Stephan Shemilt
BBC Sport in Melbourne

In the previous over, Cook went to silly point without a helmet and was told by umpire Ravi he had to have some protection. When the helmet came out, so too did a box. Cook owes Ravi a drink.

Loser92: That could be just the birthday present Joe Root was looking for.

Kevin Horton: Happy birthday skipper. Get Smith out while you're at it, come on England.

Image source, Getty Images

Aus 172-3published at 72 overs

72 overs

Joe Root sends down a full toss that Shaun Marsh drives away - it batters into the turf and straight into a...sensitive area of Alastair Cook at silly point.

"Cheers for that, Joe." The former captain shares a joke with his predecessor.

Better from the rest of the over from Root - a maiden.

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Unfortunately for Anderson, he has to bowl at Smith first up. The Aussie skipper has no time for that recent flurry of excitement, calmly getting in behind and defending the over.

A maiden for Anderson's figures though.

New batsman in so here comes James Anderson...

Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special

I loved the lion's roar from Joe Root there.

Root unleashed a guttural yell when Vince snaffled that. Relief after a chastening start to the day. Can England capitalise now?

Here comes Shaun Marsh. England are putting Alastair Cook under the lid and right under the number five's nose.

The Barmy Army in full voice as Root wheels through the rest of his over, but Marsh calmly defends.

Image source, PA

Glenn McGrath
Ex-Australia pace bowler on BBC Test Match Special

There it is. I am not sure what David Warner was doing. All morning, all yesterday he was watchful and he has just hit this one straight up in the air.

He will be disappointed with himself. England are still in this game.

Image source, Getty Images

Glenn McGrath
Ex-Australia pace bowler on BBC Test Match Special

England can't think the game is gone. All they need is one wicket. Break this partnership - this is the crucial one.

You never know.

You're getting you're wish - birthday boy Joe Root is bringing himself on to bowl.

I hear wickets make nice presents...

Andy Whittles: The difference between the two sides is clear. If this morning had started the other way round the Aussies would have stuck the knife in.

D Rudden: Why doesn’t Root back himself to have a bowl? He always had a knack of drawing a wicket out of nowhere.

Malan has decent accuracy for a part-time bowler, but still serves up a bit of dross.

Warner misses out though - battering a cut shot away but finding Curran making a diving stop and has to settle for one.

Keiran Boyle

Woakes serves up a half-volley that Smith clatters between the fielders in the covers for four.

Better next up, getting it through Smith's defences and onto the pads. A strangled appeal but no interest from the umpire.

Warner works Woakes away for one and Australia have the lead.

That's fittingly also the century partnership for Warner and Smith.

Are they trying to kick on now?

Alison Mitchell
BBC Test Match Special

Smith played that shot like he was hacking down a tree with an axe.

Warner picks up a single to bring his captain back on strike.

Smith then unleashes some kind of tomahawk chop/sweep on a ball down leg from Malan, smashing it away fine to the fence.

That brings the scores level. So no innings victory for England then.

It's quite sunny now in Melbourne after that patch of rain.

The players are back out on the field. Here we go...