Tim Southee absolutely destroyed England in the pool stages but has slightly lost his mojo since then. David Warner is in no mood to let him rediscover it - he smashes his first ball through the covers for four and then collects another boundary with a mistimed pull down the ground.

And then a big miss for New Zealand! Warner pushes hard at a full delivery and gets a healthy edge, but it flashes just wide of Ross Taylor at first slip and runs away for another four. Daniel Vettori had been standing at second slip the ball before, but Brendon McCullum moved him to short cover and left that position vacant. On such decisions are World Cup finals won and lost...

Image source, Reuters

Michael Vaughan
Ex-England captain on BBC Test Match Special

"With a low score, there's always a thought that you go hard early on. But the only way New Zealand can win is if they take wickets, and Australia should be a bit more cautious. But we're dealing with some big egos here."

David Warner has started fluently here and he picks up his first boundary, leaning into a swinging Boult delivery and punching it through the covers. Boult, bowling to four slips, won't be entirely disheartened to be enticing that sort of shot. More runs for Australia though when Warner flicks fine for three. He has 15 in the blink of an eye - New Zealand need him outta here, and pronto.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"It's almost as if everyone is panicking out there. New Zealand are desperate for wickets and striving for the perfect delivery and David Warner is trying to smash everything to the boundary."

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Tim Southee just gets slightly too wide in pursuit of swing and David Warner slaps him a slightly mistimed shot through the off side, which is well pursued by Kane Williamson to keep it to two. New Zealand will need to hunt like tigers in the field if they are to defend this.

Warner then clips off his toes and the ball is fielded very gingerly by Daniel Vettori at fine leg. The spinner looks in real discomfort - perhaps an Achilles injury? That could be a huge blow for New Zealand.

Andrew Samson
BBC Test Match Special statistician

"Trent Boult now has 13 wickets bowling in the first 10 overs in this tournament. The next best is nine by Jerome Taylor."

Image source, Getty Images

Steve Smith is the new man - coming off the back of four consecutive fifties. He survives the final two deliveries of the over.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"There's about 40,000 Kiwis jumping around in the MCG now. It's the perfect start, it's the swing through the air which did for Finch. If Boult keeps on swinging the ball like that, the technique has to be spot on."

That's what they needed! Trent Boult has been the destroyer-in-chief for New Zealand in this tournament and he does both halves of the job. Full and swinging, Aaron Finch mistimes it onto his pads and the ball loops up for a simple return catch. Brendon McCullum bursts a few capillaries in delight.

Scorecard

Image source, Getty Images

Michael Vaughan
Ex-England captain on BBC Test Match Special

"Aaron Finch is a positive player but he is a slow starter, he struggles to get his feet moving early on."

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Andrew White: Hilarious seeing all the "Bad Sport" tweets re the Aussies.... Poms really are having a dour day.

Ben Vaughan: Neil Fairbrother never gets enough credit for how good a one day player he was, he would be immense if he was playing now.

David Warner gets off the mark with a clip off his legs. Tim Southee gets the ball zipping through, but there's not too much swing in evidence - maybe just a hint of away-movement as he whistles one past Aaron Finch's outside edge. Good start from Southee.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"There's been a bit of heat out there. Grant Elliott copped a bit when he was batting and as soon as Aaron Finch walked to the middle, he started getting some words and the umpire had to step in. You don't want to see that in a World Cup final."

Tim Southee has the new ball. Aaron Finch and David Warner are in the middle. Here we go...

Thanks Mitch. The equation is simple for New Zealand: they need early wickets and plenty of them. If Australia bat for 30 overs, they win. It should be a formality - but this is the World Cup final. If wickets do start to tumble, the nerves will jangle in that Australia dressing room.

Image source, Getty Images

And with Australia about to begin their run chase, it's over to James Gheerbrant to talk you through the next phase.

BBC Radio Test Match Special

ICC chief executive David Richardson on TMS: "We're still going to have 48-49 matches. The bottom line is the more matches you have, the more money you make, and this funds all of world cricket - especially below the Full Member level. We're putting money into these teams hoping we'll genuinely have 14 rather than eight teams capable of competing."

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BBC Radio Test Match Special

ICC chief executive David Richardson: "Cricket is more than just the end result. The danger is that we don't do anything for the lower end and push them into the World Cup and hope they do well.

"Our fear was that they wouldn't do too well, that UAE might be annihilated, but we sent them on camps beforehand to ensure they performed credibly and to the best of their ability. They did that, which is a credit to our development teams.

"It's more about giving opportunities to everyone and giving more money to the likes of Ireland and Afghanistan so they can compete against full members."

BBC Radio Test Match Special

ICC chief executive David Richardson on a 10-team World Cup in 2019: "The matter will be discussed again at future ICC meetings. As it stands we've entered into an agreement with broadcasters for a 10-team World Cup.

"I want it to be a shop window for the best teams in one-day cricket - whether that be eight teams, 10 teams or 12 teams.

"We have to make sure we don't put Associate members into tournaments just for window dressing. We have to make sure Ireland and Afghanistan get more resources and play more Full members on a more regular basis. The debate will still be had as to whether we have 10 or increase it."

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BBC Radio Test Match Special

ICC chief executive David Richardson: "This tournament has been well run, they have left no stone unturned. Both Australia and New Zealand have presented the venues perfectly. There have been good crowds, and that hasn't happened by accident. They have involved local communities and priced the tickets right and we've broken all records for attendances."