Eighteen-year-old Mirra Andreeva beaten 2-6 4-6 by 12th seed Elina Svitolina in fourth round
Home hope Alex de Minaur defeats Alexander Bublik 6-4 6-1 6-1
Sixth seed to face world number one Carlos Alcaraz in last eight
Jakub Mensik withdraws through injury to give Novak Djokovic walkover into quarter-finals
Two-time champion Aryna Sabalenka through to face Iva Jovic, 18, next
Third seeds Coco Gauff and Alexander Zverev also advance
Svitolina 6-2 3-2 Andreeva*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
I don't think Mirra Andreeva is hitting the ball nearly as well as she would like, maybe that's because she hasn't been allowed to.
Svitolina 6-2 3-2 Andreeva*
That's six breaks of serve in 12 games in this fourth-round match.
Elina Svitolina ensures we don't have a seventh (yet) as she sends down an ace to seal a hold to 30.
A quarter-final meeting with American third seed Coco Gauff awaits the winner of this one.
*Svitolina 6-2 2-2 Andreeva
Remember yesterday when the temperature in Melbourne was close to 39C?
Well, jumpers, coats and tracksuit tops are the order of the day in the coaching boxes during tonight's evening session.
Back on court, how quickly things have changed.
Elina Svitolina gets the break back, helped by an errant forehand by Mirra Andreeva that goes well long on break point.
Svitolina 6-2 1-2 Andreeva*
And Elina Svitolina digs very deep to get on the scoreboard in the second set.
An ace at 15-40 down builds some momentum and she eventually holds serve, limiting the damage of Mirra Andreeva's purple patch to a single break (for now).
*Svitolina 6-2 0-2 Andreeva
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
Elina Svitolina has just lost her way a little bit because suddenly down the other end you've got a very different opponent to the one she's just faced in that first set.
She's going to have to dig deep to get things back on track.
*Svitolina 6-2 0-2 Andreeva
Mirra Andreeva races into a 0-30 lead in Elina Svitolina's latest service game and should really have made it 11 successive points won, but goes wide with a forehand.
No matter - the next point, she ends a long rally with a gorgeous drop shot to bring up two break points.
This is lights out tennis from the eighth seed in the past few minutes.
*Svitolina 6-2 0-2 Andreeva
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
That was an interesting rally and that was not the same pattern that we've witnessed from that opening set.
It was a moonball, it was a slice kind of shot and just drawing Elina Svitolina forward and then finding the gap down the line.
Just a totally different construction of the point, but really clever and intelligent.
Coverage continues on BBC Radio 5 Live Sports Extra via the link at the top of this page.
*Svitolina 6-2 0-2 Andreeva
What a backhand winner down the line to seal a love hold.
Eight points in a row to start the second set for Mirra Andreeva, who is flying right now.
Svitolina 6-2 0-1 Andreeva*
Mirra Andreeva carried a notebook with her as she left the court at the end of the first set.
Whatever's written in there, it's working.
Three break points for the Russian - and she volleys away a winner at the net to gain an early advantage at the start of the second set.
*Svitolina 6-2 0-0 Andreeva
Elina Svitolina is a set away from a fourth quarter-final appearance at the Australian Open.
Is Mirra Andreeva's Melbourne campaign going to end in the fourth round for the third year in a row?
It will be Ukrainian Svitolina to serve first in set two against her teenage Russian opponent.
*Svitolina 6-2 0-0 Andreeva
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
I think Mirra Andreeva is going to be very disappointed with how that panned out, she just couldn't get stuck in. There were too many unforced errors, too many missed balls down the line.
Image source, Getty ImagesSvitolina 6-2 Andreeva
Image source, ReutersShe gets it this time. Elina Svitolina takes the opener.
Mirra Andreeva held serve just once in that first set and she understandably takes some time off court to recuperate.
Svitolina 5-2 Andreeva*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
Elina Svitolina is on a roll, she's got momentum behind her, wind in her sails and she's motoring through towards the end of this first set.
She's just been tougher mentally in some of these points.
Image source, Getty ImagesSvitolina 5-2 Andreeva*
Elina Svitolina can't get it on the first time of asking. Or the second.
Third time lucky?
Svitolina 5-2 Andreeva*
Elina Svitolina takes advantage of Mirra Andreeva's tame second serves to land two huge backhand winners.
And another miss from the Russian hand her three set points.
Svitolina 5-2 Andreeva*
Elina Svitolina wipes out the break point with a fierce cross-court winner and she ultimately makes it through her service game unharmed as Mirra Andreeva swipes a return into the net.
"Come on," she yells. One more game and she's got the first set in the bag.
*Svitolina 4-2 Andreeva
Mirra Andreeva shakes things up with a sliced volley that allows her to come to the net and bring down an overhead. Advantage.
*Svitolina 4-2 Andreeva
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
It seems like we've got many twists and turns in this opening set, it's really competitive and very compelling.
*Svitolina 4-2 Andreeva
A first show of emotion from Mirra Andreeva, who lets out a massive roar as she whips a forehand winner just over the net post and down the line.
Even Elina Svitolina has to applaud that.
The Ukrainian misses the next point to give Andreeva the chance to break back, but a forehand winner brings us to deuce.
*Svitolina 4-2 Andreeva
Mirra Andreeva pushes a backhand into the fence and Elina Svitolina regains her break advantage.
