Zealand.

The All Blacks are fielding their strongest side - directed by Dan Carter at outhalf and containing 618 caps - and will start the 22nd meeting between the rivals as firm favourites.

Encouragement can be drawn from the last three Tests, which saw Ireland succumbing narrowly after putting themselves in a winning position on each occasion.

"The last few times we've been down to New Zealand we've got close," said Wallace, who has lined up opposite McCaw in all three matches. "Croke Park will be a great place to play and to try and get our first win, but we're under no illusions as to how hard it will be.

"We've beaten Australia and South Africa over the last few years but New Zealand have managed to escape us.

"It does feel like we're edging closer to them bit by bit but you have to be careful not to become complacent.

"They played us here a few years ago and put up a big score. That brings home the reality of how good they are.

"We still need that fear to make us play that little bit better."