Ireland were comprehensively defeated 21-9 by world champions New Zealand in Dublin in the second match of their two international games fixtures.

The All Blacks scored three tries, Ireland's none and deserved the victory fully though allegations of over physical tackling resulting in numerous Irish injuries were made after the game.

Two weeks ago in Chicago Ireland pulled off one of the great victories when defeating the All Blacks for the first time in over a century of trying.

Clearly stung by that defeat the All Blacks came thundering onto the pitch in Dublin and gave no quarter in what was an intense physical game. Three Irish players including key out half Johnny Sexton were off injured by the 22nd minute and at times referee Jaco Peyper came in for special criticism for not protecting the Irish players.

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It only took the All Blacks less than 3 minutes to register their first try when Malaki Fekitoa went over after gathering a cross kick.

Soon after, in very controversial circumstances, one of Ireland's key players Robbie Henshaw was injured after a high shoulder tackle and was taken off.

New Zealand scored again when outhalf Barrett coolly outfoxed the Irish defence with a trademark run, though the Irish bitterly complained he had not grounded the ball

At halftime the score stood at 14-6 and Ireland had 66 per cent possession in the second half but could not get a vital try.

In the end it was Fekitoa who did the business after a slick passing exercise across the New Zealand backline saw him score.

Ireland kept plugging away but to no avail and the All Blacks ran out  the clock claiming a deserved victory.

Irish coach Joe schmidt was reluctant to address the physicality issue after the game "I thought we probably didn't get the rub of the green on one or two calls, but that's something that can be a distraction," said Schmidt.

"We'll leave that to the authorities, we'll feed our feedback through the appropriate channels."

All Blacks coach Steve Hansen was adamant his team was not dirty and should not have been called on controversial tackles.

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"I don't think so, this is a moving game. The first one where we got penalized was a head clash.

"The one on the far side was obviously a little high and across the shoulder but I don't think there was any malice in it.

"Rugby is a shifting game when you've got ball carriers that move as well as the Irish do, they are going to change direction so people are going to sometime make mistakes and sometime people fall into tackles.

"The penalty count concerns me."

When he was pushed on dirty play, he said: "I'm not sure where you're going with this, do you want me to tell you we're a dirty side or something? Is that what you're saying?"