Day eight of the Australian Open
Novak Djokovic beats Jiri Lehecka 6-3 6-4 7-6 (7-4) in fourth round
Jack Draper retires injured while trailing Carlos Alcaraz 5-7 1-6
Defending champion Aryna Sabalenka beats Mirra Andreeva 6-1 6-2
Coco Gauff joins her in quarter-finals after 5-7 6-2 6-1 win over Belinda Bencic
Britain's Henry Patten and Olivia Nicholls beat Italian top seeds to reach mixed doubles quarter-finals
Use audio icon to listen to live commentary from Melbourne on BBC Radio 5 Sports Extra (UK only)
Draper 5-7 1-5 Alcaraz*
Gigi Salmon
BBC Sport tennis commentator on BBC Radio 5 Live and BBC Sounds
Draper is pulling up off shots. He’s digging into that hip area trying to ease or move something.
This really happened quite quickly.
*Draper 5-7 1-5 Alcaraz
Carlos Alcaraz gets it but he doesn't celebrate, instead holding a hand up to his opponent to try and make sure Jack Draper is OK.
A grimace on the face of the British number one tells you he is not.
Image source, Getty Images*Draper 5-7 1-4 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Live and BBC Sounds
Draper is either hurting or the legs feeling very heavy – he doesn’t want to expend any more energy at the moment.
*Draper 5-7 1-4 Alcaraz
This looks like it's getting tougher by the minute for Jack Draper physically.
He's doing his best to reach each strike from Carlos Alcaraz, but it looking like it's doing more damage than good.
The Spaniard has got himself two break points.
*Draper 5-7 1-4 Alcaraz
The unforced errors keep coming from Carlos Alcaraz. That's 28 now.
Luckily for him, the winners are flying off his racquet too. Back-to-back forehand winners take him over the line.
Draper 5-7 1-3 Alcaraz*
Jack Draper claws his way back and gets the hold over and done with.
He's finally on the board in this second set. He needed that.
Image source, Getty Images*Draper 5-7 0-3 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Live and BBC Sounds
It is mesmerising watching his movement.
Alcaraz gets to balls that seemingly are imposable and what he does with the racquet face when he tracks it down like that.
*Draper 5-7 0-3 Alcaraz
Finally, the net cord works in Jack Draper's favour and it's advantage to the British number one as Carlos Alcaraz misses.
But my, oh my. Alcaraz pulls us back to deuce with an unbelievable get, sliding into the drop shot from Draper before dinking it back over.
*Draper 5-7 0-3 Alcaraz
We go to deuce as Carlos Alcaraz finds the fence, but he's got another break point after beating Jack Draper with a booming backhand winner.
*Draper 5-7 0-3 Alcaraz
Jack Draper can only stand and watch as Carlos Alcaraz fizzes another winner well out of reach.
The British number manages to slam down an ace, but he nets the next point and it's another break point for Alcaraz.
*Draper 5-7 0-3 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Live and BBC Sounds
This is where it gets quite tricky for Draper psychologically. All of a sudden, this match is going in a different direction quite rapidly, It’s been quite tight, until now.
He's fighting when the points are in play but in between the points he's looking weary.
*Draper 5-7 0-3 Alcaraz
It's all going downhill very quickly for Jack Draper as Carlos Alcaraz whizzes through his service game.
That's five games in a row for the Spaniard.
Draper 5-7 0-2 Alcaraz*
Annabel Croft
Former British number one on BBC Radio 5 Live and BBC Sounds
Alcaraz is having to adapt to a different height, different spin from Draper constantly.
That was crowd-pleasing stuff.
Draper 5-7 0-2 Alcaraz*
There it is. Total control from Carlos Alcaraz as he sends Jack Draper one way, then the other, and the 15th seed just can't keep up.
*Draper 5-7 0-1 Alcaraz
Jack Draper manages his way to deuce as Carlos Alcaraz goes long, but the Spaniard catches Draper flat footed on the next point with a cross-court forehand and earns himself another break point.
*Draper 5-7 0-1 Alcaraz
Oh dear. Three straight misses from Jack Draper who, after opening up a 30-0 lead, hands Carlos Alcaraz a chance to break.
*Draper 5-7 0-1 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Live and BBC Sounds
All out aggression from the Spaniard. He volleys so beautifully – there’s so much to learn watching him.
*Draper 5-7 0-1 Alcaraz
Two big serves allow Carlos Alcaraz to wriggle free and grab the hold.
Image source, Getty ImagesDraper 5-7 0-0 Alcaraz*
Too good. Carlos Alcaraz sprints to reach the ball and somehow has the control to lift over the most delicate of drop shots.
A series of misses from both players, however, takes us to deuce.
Jonathan Jurejko
BBC Sport in Melbourne
Warm applause as Jack Draper reappears. Let's see what shape he is in.
He does a few shadow forehands on the baseline between Alcaraz's service points.
Draper has talked a lot about his improved mental resilience - he's going to need every bit of that here.
