We've still got 90 minutes of play in the day...

Vic Marks
Ex-England spinner on BBC Test Match Special

It's almost as if Steve Smith is sitting back and saying, 'I'm quite enjoying watching this'.

Jim Maxwell
BBC Test Match Special

He has put on a magnificent display of batting today.

150 for Marshpublished at 133 overs

133 overs

Lead by 90

Chris Woakes bowls, short, Mitch Marsh fends it off and that's his 150! He hadn't scored a ton before today, now another landmark.

To be honest he'll probably be annoyed if he doesn't get 200. His brother must be fuming - the only man out all day to a nothing shot to a nothing ball...

Peter Collins: At the current rate of wicket taking throughout the series, England take a wicket every 16.19 overs.

It would take us 323 overs to take 20 wickets. If we disregard the second innings at Adelaide, that rises to 418.18 overs. You can't win a game like that.

Who predicted Mitch Marsh being 138* off 180 balls and that not being the story of the day?

Marsh picks up another three off Moeen Ali, who is now 1-83. Credit to Craig Overton who put in a fine effort to claw it back.

No - in a moment which rather sums up the day, they give a four after a review.

Is this a chance?! The first false shot in about eight hours as Mitch Marsh top edges a pull off Chris Woakes, but it drops well short of Craig Overton in the deep.

That's as exciting as it's got for England for a long, long time. That Brian Lara record of 400 is just ludicrous really isn't it - Steve Smith stared batting at 06:40 GMT on Friday morning and he's only halfway to that milestone!

Jim Maxwell
BBC Test Match Special

It's just like watching someone have a net.

Tim Paine has been padded up for 55 overs. Poor bloke.

Moeen Ali gets through another over - there are 22 overs left of the day's play. My goodness me.

In comes Chris Woakes, trundling in and carted away for four by Mitch Marsh, who is having the sort of knock which regenerates a career.

Nathan Lyon spoke before the tour of ending a few careers, he may be spot on. There are some tired legs and minds in this England team.

Vic Marks
Ex-England spinner on BBC Test Match Special

Woakes will bowl at any time, any place and anywhere. But it's not ideal at the moment.

Mithun: What a sensational knock by Steve Smith, made the bowling attack look very mediocre. Has to be best Test player currently.

Daniel Oxley: Steve Smith is batting in an age of no real world class bowlers, so I wouldn't class him as one of the greats at all.

Joe Root screams some encouragement to Moeen Ali. I know Graeme Swann has been criticising the lack of positivity in the England field today but it's a good job I'm not out there.

England have taken one wicket all day and had maybe three or four deliveries which have concerned Steve Smith all day.

Time is the only barrier to the Aussie scorecard. They could get as many runs as they want.

Graeme Swann
Ex-England spinner on BBC Radio 5 live

The England bowlers haven't been that bad. Australia at the same point had England 380-4, they looked innocuous as well. Bairstow and Malan were batting beautifully, making it look easy. But Australia knew that they were one or two wickets away from rolling England over because of a weak tail. You could see it in their body language.

We are all surprised by the collapse of England but the Australian players and crowd weren't.

The Australian TV channels have been showing highlights of Brian Lara's record individual score of 400 all afternoon in readiness for Steve Smith maybe taking it on.

How's that for confidence? Mitch Marsh is set for 200 first. He clobbers Joe Root to the fence, merciless stuff.