Vince 83 - brilliantly run out by Lyon
Stoneman 53 - bowled by Cummins
Root 15 - lbw on review to Cummins
England slip from 127-1 to 163-4
Play to start at 23:30 GMT on Thursday
Stoneman 20, Vince 27
Mitch the mo returns to the attack, Stoneman equal to the task, defending and leaving well.
The fifth drifts down leg and Paine scramble across to cover before Stoneman bats back the last.
A maiden for Starc but still a few yards of pace for him to put on.
"Marais, there must be something wrong with the ball - I know our bowlers are quicker than this."
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Lyon now at Vince, who covers the first four deliveries nicely.
The fifth turns a bit sharper and Vince rocks it round the corner for a single. The Hampshire batsman is looking in regal form out there.
Stoneman nudges the last out to wide long-on for another single.
Image source, Getty ImagesText 81111
As I sip my 3rd G&T of the night, sitting on my warm sofa, I recall vividly listening to the first session of the 1986 series from my cold horsehair mattress at boarding school. Chris Broad caught behind early on, but England's unfancied side prospered. I am just as excited 31 years on!
Tom Russell
Glenn McGrath
Ex-Australia pace bowler on BBC Test Match Special
England have fought back nicely after losing Cook. Stoneman and Vince have had a reasonable tour to date. These were the two that I wanted to see how they'd go. Joe Root will want time to go further and further, and let the pitch settle a little bit more, before he goes out there.
Image source, ReutersHazlewood 8-3-24-0
Hazlewood directs a short ball at Stoneman that beats the Surrey man's defences and cracks his upper arm. It was more the lack of pace than pace that deceived Stoneman there.
Stoneman clips off his pads for a comfortable couple, accumulating nicely.
Andrew Samson
BBC Test Match Special statistician
Image source, Getty ImagesNathan Lyon has taken 46 Test wickets at 21.09 in 2017 - the second most of any Australian spinner in a calendar year.
Stoneman 17, Vince 26
Here is the 'career-ending' off-spinner - that's a decent ball first up, finding the thick outside edge of Stoneman's bat, but it runs away harmlessly enough in the end.
Stoneman plays the next four well enough before dropping the last one away through third man for a quick single.
Lyon has a chirp at the end of the over. Stoneman turns away laughing.
Hazlewood continues - it's all nice line and length stuff but nothing to trouble Vince, who calmly dismisses the over.
Time for Nathan Lyon?
#bbccricket
Ahnaf Tahmed Faiz: James Vince looks so, so good on the eye when he's in the groove.
Daniel Davies: I've already gone past my 1am limit. Might as well stay up for the rest of it now.
Text 81111
I tuned in specifically for 90mph bowlers. The Aussies are all talk.
Fred Parker, London
Image source, PAStoneman 16, Vince 26
A sedate end to the over after that brief flurry of excitement from the Aussie slip cordon.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
It must have flicked the pad buckle. They all went up but they will be careful with reviews. The refunding of reviews at 80 overs has been removed now.
Cummins goes short at Vince who gets on top and rolls his wrists on the pull shot for a single before Stoneman dabs away for one.
Vince sees another opportunity for the drive, judges it well enough to crash it for three.
Cummins then slides one down leg and Stoneman wafts at it - Paine catches and the Aussies go up but nothing doing from the umpire.
Glenn McGrath
BBC Test Match Special
Stoneman and Vince seem pretty composed, not nervous and they've been the pick of the batsmen on tour so far.
Image source, ReutersStoneman 15, Vince 22
Watchful from Stoneman to Hazlewood - leaves one, pats a couple back, leaves another.
'Rocky' then sways away from a short but not particularly threatening delivery before leaving the last well alone.
A maiden without menace.
Dan Norcross
BBC Test Match Special
I tend to think of Mitchell Starc as a bowler of great balls rather than a great bowler.
And yet he was starting to get a nice pitch map today - if he keeps consistent and then chucks in the great balls, he really will be a great bowler and that will cause alarm for England.
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James Whitaker: When are the Aussies going to put one of their pace bowlers on?
Dev Martin: Hazlewood just got the perfect response from Vince. Lovely!
Eng 39-1
Image source, Getty ImagesAnd with that, the first drinks break of the 2017-18 Ashes. File that first hour under intriguing.
Well done if you've stayed up this far - I appreciate you may be flagging, but stay with us!