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New Zealand wrapped up a 2-0 Test series victory over Sri Lanka by winning the second match by five wickets on day four in Hamilton.

Resuming on 142-2 on Sunday having recovered from 11-2 on day three, the Kiwis reached their target of 189 without further loss.

Kane Williamson, who resumed on 78, finished unbeaten on 108.

It was his fifth century of the year - a Kiwi record - and he set another for most New Zealand runs in a year.

Williamson, who has now made 13 centuries in his 46 Tests, finished the series with 268 runs at an average of 89.

New Zealand won the first Test in Dunedin by 122 runs.