Zimbabwe beat Bangladesh by 13 runs in the second one-day international in Harare on Thursday to take an unassailable 2-0 lead in the three-match series.
The hosts, who won the first game by 25 runs, scored 247-6 before dismissing Bangladesh for 234.
Opener Ben Curran batted through the Zimbabwe innings for an unbeaten 111 after Zimbabwe had been put into bat, closing the innings with a 99-run unbeaten partnership with Brad Evans (58).
Tawhid Hridoy top-scored for the tourists with 60, but they were dismissed with 11 balls remaining as Zimbabwe captain Richard Ngarava took 3-55.
The final ODI will be on Saturday, followed by three Twenty20 internationals in Bulawayo.
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