Bangladesh coach Jamie Siddons felt his side blew a rare opportunity to press for victory in their final ODI.

New Zealand wrapped up the three-match series with a three-wicket win at AMI Stadium, although they endured a nervous finish as wickets tumbled before James Franklin - using a runner because of a heel injury - and Ian Butler got them across the line with 31 balls remaining.

After being put into bat, Bangladesh, led by a maiden one-day century from opener Imrul Kayes, made 241 for nine in their 50 overs.

New Zealand complete whitewash

But it should have been much more after they entered the final 10 overs at 191 for four with a powerplay remaining.

Instead of accelerating away like they had in Dunedin, when they plundered 92 runs in the closing stages at University Oval, the visitors could only add 50 runs to their total and lost five wickets in the process as New Zealand captain Daniel Vettori and Tim Southee turned the screws.

"We set the game up well with the bat then - and in an area where we had been doing well - we blew it really," said Siddons.

"We played poorly. The powerplay was taken and we didn't execute what we thought we would with four wickets down.

"We normally look to get 80 to 100 off the last 10 if we've got that many wickets in hand and we got 50 so we were 40 or 50 short.

"I guess they (New Zealand) would have batted a little differently if they were chasing 280 but it would have made a really tough total on that wicket."

Vettori also agreed to that.

"I think if they could have put 280 up it would obviously have been a challenging score because they put us under pressure with the way Shakib (al Hasan) bowled," the skipper said.

"There were a lot more runs in that wicket, so for us to put ourselves under so much pressure was a little bit disappointing.

"Probably some of the shot selection that led to some of the dismissals was the toughest thing but in the end, probably led by Martin Guptill and a couple of good partnerships, we got through and we are happy to take the win."

Guptill, who fell nine runs short of a second one-day ton, looked in good touch from the first ball he faced. His run-a-ball 91 included nine boundaries and three sixes.

"I'm feeling good at the moment so I'm just happy to get a score under the belt," the right-hander said.

"I'm always looking to score the big runs and I missed out in Dunedin. I obviously got off to great start there but to back it up here with a 90 I'm pretty happy with that."

While it was a far more convincing performance from Bangladesh, Siddons felt his side had not really shown what it was capable of during the series.

"We've taken a while to wind up without a doubt," the coach admitted. "We've taken a while getting used to being here.

"We're a much better side than we've shown, although we're still a team of 22-, 23-year-olds that are capable of inconsistent performances. But one that's very talented I think and going places.

"That's our best score against New Zealand in New Zealand so that's another positive that we'll take out of this series. The boys are confident we can beat this team but we need to play really well."

The final match of the tour - a one-off Test in Hamilton - starts on Monday.