New Zealand captain Richie McCaw wants the world champions to "take a step up" when they tackle Millennium Stadium opponents Georgia tonight.
The unbeaten Pool C leaders have seen off Argentina and Namibia so far, and there appears to be little that can stop their march back to Cardiff later this month for a probable quarter-final with Ireland or France.
"Performance-wise, we need to take a step up," McCaw said.
"We have all had a run in the first two games, so there are no excuses for not being ready to go.
"There has been a bit of an edge this week in terms of putting right the things that were a little bit off in those opening two games. If we get them right, we will hopefully get a good performance.
"When you haven't played for a while there is always a bit of rustiness.
"You don't like to use it as an excuse but I think that was what let us down last week against Namibia. The guys were trying hard but were making some crucial mistakes. You can't afford to let that happen."
All Blacks coach Steve Hansen has made 10 changes for the clash, which sees New Zealand playing Georgia for the first time.
McCaw added: "I don't think you need to be playing against a new side like Georgia to keep you fresh. The fact that we are going into the third game of the World Cup means there is a bit of an edge there, regardless of who the opposition is.
"We understand who we are up against, but the main focus is about us getting our game spot-on. The excitement we have got from that is enough."
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