Back to back boundaries from Will Young sealed the fate of the visitors as New Zealand beat Bangladesh by 8 wickets with 172 balls to spare.
Trent Boult was named the player of the match after picking up 4 wickets conceding only 27 runs.
Hasan Mahmud and Taskin took one wicket each for Bangladesh. Nicholls remained not out at 49 from 53 balls.
Hasan Mahmud has picked up Conway as he tried to chip Hasan to deep square only ending up lofting it over the infield. Mahmudullah took a comfortable catch.
Despite breaking the partnership, Bangladesh has to defend a measly 12 run. New Zealand are 2 down at 119.
After the batting collapse, Bangladesh managed to score only 131 losing all wickets. In response, the New Zealand side is cruising smoothly being only 19 runs away from victory. They have scored 114 losing only 1 wicket.
Martin Guptil was picked up by Taskin after scoring 38 from only 19 balls. Henry Nicholls and Devon Conway have scored unbeaten 46 (50) and 23 (47) respectively.
New Zealand need 18 runs in 31 overs.
Tigers scored 85 runs losing six top-order batsmen. Mahmudullah and Mehedi are on the field with 5 and 7 runs respectively.
Fall of wickets: 1-19 (Tamim Iqbal, 4.1 ov), 2-19 (Soumya Sarkar, 4.4 ov), 3-42 (Liton Das, 13.2 ov), 4-69 (Mushfiqur Rahim, 21.1 ov), 5-72 (Mohammad Mithun, 23.2 ov), 6-78 (Mehidy Hasan Miraz, 27.2 ov)
Bangladeshi batsmen struggling to score runs against a quality bowling attack of New Zealand.
They reached the 50-run mark after 16 overs at 3.09 runs per over losing 3 wickets.
Liton was the third batsman to depart for 19. Jimmy Neesham picked up his wicket.
The Tigers only managed to hit 3 boundaries and 1 over boundary so far in 16 overs.
Bangladesh lost two early wickets in no time.
Skipper Tamim Iqbal was the first to go. He was trapped LBW by a swinging delivery by Trent Boult in the very first ball of the 5th over. He did show some positive intent before going back to the pavilion fo 13 off 15 balls.
Soumya then came in and went back for a duck. Boult picked up both the wickets in his double-wicket-maiden over.
Bangladesh are 20/2 after 5 overs.
New Zealand skipper for the series, Tom Latham, won the toss on his 100th ODI and invited Bangladesh to bat first in the first ODI in Dunedin.
All-rounder Mahedi Hasan makes his ODI debut as Bangladesh field a balanced side for the first match of the series.
Najmul Shanto missed out while Soumya Sarkar replaces him at no:3. Tamim will open the innings with Liton.
Mustafiz will lead the pace attack with Taskin and Hasan Mahmud.
New Zeland handed debut to three players - Daryl Mitchell, Will Young, and Devon Conway.
Bangladesh eleven: 1 Tamim Iqbal (capt), 2 Liton Das, 3 Soumya Sarkar, 4 Mohammad Mithun, 5 Mushfiqur Rahim (wk), 6 Mahmudullah, 7 Mehidy Hasan Miraz, 8 Mahedi Hasan, 9 Hasan Mahmud, 10 Mustafizur Rahman, 11 Taskin Ahmed
New Zealand eleven: 1 Martin Guptill, 2 Henry Nicholls, 3 Devon Conway, 4 Tom Latham (capt & wk), 5 Will Young, 6 James Neesham, 7 Daryl Mitchell, 8 Mitchell Santner, 9 Matt Henry, 10 Kyle Jamieson, 11 Trent Boult