Coach Steve Hansen's extended World Cup trial continues when an under-strength All Blacks meet Argentina in Nelson.
Fresh from their Bledisloe Cup extermination of Australia, the world champions are short-priced favourites to swamp the Pumas on Saturday.
New Zealand have never lost in 26 Tests against the South Americans, who are yet to come within 15 points on Kiwi soil.
It has allowed Hansen to pull apart his first-choice team, just as he did in the dead rubber third Test against France in June.
Player welfare in a busy season is one reason but the chief motivation is to assess the merits of players who have much to prove ahead of next year's bid for a third successive World Cup crown.
In the starting backline, fullback Ben Smith is the lone obvious first-choice selection. Owen Franks, Brodie Retallick and Kieran Read are the are the only equivalents in the pack.
Richie Mo'unga's maiden start at five-eighth ahead of Beauden Barrett will be keenly observed by Hansen, along with the performances of recalled wing Nehe Milner-Skudder, prop Karl Tu'inukuafe, reserve halfback Te Toiroa Tahuriorangi plus flankers Shannon Frizell and Ardie Savea.
Frizell, the brother of NRL star Tyson Frizell, will hope to make the same impact as another fringe blindside flanker - Vaea Fifita - in last year's equivalent Test in New Plymouth, when Argentina bombed a seven-point lead with half an hour remaining.
That match, and the Pumas' shock win over South Africa last month, should be enough to keep the All Blacks players on edge, Hansen said.
"We're expected to beat them, that's the external expectation.
"But we think they're a challenging side to play. They've got plenty of pace if you have a look at the highlights of the last Test so there's no thought that this is something that's just going to happen."
Hansen hopes the diminutive Milner-Skudder can make an immediate impact in what will be his third coming at Test level, having undergone two long periods of injury rehabilitation.
The elusive 90kg winger provides an intriguing point of difference in an international rugby scene increasingly dominated by giant backs.
"He's more of a jinker and a jiver," Hansen said.
"What he's doing is inspiring young kids, by saying 'You can still make it as an All Black at my size' and I quite like that. He'll light the place up at some stage I'm sure."
The All Blacks are playing their first Test in Nelson, where temporary seating has nearly tripled Trafalgar Park's capacity to 21,800.
