Led by Sophie Devine's sparkling 161 off 117 deliveries, New Zealand have pulled off a staggering run chase to topple Australia by nine wickets and boost the hosts' morale heading into the Women's World Cup.
Just two days after losing to world No.8 Pakistan, the White Ferns easily hauled in Australia's 321 in Lincoln on Tuesday.
Devine put on a masterclass, carrying her bat and plundering bounderies off eight Australian bowlers, hitting the winning runs for a superb New Zealand victory with 41 balls left.
"She definitely had a day out ... probably could have got 200 to be fair. She still had seven overs," Australia vice-captain Rachael Haynes said.
There was plenty to like in Australia's batting, with Meg Lanning finding form and Alyssa Healy, Beth Mooney and Ashleigh Gardner also making half-centuries.
However, the Australian attack was found wanting in an alarming sign just four days from their tournament-opener with holders England.
The trans-Tasman match was an unofficial fixture, with both sides naming more than the allowed XI to give more of their squad a taste of conditions leading into the World Cup.
If the ICC accepted the scorecard, New Zealand would have completed the greatest ODI chase of all time - and against the world's No.1 side.
Devine shared a 119-run opening stand before Suzie Bates holed out to Grace Harris off Alana King's legspin.
That would be Australia's only wicket, with in-form first-drop Amelia Kerr (92 off 75) then combining with her captain to put on 206 off 141.
It was a day for captains as Lanning also regained her scoring touch after a failure in Australia's first warm-up on Sunday against the West Indies.
Lanning made 87 off 86 before holing out as she looked to up the run rate.
"She's been building towards it," Haynes said.
"She batted beautifully today and got a little tap on the shoulder because she was going to be retired but I think she could have batted all day."
The Australian skipper began as a support act to Alyssa Healy, who struck 64 off 71 in a superb start to the innings.
The 29-year-old flicked the switch off Kerr's bowling, striking consecutive boundaries in one over, then roosting a six over long on and a one-bounce boundary to mid-wicket to reach her half-century.
Lanning offered chances as she accelerated. Both Devine and Bates put her down before Hannah Rowe caught her at cow corner off the offspin of Frankie Mackay.
Mooney scored 55 off 51 and Gardner then sent Australia's run-rate into the clouds, bashing four sixes and six fours with her 60 off just 32.
Rowe was the pick of the Kiwi bowlers, finishing with 4-49 off 10, before the top-order White Ferns trio got the job done.
Australia start their campaign against England on Saturday, while the White Ferns face the West Indies on Friday in the tournament opener.
