Williamson is yet to stamp his mark on the Chappell-Hadlee series, which heads into its deciding game on Monday in Hamilton, after destroying Australia in the Test series in November.

The Australians have now had Williamson caught three times in a row driving, the latest coming on Saturday when leg-spinner Adam Zampa dismissed him on debut.

Australia's bowlers changed their strategy against Williamson leading into the day-night Test in Adelaide by bowling less at his stumps and probing more around off. They have shifted their focus even wider outside off this series with great effect.

"I did my research a little bit against these players and tried to just stick to my plans," Zampa said.

"Luckily it worked, I tried to get Williamson driving."

Williamson denied he had been figured out, saying his dismissal on the weekend was the product of the need to up the scoring rather than proof of a weakness.

Australia's batting wonderkid, Steve Smith, has also made a slow start to the tour, twice dismissed cheaply by Kiwi paceman Matt Henry.

"Matt's bowling extremely well, taking early wickets and coming back superbly," Williamson said.

"They've got a very strong batting line-up with a lot of world-class players and it's important that all the strike bowlers are in form."

Selectors have called Western Australia's Joel Paris into the squad as cover after paceman Kane Richardson was sent home early for further tests on his back injury.

Paris, however, is unlikely to feature in the decider after Zampa's promising international debut.

Australia, the world No.1 in the ODI rankings by a considerable margin, are aiming to stretch their unbeaten run of series victories to eight. They have not been beaten in a series since the tri-series in August/September 2014 featuring South Africa and Zimbabwe.