Well now, this is an interesting change - MS Dhoni has called Virat Kohli into the attack to deliver some part-time medium pace. Kohli really got under the Australians' skin during the recent Test series, but he can't trouble them with his dibbly-dobbly seam offerings - Smith seizes on a short delivery and pulls it through midwicket.

Allan Border
Ex-Australia captain on BBC Test Match Special

"India have bowled every team out so far - it's been a watchful start by Australia, but if they keep wickets in hand, we've seen how many runs can be scored in the last few overs."

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Austin Scaria: Steve Smith and Glenn Maxwell... the danger men for India. Both love Indian bowling. Watch out for them.

Mike Johns: Incredible that in Sydney, Australia still don't seem to have the home crowd advantage!

MS Dhoni makes his first tactical move, introducing the medium-pace variety of Mohit Sharma. Mohit won't offer the batsmen as much pace to work with, and Smith is just taking a little while to get used to the slowness, having to wait for the ball to come on to the bat. Just a single from a good first over by Mohit.

Australia 56-1 (10 overs)

Batsmen: Finch 11*, Smith 30*

Fall of wicket: 15-1 (Warner 12)

Bowling figures: Shami 5-0-16-0, Yadav 5-0-39-1.

Australia won toss

Scorecard

Vikas Pandey
BBC Monitoring

"10 overs have gone and players seem calm and there are no signs of sledging. One Indian TV host just said that the 'usual intensity and sledging' between the two teams is missing. Is it the calm before the storm?"

Jonathan Agnew
BBC Test Match Special

"Suddenly, Australia have broken free of the shackles with those four fours, but it's been four poor deliveries from Yadav. I'm not sure what he's doing."

Finally Steve Smith releases the pressure valve, but his heart would have been in his mouth as the ball flies uppishly off the bat but eludes the fielder at point. But the number 3 follows that with a much more authoritative stroke, fetching a short ball from outside off and pulling it with a controlled stroke through midwicket.

Now it looks like Smith has broken his bat, he's calling for a new blade here. But the change of club makes no difference to him, swatting a poor short ball from Yadav through square leg. And another one! Carbon copy, not enough bounce on the short ball from Yadav and Smith smashes it to the rope. Four boundaries in the over, suddenly that doesn't look like such a good powerplay for India.

Image source, Reuters

Vic Marks
Ex-England spinner on BBC Test Match Special

"The only parallel with this would be a British and Irish Lions fixture against Australia in Sydney, with a sea of red shirts. I think the Aussies get a little bemused when there's as many Lions supporters as Australians. What India do have is variety in mid-innings with the spinners. We've not seen a lot of successful spin at this tournament, but India will probably bowl 20 overs of spin."

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Amrut Atre: Is it Sydney or Mumbai? Looks more like Mumbai to me.

Parm Bilkhu: It sounds like India are the home team. Great support.

These sides have seen a lot of each other over the last few months and there's a first sign of a bit of niggle as Smith pushes one back at Shami and the bowler hurls the ball aggressively at the stumps, forcing the batsman to take evasive action. Shami is offering very little loose stuff for the batsmen to capitalise on, while mixing up his line and length to good effect, and the boundaries have temporarily dried up for Australia.

Alison Mitchell
BBC Test Match Special

On Twitter:, external "Contender for biggest banner of the tournament?"

Allan Border
Ex-Australia captain on BBC Test Match Special

"This hasn't been crash-bang-wallop. Australia have had to be watchful, and if you're a good bowler, you can still get something out of this track. There's no rain forecast, so Duckworth and Lewis can have the day off."

An audible 'Aw!' from Aaron Finch as a short ball from Yadav skids on lower than expected and he has to adjust his pull shot at the last minute. The India seamers are keeping this pair tied down at the moment, just four singles from another tight over.

Image source, Getty Images

Jonathan Agnew
BBC Test Match Special

"What's struck me about India has been the transformation since the tri-series, when they appeared to be having a bit of a break. The fielding has been excellent, they've barely dropped a catch."

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Andrew Samson
BBC Test Match Special statistician

"Australia have scored 180 runs at 25.71 for the first wicket in this World Cup.

"They have had only one World Cup where the first-wicket partnership averaged less than this: 149 at 24.83 in 1973."

Steve Smith squints with intense concentration - India are asking him different questions with every ball here, determined not to let him settle. He's in sublime touch but the number three does tend to shuffle a long way across his stumps, and he picks up a single by crabbily working Shami down to long leg. Another good over from India, who have just shaded this opening exchange.

Vikas Pandey
BBC Monitoring

"It seems in India only cricket is being discussed across the country. All TV channels are running special shows and live commentary and #IndvsAus is the top hashtag on Twitter. Indian fans seem very confident about their team's victory."

Niral: If India can bowl well and restrict them to 300 and under, I feel we have a really good chance with the out-of-nowhere run of form we have put together in this World Cup.

Rana W U Rehman: Australia must score 350+ and then India must show why they deserve to win. Hoping for a cracker of a match.

Craig Murray: I'm at the SCG and have never experienced such a partisan cricket crowd. Odd thing is. It's all India!