An inswinging onslaught from Sri Lanka´s bowlers led to the demolition of the home side in 26.4 overs, their lowest ODI score for 27 years.[break]
At one stage Australia were 40-9 before putting on 34 for the last wicket. Nuwan Kulasekara took five for 22 and Lasith Malinga picked up 3-14.
In their reply Sri Lanka also struggled against hostile bowling but reached their target with an astonishing 30 overs remaining.
Australia´s Mitchell Johnson found plenty of movement, taking 3-11 in three overs.
The next match is at the Sydney Cricket Ground on Sunday and the final game is in Hobart on Wednesday.
Match scores: Australia 74 all out (26.4 overs); Sri Lanka 75 for six (20 overs).
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