Star batsman Kane Williamson has guided New Zealand to a series-clinching five-wicket win in the second Test against Sri Lanka in Hamilton in record-breaking style.
Williamson struck an unbeaten 108 as the Black Caps got the 47 runs they needed on the fourth morning to finish on 5-189.
He took his 2015 Test aggregate to 1172, at an average of 90, to beat by eight runs skipper Brendon McCullum's 2014 record for most runs by a New Zealander in a calendar year.
The century was the stylish right-hander's fifth of the year - taking him past McCullum for most calendar Test tons.
It was also the 13th of his career, moving him level with another teammate, Ross Taylor, and with only Martin Crowe (17) ahead of the pair among New Zealand batsmen.
New Zealand resumed on Monday at 5-142 as they sought a 2-0 series sweep after their 122-run victory in Dunedin.
Williamson was on 78 and got himself going with the second ball of the day, turning a delivery from paceman Dushmantha Chameera behind square for four.
There were three more boundaries off Chameera before he brought up his century with another four off the same bowler through square leg.
Wicketkeeper BJ Watling, who was content to let Williamson do most of the scoring, ended on 13 not out.
Watling brought up the winning run with a swept single as New Zealand equalled their best unbeaten Test run at home of 13 matches, set between 1987 and 1991.
Chameera was the best of the Sri Lankan attack with 4-68 to add to his 5-47, his maiden bag of five, in the first innings.
The two sides now meet in a five-match one-day series beginning at Hagley Oval in Christchurch on Boxing Day.
MOST TEST RUNS BY NZ BATSMEN IN A CALENDAR YEAR
* Kane Williamson 1172 (2015)
* Brendon McCullum 1164 (2014)
* Williamson 929 (2014)
* John R Reid 871 (1965)
* Ross Taylor 866 (2013)
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