Damien Martyn scored his 23rd one-day half century while Andrew Symonds smashed his way to his 11th as Australia beat New Zealand by seven wickets in their Champions Trophy Pool A game at The Oval on Thursday.
Martyn scored 60 not out, while Symonds cracked 71 off 47 balls as Australia reached 199 for three in 37.2 overs in response to New Zealand's 198 for nine.
Glenn McGrath and Michael Kasprowicz took three wickets each in New Zealand's innings. McGrath knocked off the top of the order before finishing with three for 39, while Kasprowicz tore through the middle and ended with three for 32.
Australia will now meet the winner of Friday's game between England and Sri Lanka in the first semi-final at Edgbaston on September 21.
New Zealand looked threatening early on when Adam Gilchrist was bowled for four by Jacob Oram in the first over and Kyle Mills had three leg before appeals turned down against Matthew Hayden the next over.
Australia captain Ricky Ponting went cheaply, bowled for 14 by Scott Styris but Hayden and Martyn just continued to methodically tick off the runs.
After Hayden was dismissed for 47 trying to smash medium-slow bowler Chris Harris down the ground only to be caught at mid-off by Chris Cairns, Symonds and Martyn continued to work the slower bowlers around and dispatch the occasional ball to, and in Symonds case over, the boundary.
It was Australia's seventh successive victory against New Zealand in one-day internationals and the fifth time in the last six they had restricted them to under 200 runs.
Only some lower-order resistance from wicketkeeper Brendon McCullum and Daniel Vettori spared New Zealand the embarrassment of a lower score after they had slumped to 89 for seven.
McCullum top-scored with 47 and combined with Harris (26) in a 35-run partnership for the eighth wicket before he and Vettori (29 not out) added 68 runs for the ninth wicket.

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Scoreboard New Zealand
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S.Fleming c Gillespie b Kasprowicz    29
N.Astle lbw b McGrath                 18
H.Marshall lbw b McGrath               0
S.Styris c Clarke b McGrath            0
C.McMillan run out                    18
J.Oram c & b Kasprowicz               15
C.Cairns lbw b Kasprowicz              0
C.Harris c & b Lehmann                26
B.McCullum c
Kasprowicz b Gillespie                47
D.Vettori not out                     29
K.Mills not out                        3
Extras: (lb-4 w-7 nb-2)               13
Total: (for nine wickets, 50 overs)  198
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Fall of wickets: 1-30 2-36 3-49 4-49 5-79 6-79 7-89 8-124 9-192
Bowling: McGrath 10-0-39-3 (w-2), Gillespie 9-1-46-1 (w-4), Kasprowicz 10-1-32-3, Watson 6-0-32-0 (nb-2), Symonds 10-2-29-0 (w-1), Lehmann 5-0-16-1

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Australia
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A.Gilchrist b Oram                       4
M.Hayden c Cairns b Harris              47
R.Pontingb Styris                       14
D.Martyn not out                        60
A.Symonds not out                       71
Extras (lb-1 w-1 nb-1)                   3
Total (for three wickets, 37.2 overs)  199
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Fall of wickets: 1-4 2-49 3-99
Did not bat: D.Lehmann, M.Clarke, S.Watson, M.Kasprowicz, J.Gillespie, G.McGrath.
Bowling: Oram 9-2-34-1 (nb-1), Mills 5.2-0-34-0, Vettori 10-0-52-0 (w-1), Styris 2-0-9-1, Cairns 3-0-17-0, Harris 7-1-36-1, McMillan 1-0-16-0
Result: Australia won by seven wickets.