Captain Meg Lanning scored her 14th ODI hundred to star in Australia's chase of 253 to take their streak to 20 wins, while also claiming the series with a game to spare at the Allan Border Field on Monday, 5 October.
Lanning delivered yet another masterclass in chases, scoring her ninth century in second innings of ODIs. She brought up her ton with what was to be the final ball of the match, hitting a boundary backward of point to script another dominant finish for Australia. Lanning's efforts were brilliantly complemented by Jess Jonassen and Rachael Haynes.
Jonassen led a bowling fightback to keep the visitors down to 252/9 after a 93-run partnership between Sophie Devine and Amy Satterthwaite for the second wicket had put New Zealand in line for an even bigger total. Haynes helped set the tone in the chase with a superb 82.
Australia responded to the challenging target with a characteristically attacking fashion, with Haynes and Lanning laying the foundation for a successful chase with a 117-run second-wicket partnership.
After Alyssa Healy was bowled by Sophie Devine for a rapid 21, Haynes and Lanning adopted a slightly more watchful approach initially, upping the tempo as the partnership progressed.
With the experienced duo at the crease, Australia looked well in command. Haynes hit 13 fours and a six in her 89-ball 82 before becoming Devine's second victim.
Haynes dismissal, however, sparked a New Zealand resurgence with Amelia Kerr striking three quick blows to have the hosts slip from 166/2 to 196/5. Beth Mooney was trapped plumb in front playing defensively, while Sophie Molineux and Ashleigh Gardner fell while attempting attacking strokes.
Lanning kept her composure at the other end and found solid company in Annabel Sutherland, the 18-year-old displaying maturity in her maiden ODI innings. When the youngster was dismissed Australia were only eight runs short. Lanning finished the game off with a boundary to also bring up a well-deserved century.
Earlier, New Zealand enjoyed a fine start to their innings with Natalie Dodd and Devine adding 75 for the opening wicket. After Dodd missed a sweep and was dismissed for 34 by Molineux, Satterthwaite continued in the same vein and the visitors looked in command while the second-wicket stand was in progress.
But things started slipping when Devine top-edged a sweep to fall for 79. Molineux took a sharp return catch to send Satterthwaite back just after New Zealand crossed 200.
Katey Martin (26 off 14) and Maddy Green (21 off 13) were able to provide late impetus but Jonassen dismissed them both in the 49th over to curb New Zealand's chances of an aggressive finish. She finished with 4/36 in her 10 overs.
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