Cameron White's century powered the Australians to a five-wicket triumph over Middlesex at Lord's in their final warm-up fixture before the NatWest Series.
White slammed 106 from 120 balls after the tourists had slumped to 64-4 in pursuit of 274 for victory.
The Victorian right-hander put on 176 for the fifth wicket with Michael Hussey the upper order had subsided.
Tim Murtagh ran out Tim Paine (10) by tipping the ball onto the stumps at the non-striker's end.
The seam bowler then trapped both Australia's captain Ricky Ponting (17) and his deputy and Michael Clarke (0) lbw to leave the visitors in big trouble in the 11th over.
Paine's opening partner Shane Watson (24) had also been run out by David Warner's direct hit during a calamitous start to the run chase.
But White and Hussey averted a shock result with a superb partnership spanning 33 overs, the former bringing up an imperious hundred from 114 balls with a flat six into the Grandstand off spinner Tom Smith (0-57).
Murtagh (3-43) returned to have White caught by Scott Newman with 34 still required but Hussey (72no) and Steven Smith (28no) completed the win with 13 balls to spare.
Middlesex, fielding an all-Australian opening pair of Warner and Adam Gilchrist, had opted to bat first after winning the toss.
Warner (5) edged behind off Doug Bollinger (3-24) in the first over before Gilchrist and Owais Shah shared 67 for the second wicket.
Gilchrist fell to Shane Watson's medium pace on 38 but Shah, with good support from Neil Dexter (45) and later Newman, ensured the county side made a competitive score.
The former England batsman stroked 92 off 123 balls, including eight fours and a six.
He perished to Clint McKay (1-60) in pursuit of quick runs in the final overs but Newman, who hammered an unbeaten 55 from just 40 deliveries, saw Middlesex up to a final total of 273-5.
The five-match NatWest Series between England and Australia starts at the Rose Bowl on Tuesday.