Tongue out, Ross Taylor celebrates his 200. Photo / AP
Ross Taylor has brought up his double century by smashing a four through the covers against Australia in Perth.
He is currently 222 not out, with the Black Caps fighting back at 455 for 5, on the third day at the WACA.
Taylor has set a New Zealand record for the highest Test score against Australia with this unbeaten knock.
Martin Crowe previously held the record, having scored 188 in the Black Caps' win at the Gabba 30 years ago.
Fellow Black Cap's batsman Kane Williamson fell for 166.
Taylor shared a 265-run partnership with Williamson, a record for New Zealand's highest Test stand against Australia.
Earlier in the day, Kane Williamson's 12th test hundred at the Waca moved him a step closer to overtaking Martin Crowe as New Zealand's greatest centurymaker.
Williamson completed his second ton in the series against Australia with a cut backward of point from Mitchell Johnson. It had taken 158 balls and included 16 fours.
On 90 he whistled a cover drive off Mitchell Johnson just wide of Nathan Lyon at short cover, but otherwise he was relatively untroubled to move to his century. It was full of lavish drives and strokes through the onside and behind point, but built on a solid defensive structure.
He had to put up with a 17-minute delay early in the day when the power to the sightscreen failed. Mitchell Starc wanted to come around the wicket to Williamson, who requested the screen be moved. When it wouldn't the New Zealander rightly stood his ground.
Crowe sits atop the list with 17 centuries and Ross Taylor is on 12, along with Williamson and John Wright.
Williamson, 25, has spread his centuries around the globe, from India, to the United Arab Emirates to England and Australia, as well as at home.
The only ground on which he's scored more than one is the Basin Reserve, where he hit 102 not out to save a test against South Africa three year ago, and 242 not out to help beat Sri Lanka last season.
Crowe anointed Williamson last summer as the batsman who would overtake his records in time. That time may come sooner than may have been thought.
Today was his fifth century in his last 12 test innings.
Williamson is up to No 5 in the test batting rankings and has been the subject of the highest praise from Australians including in-form opponent David Warner and former great Allan Border, who nominated him as the batsman to play for his life.
Kane Williamson's test century sheet:
131, v India, Ahmedabad, 2010
102 not out, v South Africa, Wellington, 2012
135, v Sri Lanka, Colombo 2012
114, v Bangladesh, Chittagong 2013
113 v India, Auckland, 2014
113, v West Indies, Jamaica, 2014
161 not out, v West Indies, Barbados, 2014
192, v Pakistan, Sharjah, 2014
242 not out, v Sri Lanka, Wellington, 2015
132, v England, Lord's 2015
140, v Australia, Brisbane 2015
166 v Australia, Perth 2015
New Zealand batsmen with most test hundreds against Australia:
3: Martin Crowe
2: Bevan Congdon, Glenn Turner, Andrew Jones, John Wright, Kane Wiliamson
The 22-year-old's selection is about so much more than just statistics.