World number one Carlos Alcaraz beats Australia's Alex de Minaur 7-5 6-2 6-1 to book semi-final against Alexander Zverev
Alcaraz into last four in Melbourne for first time as he chases career Grand Slam
Elina Svitolina beats Coco Gauff 6-1 6-2 to reach women's semi-finals
Svitolina will face world number one Aryna Sabalenka for place in Saturday's final
Start of wheelchair tournament postponed until Wednesday as temperature expected to reach 42C in Melbourne
*Alcaraz 7-5 6-2 3-1 De Minaur
"Come on!" shouts Alex de Minaur as Carlos Alcaraz goes long.
That seems to give the Australian a bit of extra motivation and he manages to stop the rot and get himself on the board in set three.
Alcaraz 7-5 6-2 3-0 De Minaur*
Carlos Alcaraz makes his way to the net and there's no way past for Alex de Minaur as he sees his return easily swatted away.
The top seed whacks a forehand long to pull De Minaur level at 30-30. Alcaraz doesn't seem to mind. He goes and has a chuckle about it with his team.
Alcaraz 7-5 6-2 3-0 De Minaur*
After a bit of back and forth on deuce, Carlos Alcaraz takes command and catches Alex de Minaur out with a tricky backhand slice.
The Spaniard has won the past five games and is showing no signs of slowing down.
*Alcaraz 7-5 6-2 2-0 De Minaur
Image source, Getty ImagesAlex de Minaur can't believe it. He's missed the baseline by a hair's breadth and a collective groan sounds around Rod Laver Arena.
The sixth seed holds his hands out in disbelief.
*Alcaraz 7-5 6-2 2-0 De Minaur
The door opens slightly for Alex de Minaur as a couple of unforced errors fly off Carlos Alcaraz's racquet.
Alcaraz looks like he's slammed it shut with a booming backhand winner, but the Spaniard goes long on the next point and De Minaur has a chance to break back. This could be crucial for the Australian.
*Alcaraz 7-5 6-2 2-0 De Minaur
Image source, Getty ImagesThere's complete silence around Rod Laver Arena as Alex de Minaur goes wide. They know he's running out of time.
The sixth seed is looking rather dejected now and he smashes a ball down in frustration after handing Carlos Alcaraz an early break.
Alcaraz 7-5 6-2 1-0 De Minaur*
The world number one is on a roll. Carlos Alcaraz has to reach Alex de Minaur's serve on the stretch, but he recovers brilliantly and is straight back in the point and he whips away a forehand winner for a 0-30 lead.
De Minaur claws one point back but Alcaraz fizzes a backhand down the line for an early break point in the third set.
Alcaraz 7-5 6-2 1-0 De Minaur*
Carlos Alcaraz wants this over and done with now.
He races through to a love hold to get the third set under way.
*Alcaraz 7-5 6-2 0-0 De Minaur
Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra
De Minaur played as well as he could have for the first set and a half, the last few games have had had a few unforced errors.
The serving of both players has improved slightly in the second set - but only slightly.
*Alcaraz 7-5 6-2 0-0 De Minaur
Jonathan Jurejko
BBC Sport tennis news reporter in Melbourne
Alcaraz was nowhere near his best earlier. He’s closer to it now.
De Minaur bows his head and stares at his team. That’s the look of resignation slapped across his face.
He’s only won two sets in his five previous defeats by Alcaraz.
Chances of winning three were slim at the start of the match. They are next to nowt now, I’d respectfully suggest.
*Alcaraz 7-5 6-2 0-0 De Minaur
Image source, ReutersThere it is. Carlos Alcaraz has got one foot in the semi-finals.
He's just a set away from a last-four encounter with Alexander Zverev.
Alcaraz 7-5 5-2 De Minaur*
Alex de Minaur saves the set point with a blistering cross-court winner, but he sends the next point long to give the Spaniard another chance.
Alcaraz 7-5 5-2 De Minaur*
Carlos Alcaraz is chattering away to his team in between points. My Spanish isn't too hot so I can't make out what they're saying, but whatever advice they're giving the top seed is working so far at this year's Australian Open. He's yet to drop a set in Melbourne.
And now he's got himself set point for a two-set lead.
Alcaraz 7-5 5-2 De Minaur*
Carlos Alcaraz escapes unharmed and he moves one game away from a two-set lead.
The world number one looks over to his team, bares his teeth and shakes his racquet. He's locked in.
*Alcaraz 7-5 4-2 De Minaur
Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra
The rallies look so fast between these two because they are only a couple of feet behind the baseline at all times.
It kind of looks like a video game sometimes.
*Alcaraz 7-5 4-2 De Minaur
Carlos Alcaraz plants his first serve into the net, but Alex de Minaur - after taking the second serve early - mis-hits the ball and skews it long.
Deuce.
*Alcaraz 7-5 4-2 De Minaur
What's going on here? A double fault from Carlos Alcaraz, and all of a sudden Alex de Minaur has a chance to get back on serve.
*Alcaraz 7-5 4-2 De Minaur
Jonathan Jurejko
BBC Sport tennis news reporter in Melbourne
"Na-na na-na na-na na nahhhh, A-lex De Min-aur, De Min-aur, Aaaa-lex De Min-aur!"
You know the one. You’ve heard it at a Premier League football ground. And a cheesy pop night at your local club.
Rod Laver Arena finds its voice thanks to a group of lads decked out in the same kit as De Minaur.
They’re trying their best to lift their man. Unfortunately that won’t improve his serve - which is the key differential in the skillsets of these two players.
*Alcaraz 7-5 4-2 De Minaur
Image source, Getty ImagesThat's better from Alex de Minaur as he pulls Carlos Alcaraz out wide before delivering a killer cross-court forehand for a 40-0 lead.
And he gets the hold as Alcaraz overcooks a return.
Alcaraz 7-5 4-1 De Minaur*
Gigi Salmon
BBC Sport tennis commentator on BBC Radio 5 Sports Extra and BBC Sounds
That big grin - who else plays tennis with such a big smile on their face? Even if he isn't winning the point, he loves the chase, the battle and the contest.
