In naming the match-day squad for Saturday's test against Argentina in New Plymouth, the All Blacks' selectors will also have one eye on the test the following week against South Africa.
It is a juggling act; the selectors will probably want to name their strongest line-up to play the Boks in Albany on September 16, and so this match against the Pumas represents their last chance to have a look at other players in starting roles.
We will see how good the South Africans are this Saturday. They are undergoing an apparent resurgence and there is an increased confidence about them after their 3-0 French series win in June and Rugby Championship wins over Argentina, but until they play the Wallabies in Perth, I'm not convinced they have made the giant strides indicated.
So, Steve Hansen and his selectors could look at making some changes for New Plymouth (while building on the momentum gained by his side's last-gasp win over the Wallabies in Dunedin), and there will definitely be a change in the back three with Ben Smith, who played on the right wing in the two tests against Australia, now on a sabbatical.
Could Nehe Milner-Skudder come in there?