"Any match-up against our transtasman neighbours is a great occasion and although the game against Australia is only a one-off, it fits in well with what I want to do leading into the last two legs of the series (in Scotland and England).
"There are guys that haven't played for quite a while so this is valuable game time to see where they're at and I don't select my side for the last two tournaments until after this weekend's game, so players are playing for positions. It couldn't have worked out any better."
Despite a third-place finish in Tokyo, the worst result of a consistent season for New Zealand since losing in the quarter-finals in Dubai in round two, New Zealand still lead the series on 128 points, a narrow six points clear of Fiji.
South Africa are third on 105, one ahead of England and four clear of Samoa in fifth.
Tietjens' full squad assembled in Mt Maunganui on Tuesday, with Bay of Plenty's Jack Wilson and Waikato's Joe Webber and Johnathon Malo also brought in for the Australian game.
They underwent fitness and speed testing on Tuesday afternoon and yesterday morning before inter-squad games at Blake Park.