New Zealand say they will aim to put together a full 80-minute performance in their Rugby World Cup clash with Japan next week after overcoming Tonga in the opening game of the tournament.
Friday's six-try 41-10 win over Tonga in Auckland was less than perfect for the Cup favourites and All Blacks captain Richie McCaw admitted to being frustrated during the victory.
"We'll have to assess that. We did some good stuff early in the game but we want to make that happen for the full 80 minutes," said the 30-year-old, who saw his side produce a fine first-half display but fade after the interval.
The open-side flanker said New Zealand wasted chances early in the second half to punish Tonga on the scoreboard and their forwards would need to improve as the tournament progressed.
"The Tongans played their part defensively. We wanted to keep our structure during the second half. The things we practised came off well in the first half," he added.
"I think there were some good patches [but] in the second half we spent a bit of time in their 22 and we didn’t actually capitalise, so I suppose that is something that we will have to work on.
"For the most part I think we did some good stuff early and we just have to make sure we do that for the full 80 minutes."
Coach Graham Henry blamed opening game tension for New Zealand's failure to capitalise on Tonga errors but he added that heightened expectations from scoring 76 points in their opening World Cup game in 2007 was a poisoned chalice for his side.
Henry was not so happy with the prolonged period of scrummaging which preceded Tonga's try, saying it was a "very boring" part of the game.
And he will be looking forward to their match against Japan in Hamilton, hoping to forget an uninspiring opening victory.
"The less repeats we have of that [against Tonga], the better," said Henry. "Bit of work to be done.
"I'd say [it was a] six or seven out of 10. It's early in the tournament, there's a bit of tension, we've been waiting a long time for this.
"Scored some good tries, defended well, made too many mistakes, gave away too many penalties."
Tonga coach Isitolo Maka said his side let themselves down in the first half as they trailed 29-3 at the break.
"I was disappointed with the first half. We had trained well all week. The second half produced some better defence," said Maka.
"We had huge support. I take my hat off to Tongans all over the world, they always get behind the team.
"We wanted to keep the ball for as long as possible in the second half because (if) they can't have the ball, they can't score a try."
However, captain Finau Maka said there were positives to take out of the game which saw a significant improvement from a side heavily beaten in two of three previous clashes between the teams.
"The All Blacks were more committed in the first half than we were, they beat us at the breakdown. Every time we made a mistake they scored," he said.
"There was some good, positive stuff in the game and we can look forward to the future."
Tonga's next fixture is against Canada on Wednesday.
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