'We weren't good enough in second half against a 15-man team' - Ian Foster

New Zealand head coach Ian Foster admitted that the indiscipline costed them the second Test against Ireland played in Dunedin on Saturday.

Leicester Faingaanuku was sin-binned in the 16th minute for a dangerous tackle on Mack Hansen while Ofa Tuungafasi followed him in the 24th minute for a tackle off the ball on Garry Ringrose.

The decisive blow came in the 31st minute when replacement Angus Taavao was sent-off for a dangerous tackle on Ringrose which meant the All Blacks had to play the second half with 14 players after trailing Ireland 7-10 in the opening half.

The pressure eventually got the better of Foster's men, who succumbed to a 12-23 defeat after Andrew Porter scored two tries and Johnny Sexton contributed 13 points for Ireland steering them to their first win over the All Blacks in New Zealand.

"We hate losing, it was a game with a whole lot of twists and turns, and things happened, but we just weren't good enough in that second half against a 15-man team," he said.

"There were clearly strong messages sent out last week. There was a feeling we should have had four yellow cards last week. And it seemed to be the mindset that went into this game," he said.

"If you look at our cards you have to look at them singly. We get the Leicester [Fainga'anuku] one, I think that's just incredibly unfortunate, but they're the rules. I don't think there's anything in that one.

"Ofa [Tu’ungafasi] we accept and Angus [Ta'avao] we accept, I think most people could see a change in direction, a big prop reacting and a collision that's pretty unfortunate," he said.