Mitchell Starc ripped through the Bangladesh tail-end as they were skittled for 182, despite an anchoring 114-ball 95 from Tamim Iqbal at the Oval.
It started as a gloomy day in London with predictions of showers threatening to interrupt play, but those worries soon cleared up as the sun began to creep through the slowly dispersing cloud cover.
Bangladesh won the toss, and as predicted, put Australia in to bowl.
With targets of 300 set in the two matches at the Oval so far this tournament, it was a decision which both skippers agreed they would do. For Bangladesh, however, their innings did not go to plan.
The Tigers were obliterated by a clinical bowling performance by the Aussies, who swept out the opposition who only scored 87 runs as a collective batting unit, despite Iqbal fighting hard to keep his side in the game.
The 28-year-old reached his fifty in 69 balls but could not reach three figures, falling just five runs short of recording his tenth career ton and a sixth century since the 2015 World Cup.
Australia’s decision to play Adam Zampa, on an ageing pitch, paid off as he picked up two wickets which included the scalp of the Bangladesh skipper, Mashrafe Mortaza.
It was Mitchell Starc who was mercurial with the ball in hand, the 27-year-old speedster ended with figures of 4-29, which included the wicket of Iqbal in the 43rd over.
This was the moment which killed the game, as Starc went on to pick up three more scalps and Bangladesh were bundled out for 189 with 33 balls remaining.
Weather concerns soon returned as the rain predictions came true with the fall of the last wicket, with the covers coming on in the innings break.
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