Group A, Bulawayo: Australia 248-3 (47.3 overs) beat Zimbabwe 246-9 (50 overs) by seven wickets.
Australia maintained their 100% record in the 2003 World Cup with a comfortable seven-wicket win over Zimbabwe.
The world champions had been set 247 for victory and reached the target with 15 balls to spare following half-centuries from Damien Martyn, Darren Lehmann and Adam Gilchrist.
Lehmann sealed the four points - and Australia's 10th straight one-day win - with a boundary to square leg.
48th over: Lehmann clinches victory as he pulls the ball for four to the square leg boundary.
47th over: Lehmann sprints in for two runs and his half-century off 43 balls. Martyn's 50 follows two balls later.
46th over: Guy Whittall enters the bowling attack and concedes three runs in the process.
45th over: Lehmann outfoxes all the fielders with a big four across to the square leg boundary. Just 12 runs are required for victory off 30 balls.
44th over: Martyn and Lehmann both close in on their half-centuries as Blignaut finishes his spell.
43rd over: Lehmann punishes Hondo's slower balls and a tally of 11 for the over leaves Australia set for a comfortable victory.
42nd over: Lehmann is taking the leading role for Australia, hitting another four off Blignaut to keep the run rate up.
41st over: Australia's score passes 200 but Martyn is fortunate to escape as he chops the ball back past his stumps to the boundary.
40th over: Lehmann dispatches Streak to the boundary to leave Australia needing 51 runs from the final 10 overs.
39th over: Martyn and Lehmann rotate the strike as Marillier finishes his spell with 1-32.
38th over: Martyn finally hits his first boundary after 44 deliveries to keep Australia on course for victory.
37th over: Martyn misses the chance to put away a full toss but six runs come from the over.
36th over: Lehmann is nearly caught in the covers and hurts his neck in a collision with bowler Streak as he runs back for a second run.
35th over: Australia get away again as Murphy goes for nine runs.
34th over: The over yields just two runs as Lehmann joins Martyn at the crease.
33rd over: Ponting departs for 38 as he is caught and bowled by Murphy. Australia 156-3.
32nd over: Four runs come from the over as Ponting starts to try and force the issue.
31st over: Australia's run rate has dropped but they are still well ahead of schedule.
30th over: The crowd's early enthusiasm has dampened as Australia bring up the 150.
29th over: Another five runs leave Australia just 100 runs short of Zimbabwe's total with 126 balls remaining.
28th over: No fancy stuff from Australia as Ponting quietly moves on to 30 from 45 balls.
27th over: Ponting punishes some short bowling from Murphy as Australia take 10 off the over.
26th over: More steady scoring from Ponting and Martyn.
25th over: Some poor fielding allows Martyn to claim Australia's first boundary for 12 overs.
24th over: Just two runs from the over as Ponting and Martyn take a cautious approach.
23rd over: The boundaries have dried up for Australia as Zimbabwe sense a chance.
22nd over: Gilchrist survives a vocal lbw appeal from Marillier but promptly holes out to midwicket to a terrible delivery. Australia 113-2.
21st over: Leg-spinner Murphy goes for just three in his first over.
20th over: Gilchrist and Ponting keep rotating the strike with some easy singles.
19th over: Hondo restricts the scoring with just three runs being scored off the over.
18th over: Australia cruise past 100 with some quick running between the wickets.
17th over: Ebrahim makes a fine stop to prevent another Gilchrist boundary.
16th over: Marillier bowls a tight over as captain Ponting joins Gilchrist at the crease.
15th over: Hayden is out for 34 as he flicks a ball from Hondo off his leg stump and into the hands of Grant Flower. Australia 89-1.
14th over: Doug Marillier fails to grab a wicket off his first ball when he drops a sharp caught-and-bowled chance from Gilchrist.
13th over: Gilchrist hits Hondo straight down the ground for four before bringing up his half-century with a single.
12th over: A boundary for Gilchrist off Whittall gives Australia seven for the over.
11th over: Hayden is in full flow as he hits another four off Hondo.
10th over: Hayden smashes the ball over mid-off to the boundary and then drives straight down the ground to take his score to 20.
9th over: New bowler Hondo tries to make up for his dropped catch but has an appeal for caught behind off Gilchrist turned down.
8th over: Gilchrist hooks Blignaut for four to bring up the 50 off just 46 balls.
7th over: Gilchrist hammers Streak to the boundary and the Bulawayo crowd are disappointed when he then survives an lbw appeal.
6th over: Zimbabwe's first good over as Blignaut gives up just one run.
5th over: Streak restricts Australia to just four off the over but they are scoring at twice the rate Zimbabwe were at the start of their innings.
4th over: Hayden puts his first runs on the board as Australia take their rate up to eight runs per over.
3rd over: The scoreboard continues to tick over as Gilchrist takes his tally to 21. Hayden has faced just three balls and is yet to score.
2nd over: Gilchrist hammers two more fours but survives a scare as he is dropped by Hondo on the boundary.
1st over: Australia's innings begins well as they score six off the first over.
50th over: McGrath bowls Taibu for 23 with a yorker to pick up his first scalp. An almost identical ball then removes Murphy in the same way. Zimbabwe: 244-9
49th over: Lee offers another full-toss and is punished by Streak for four. McGrath then dives in the deep but cannot save another four. Streak caps a great over for Zimbabwe with a huge six.
48th over: McGrath is brought back into the attack, searching for his first wicket. Both batsmen swing the willow but cannot get the paceman away for more than singles.
