S Marsh 98*, M Marsh 63*
Khawaja 171 - Crane's first Test wicket
England take two wickets in day
M Marsh overturns lbw on 55
Khawaja adds 188 with Smith (83)
Day five starts at 23:30 GMT
Australia lead five-match series 3-0
Trail by 139
Usman Khawaja comes down the pitch to Moeen and looks to knock Moeen back down the ground, but he can't time the shot properly and the inside edge balloons just short of the waiting fielder. Joe Root, standing at slip, mimes the shot to Moeen as he walks back to his mark.
Khawaja, perhaps wisely, stays a bit more circumspect for the rest of the over, and plays out a maiden.
#bbccricket
Philip Carr: Steve Smith moving across and defending a ball about 5 miles outside off stump is simply ridiculous but also weirdly majestic.
Smith 56, Khawaja 93
Usman Khawaja keeps up his steady accumulation with a little tickle off his legs. Steve Smith continues his wandering across his stumps, hoicking his bat high above his head before nabbing a single from the final ball of James Anderson's over.
Stephan Shemilt
BBC Sport in Sydney
Australian Prime Minister Malcolm Turnbull taking a selfie. Honest.
Image source, BBC SportSmith 54, Khawaja 92
Shot! That's too full from Moeen and Steve Smith lets his arms fly, stretching forward and cracking him through the covers. Mason Crane scampers after the ball like an excitable puppy, but can only slide it, and himself, into the boundary rope.
Simon Mann
BBC Test Match Special commentator
This run machine just keeps going.
Death, taxes, a Steve Smith half-century. All inevitable.
Smith raises his bat to the SCG crowd as he works Moeen off his legs to bring up his half-century. It's his fifth of the series, and he's made four of them into centuries.
Image source, Getty Images
Andrew Samson
BBC Test Match Special statistician
Steve Smith is now on 651 runs for the series - the seventh-highest for an Australian batsman in the Ashes.
Four of the six above him are Donald Bradman.
Ooh. It'll be Moeen to bowl the second over of the day. He said earlier that he though he was bowling as well in this Test as he has all tour.
Trail by 150
Steve Smith is stepping so far across that he's showing all three stumps to James Anderson, who is coming around the wicket to him. It's not pretty but man, is it effective.
Runs! Smith milks a couple off his hip before tapping a simple single away. Usman Khawaja, nine runs away from his sixth Test century, lets the rest of the over fly past him.
Short, wide, pushed across the batsman, and Steve Smith leaves it well alone.
Let's play!
Right, here we go. England make their way on to the field, followed by Usman Khawaja and Steve Smith. Khawaja isn't looking quite as chill as he normally does.
By the looks of things, it'll be James Anderson to open the bowling today.
Image source, Getty ImagesNever let it be said that our commentators aren't fashionable. A sterling effort for pink day, particularly from fashion expert Dan Norcross.
Stephan Shemilt
BBC Sport in Sydney
It feels like not only the SCG, but the whole of Sydney has turned pink. Last night, a pub was offering pink food colouring to drop into your pint. No change in taste, but quite novel. This morning, at Central Station, the guy who yesterday was flogging green and gold caps for $5 has pink hats for $10. I've gone for a pink T-shirt. Without some of that colour, it would be like going to a fancy dress party in your civvies.
It's Jane McGrath day at the SCG!
Fans and pundits alike come dressed in pink for the third day's play in support of the McGrath Foundation. The charity raises awareness about breast cancer and funds for care nurses to help support families affected by the disease.
Image source, Getty ImagesAnd the Channel Nine team surely win some sort of award for this amount of co-ordination.
If boybands wore suits...
Image source, Getty ImagesEngland all-rounder Moeen Ali on TMS: "A lot of players have let the team down, especially in the first three games.
"As a team, we've got a point to prove. We've competed in all the games but we've ended up getting beat by a big margin. It's very frustrating and that's tough to take.
"When you don't win the first game, it's always tough. It's not easy to win away."
Image source, Getty ImagesWe've finally found one thing Steve Smith can't do - dance.
Australia spinner Nathan Lyon on ABC: "We're pretty happy with where we stand at he moment. Hopefully Uzzie and Smithy can build on that stand this morning.
"The way Nathan Crane was spinning it last night, and even Moeen Ali, I was rubbing my hands together and looking forward to the second dig."
On Australia's celebrations at the end of the series: "There are no good dancers so I don't think anyone will be dancing down the street. There will be a few beers to be had - we're pretty happy."
Image source, Getty ImagesMason Crane had his first bowl in Test cricket yesterday, and it was an energetic start from the young leg-spinner.
There was the odd bad ball, as there always will be by a young leggie plying his trade, but there was some decent stuff too.
He had Usman Khawaja looking edgy for a while, and another edge from Steve Smith dropped just short of Joe Root at slip.
"Mason has got the right style of energy and he gets plenty of revolutions on the ball," Michael Vaughan said yesterday.
"He didn't look fazed. He's not the kind of bowler you'd see playing every single Test match but we've seen enough today to know that, if England work well with him, there's things to be worked on over the next few years."
Image source, EPAEngland all-rounder Moeen Ali on TMS: "Normally we would say we were in a dcent position, but with Steve Smith in there it's hard to tell. We can't really find a way to get him out.
"With any batter, I feel there is somewhere I can bowl. With the way he's playing, there doesn't seem to be a way you can bowl at him. You have to hope he makes a mistake or someone bowls a jaffa.
"I go out and try and play the best I can every day. It's just a game of cricket - there's not much pressure at all."
Image source, Getty Images