New Zealand 219 for 7 (Guptill 97, Williamson 53, Neesham 45*, Kane Richardson 3-43) beat Australia 215 for 8 (Stoinis 78, Philippe 45, Sams 41, Santner 4-31) by four runs
Dunedin: The New Zealand cricket team beat Australia by four runs at University Oval, Dunedin on Thursday, to take a 2-0 lead in the five-match series.
Martin Guptill's 97-run knock helped NZ post 219/7 in 20 overs before the Aussies were restricted to 215/8.
Marcus Stoinis' 37-ball 78 wasn't enough as Australia failed to get past the line.
Guptill and Kane Williamson (53) added 131 runs for the second wicket to hand NZ the perfect start.
From 173/2, NZ were restricted to 199/6 as they finished with 219 on the board.
Jimmy Neesham's 16-ball 45* was instrumental.
In reply, Australia were reduced to 113/6 before Stoinis and Daniel Sams added 72 runs.
Mitchell Santner's 4/31 did the damage as NZ clinched victory.
Guptill became just the third player in T20I history to surpass the 2,700-run mark (2,718) after Virat Kohli and Rohit Sharma.
Guptill hit his 16th half-century in T20Is.
The senior opening batsman smashed eight sixes in his knock.
Guptill now has 132 career T20I sixes (highest).
He went past Rohit's tally of 127 sixes.
He also became the fourth batsman with 240-plus fours.
Williamson hit a 35-ball 53 and registered his 13th T20I fifty. This was his best score against the Aussies. Williamson has raced to 1,788 career T20I runs and went past Tamim Iqbal's tally of 1,758 runs.
Marcus Stoinis hit an entertaining fifty, laced with seven fours and five sixes.
This was his maiden fifty in T20Is.
Mitchell Santner has raced to 59 career T20I wickets.
He went level with Jasprit Bumrah and Mohammad Amir (59 each).
Santner is now the third-highest wicket-taker for the Kiwis in T20Is.
He got past Nathan McCullum's tally (58).