2nd Test: Carey guides Australia to three-wicket win in Christchurch

Alex Carey scored a magnificent 98 not out as Australia chased down their 279-run victory target to beat New Zealand by three wickets before tea on the fourth day of the second test in Christchurch on Monday, sweeping the series 2-0.

Rain at Hagley Oval delayed the start of Australia's pursuit of the 202 runs they still needed for victory and New Zealand skipper Tim Southee struck early to dismiss Travis Head and reduce the tourists to 80-5.

Carey and Mitchell Marsh (80) both had scares but put together a partnership of 140 for the sixth wicket to subdue the crowd and take the visitors to within 60 runs of their target.

Ben Sears (4-90) revived New Zealand hopes of a first home win over their neighbours in 31 years when he removed Marsh and Mitchell Starc in successive balls but Carey and skipper Pat Cummins (32) got Australia across the line on 281-7.

"It was pretty tense," said Cummins, who hit the winning runs with a four to the point boundary.

"I think the story of this series was in key moments, someone stood up and made themselves a match-winner so yeah, keep finding ways to win. It's a pretty awesome squad."

Southee, who with fellow stalwart Kane Williamson was playing his 100th Test, said he thought the contest had been a great advert for the longest form of the game.

"I think obviously the partnership with Mitch Marsh and Alex Carey ... just sort of broke the back of our attack," he said.

"When you are playing against the best side in the world, you've got to be a bit better for a bit longer."

Southee gave New Zealand the perfect start to the day when he removed Head with the eighth delivery of the opening session.

In retrospect, however, Rachin Ravindra fumbling a straightforward catch that would have sent back Marsh for 28 off the previous delivery was perhaps the more significant moment.

Wicketkeeper Carey, who took 10 catches behind the stumps over New Zealand's two innings, came out to join Marsh and they moved towards the target at a fair lick, picking up their eighth and ninth test fifties respectively.

Carey kept his wicket by virtue of reviews when he was on 19 and 37, while Marsh was saved on 55 when the technology showed the tiniest bit of bat on a Glenn Phillips delivery that hit him on the toe.

Lunch came and went with the atmosphere flat but the crowd burst into life when seamer Sears was brought on and trapped Marsh lbw before having Starc caught by Will Young at square leg.

Cummins came in to fend away the hat-trick ball and Carey survived another scare when Phillips failed to reach a tough catch that would have given Sears a five-wicket haul on his test debut.

The New Zealand bowlers lacked nothing in effort but edges flashed wide of the cordon and anything on the stumps was blocked as Australia's target ticked down.

Carey was ultimately denied his second test century but will care little as he and his captain steered the side to a sixth win in seven tests over the Australasian summer.

The Black Caps remain with just one test win in 24 attempts against their closest rivals this century, while the victory will see the Australians move above them into second place in the World Test Championships standings behind India.