Dasun Shanaka will be optimistic of a fine performance by his bowlers, who have showcased the ability to make their presence felt against Bangladesh.
Mahmudullah has said that it wasn't right for Bangladesh's "commitment" to be questioned, after earning a ticket to the T20 World Cup Super 12s.
Bangladesh bowl out New Zealand for 60 -- their joint lowest total in T20s -- to take 1-0 lead in the five T20 match series.
Bangladesh created history when they won the third T20I by 11 runs, taking an unassailable lead and sealing their first-ever series win over Australia.
The pick of the bowlers was spinner Nasum Ahmed who took four wickets and conceded only 19 runs in his four overs.