Tonight's test match is not only the first time the Ferns have played in Perth since 2004 and Wai Taumaunu's coaching debut, but it also sees a New Zealand side facing Australia without Casey Williams and Katrina Grant.
The injured duo have generally been the preferred pairing against the Diamonds; Williams, acknowledged as the best defender in the game, is always the first name on the team sheet while the 1.86m Grant is the specialist stopper versus Australia.
"Katrina's strength is on the low ball," former Ferns coach Ruth Aitken told the Herald on Sunday earlier this year. "She is a really nuggety defender; she works really hard at ground level and that is why traditionally she has been the go-to-girl in terms of combating the Australian style."
In contrast, the taller Leana De Bruin (1.90m) has mostly been the option against the tall timber of Jamaica while Anna Scarlett has been the impact player in recent years; someone who comes on to do a specific job, whether to put on a shooter on a roll or disrupt the midcourt feeding into the circle.
Now they need to be the defensive pillars, with the severely inexperienced Kayla Cullen and Sulu-Tone Fitzpatrick (two caps apiece) the only other options. De Bruin and Scarlett are the old firm, having made their debuts back in 2002 and 2003 respectively, though they have not played together much in recent times.