Martin Guptill became the fastest New Zealand batsman to reach a half-century in ODI history as they breezed past Sri Lanka with a ten-wicket victory on Monday.
The 29-year-old reached the landmark off 17 balls, beating Brendon McCullum's record of 18 in February's ODI against England.
Matt Henry (4-33) and Mitchell McClenaghan (3-32) did the damage early, with Sri Lanka dismissed for just 117.
Openers Guptill (93 not out) and Tom Latham (17 not out) reached the score after just 8.2 overs to extend their lead to 2-0 in the five-match ODI series.
Henry and McCenaghan dismissed Tillakaratne Dilshan (7) and Lahiru Thirimanne (1) early, before Henry took out Danushka Gunathilaka (17) in the next over.
Dinesh Chandimal (9) was the next to go, before McClenaghan took his third wicket after dismissing Milinda Siriwardana (9).
Chamara Kapugedera (12) was run out in the same over, before Henry bowled Sachithra Senanayake (0) in the next over.
Ish Sodhi took a wicket with Dushmantha Chameera (9), with Nuwan Kulasekara (19) the last to go for the Sri Lankans.
Guptill put on a show in Christchurch, hitting eight sixes and four nines to reach a staggering tally of 93 from just 30 balls as New Zealand sealed a ten-wicket win to take a 2-0 lead in the five-game series.