Half-centuries by Munro, Devcich give New Zealand 15-run win in only T20I against Bangladesh
Munro smashed an unbeaten on 73 off 39 balls after Devcich, the debutant opener, had hit 59 off 31 to lift New Zealand to 204 for 5, its second highest total in the format behind the 214 for 6 against Australia in 2010.
New Zealand, beaten in all three One-Day Internationals after a drawn two-Test series, restricted Bangladesh to 189 for 9 in front of some 35,000 disappointed home fans at the Shere Bangla National Stadium.
Faced with an asking rate of more than ten runs per over, Bangladesh made a shaky start when it lost three wickets in the first two overs for 19 runs. Southee, who finished with 3 for 38, dismissed both Shamsur Rahman and Ziaur Rahman, the openers, in the first over before Mitchell McClenaghan removed Mominul Haque in the second.
Mushfiqur Rahim, the Bangladesh captain, and Nasir Hossain retrieved the situation with a 54-run stand for the fifth wicket, but their dismissals in successive overs left Bangladesh 120 for 6 in 12 overs. Mushfiqur fell to Corey Anderson after making 50 off 29 balls, his maiden T20I half-century, which contained seven fours and a six.
Nathan McCullum took a brilliant return catch in the next over to oust Nasir for 28 off 20 balls.
Munro, 26, hit three fours and five sixes for New Zealand, as he built on the ten boundaries and a six hit by Devcich. Bangladesh was left to rue shoddy catching after Al-Amin Hossain, the debutant, dropped Devcich, who was then on six, in Mashrafe Mortaza's first over.
Al-Amin made amends by grabbing two wickets in the final over to finish with 2 for 31 in four overs.
New Zealand will now travel to Sri Lanka for three ODIs and two T20Is, with the first ODI starting on November 10.