47th over: Streak takes on Lehmann in the deep, scampering through for two runs. Taibu fends a Lee full-toss down to third man for two more.
46th over: After going for 25 runs in his last two overs, Gillespie shows greater discipline to restrict Zimbabwe to four runs.
45th over: Blignaut fires a full-toss back at Lee, who shows amazing reaction to snap up the chance. Zimbabwe: 208-7
44th over: Gillespie shows his displeasure as Taibu hits him for another boundary.
43rd over: Zimbabwe are suddenly on course for a respectable total as Blignaut clatters Hogg for six, a four and another six to pass his 50 in just 25 balls.
42nd over: Blignaut flays Gillespie all around the ground as the Aussie paceman gives up four boundaries in the over.
41st over: Blignaut's big hit off Hogg bounces just inside the boundary rope as Zimbabwe begin to go for their shots.
40th over: New batsman Blignaut dispatches Martyn to the boundary for four.
39th over: Hogg fails with his hat-trick ball at Taibu but just two runs come from the over.
38th over: Zimbabwe recover from the double blow to take five more runs off Martyn.
37th over: Hogg claims two wickets in two balls as Ebrahim is bowled trying an unorthodox sweep and Marillier top edges to Ponting. Zimbabwe 142-6.
36th over: Martyn gives up just two runs in a tidy over.
35th over: Taibu hits his first boundary as Zimbabwe start to accelerate the run rate again.
34th over: New bowler Martyn wastes a golden chance to run out Ebrahim, missing the stumps from just a metre away. Ebrahim rubs it in by hitting him for four.
33rd over: Hogg gives up just a single as the Zimbabwe run rate slips back below four an over.
32nd over: New batsmen Ebrahim and Taibu begin tentatively as Symonds finishes his spell with a maiden.
31st over: Australia grab the vital wicket of Andy Flower as spinner Hogg deceives him with the flipper to bowl him out for 62. Zimbabwe 121-4.
30th over: Andy Flower sets about repairing the damage after his brother's dismissal.
29th over: Australia claim the breakthrough as Grant Flower is slow to come back for two and a brilliant throw from Gilchrist runs him out for 37. Zimbabwe 113-3.
28th over: Grant Flower cuts to the boundary as seven more runs take the run rate past four an over.
27th over: The Flowers bring up the 100 with an 11-run over - Zimbabwe's best so far.
26th over: Andy Flower plays a late cut to bring up his half century in 77 balls and brother Grant smashes Symonds over mid-off for four.
25th over: Grant Flower top edges Brett Lee for four as Zimbabwe reach the halfway point of their innings on 87-2.
24th over: Grant Flower plays a couple of positive strokes to take four from the over.
23rd over: Andy Flower plays and misses outside off-stump but a single off Lee brings up the 50 partnership off 94 balls.
22nd over: Symonds keeps up the pressure with a tight over.
21st over: Andy Flower escapes as he glances a delivery from Lee just wide of keeper Gilchrist for four.
20th over: Martin makes a fine stop to stop Grant Flower's cut from reaching the boundary.
19th over: A better over for Zimbabwe as Lee goes for five.
18th over: Andy Flower takes his score on to 35 with a cut which eludes Lehmann and Lee to reach the boundary rope.
17th over: The run rate is creeping down towards three an over as Australia continue to keep the Flower brothers under control.
16th over: A single from Grant Flower is all Zimbabwe get from Symonds' second over.
15th over: Andy Flower welcomes new bowler Lee by dispatching him to the boundary for four.
14th over: Symonds almost strikes in his first over as Hogg puts down a low chance from Grant Flower in the covers. Andy Flower rubs it in by smashing another boundary.
13th over: The Flowers are unable to increase the run rate as McGrath pegs them back with another maiden.
12th over: Gillespie's rhythm is disrupted by problems with the sight screens.
11th over: McGrath keeps up the pressure on the home batsmen with his first maiden.
10th over: Andy Flower looks in superb touch as he plunders two more boundaries off Gillespie.
9th over: Grant Flower sets about repairing the damage with brother Andy but just two runs come from the over.
8th over: Wishart throws away his wicket as he takes a swing at a Gillespie delivery and edges the ball on to his stumps. Zimbabwe 28-2.
7th over: McGrath keeps the batsmen quiet with a tidy over.
6th over: Andy Flower signals his arrival with two crashing fours off Gillespie's first two balls.
5th over: A better over from McGrath as Wishart has to settle for just two runs.
4th over: Gillespie strikes as Whittall miscues a pull shot and Hogg makes a simple catch. Zimbabwe 13-1.
3rd over: Wishart has to scramble to make his ground as he takes on Lehmann's arm before ending the over with a four.
2nd over: Gillespie has a confident lbw appeal turned down as he opens with a maiden.
1st over: McGrath's first over goes for five as keeper Gilchrist lets a simple take go through his hands for four.
Australia: Ricky Ponting (captain), Adam Gilchrist, Matthew Hayden, Damien Martyn, Darren Lehmann, Michael Bevan, Andrew Symonds, Brad Hogg, Brett Lee, Jason Gillespie, Glenn McGrath.
Zimbabwe: Craig Wishart, Guy Whittall, Andy Flower, Grant Flower, Dion Ebrahim, Tatenda Taibu, Heath Streak (captain), Brian Murphy, Douglas Hondo, Doug Marillier, Andy Blignaut.
Umpires: David Orchard (South Africa) and Billy Bowden (New Zealand).