Earlier, Farhad Reza’s late blitz after Usman Khan’s 45 off 31 balls and Afif Hossain’s 35 off 31 balls helped Chattogram post 157-9 after they were asked to bat first.

Usman and Afif shared a 70-run stand for the second wicket off 43 balls but after their dismissals, the Chattogram innings lost momentum.

Farhad, who was one of the three changes made by Chattogram, then struck a nine-ball 21 with a couple of fours and a six to push the total over 150.

Pacer Wahab Riaz was Khulna’s most successful bowler, finishing with 4-36 which included two wickets in consecutive deliveries in the final over.

Dutch pacer Paul van Meekeren remained wicketless, but conceded only 24 runs off four overs.

Chasing a modest total, Khulna lost opener Munim Shahriar for a duck in the second ball of the innings.

After the early wicket, Tamim and Joy formed a104-run partnership off 76 balls to put their chase back on track.

Nihaduzzaman then struck in consecutive overs to remove Tamim and Joy to raise hopes of a Chattogram comeback.

But Yasir then played a captain’s knock, smashing four sixes and two fours to catapult Khulna over the finishing line with four balls to spare.

Pakistan’s Azam Khan remained unbeaten on 15 off 16 balls at the other end.

This is Khulna’s second straight win after starting their tournament with three consecutive losses.

Khulna have now jumped to fourth position with four points while losers Chattogram slipped to the sixth place.