Spencer Johnson's record spell leads Australia to T20I series sweep over Bangladesh

Spencer Johnson has produced the most economical four-over spell by an Australian in men's T20I history to guide his country to a ruthless seven-wicket win over Bangladesh.

Johnson finished with the stunning figures of 2-6 from four overs as Australia restricted Bangladesh to a paltry 8-109 from its 20 overs in the third and final match at Chattogram on Sunday.

The tourists cruised to victory with 54 deliveries to spare, finishing on 3-112 to wrap up a 3-0 series clean sweep.

Captain Mitch Marsh helped make light work of the modest target, bludgeoning 60 off 28 balls to be named player of the match.

"The way we adapted to the conditions each and every game … I thought we were fantastic with the ball today," Marsh said after the match.

Experienced duo Nathan Ellis (2-21) and Adam Zampa (2-22) provided valuable support for Johnson, who bounced back superbly after conceding 39 from two overs in the second match of the series on Friday.

Acting captain Towhid Hridoy (61 not out) waged a solo vigil for the hosts, with Rishad Hossain (16) the only other Bangladeshi batter to pass seven runs.

Australia was untroubled in its reply.

Josh Inglis (17) holed out before opening partner Marsh did likewise, soon after raising his 14th T20I half-century.

Cooper Connolly (15) miscued leg-spinner Rishad to Saif Hassan, before Tim David (12 not out) entered with eight runs required and calmly clubbed two sixes.

It was a resounding fightback by Australia in the 20-over format after it lost the ODI series 2-1.