The tourists, who began their fightback from 2-0 down with a 31-run win two days ago, completed the job at the same venue in Khulna thanks to an 18-run success this time.
Hamilton Masakadza hit 93 off 58 balls, the highest ever Twenty20 international score by a Zimbabwean batsman, as the visitors reached 180-4 in their 20 overs before dismissing Bangladesh for 162 runs.
Masakadza shared half-century stands for the second and third wickets with Richmond Mutumbani and Malcolm Waller and hit eight fours and five sixes in his stunning innings after Bangladesh won the toss and chose to bat.
Bangladesh’s reply got off to a miserable start as they collapsed to 17 for four, Neville Madziva (three for 34) seeing off both openers.
Mahmudullah (54) kept the outcome in doubt – but Tendai Chisoro (three for 17), like Madziva returning his best figures in this format, returned to bowl Mahmudullah after a 33-ball half-century as the home recovery fell short on 162 all out in 19 overs – despite some late hitting from Mashrafe Mortaza.
