Novak Djokovic into fourth round with 6-3 6-4 7-6 win over Dutchman Botic van de Zandschulp
Second seed Iga Swiatek wins 6-1 1-6 6-1 against Anna Kalinskaya
Two-time champion Naomi Osaka pulls out through injury before third-round match with Maddison Inglis
Play was suspended for almost five hours on outside courts as temperatures neared 40C.
2014 champion Stan Wawrinka beaten by nine seed Taylor Fritz on farewell appearance
Jannik Sinner struggles physically during four-set win against Eliot Spizzirri
Van de Zandschulp 3-6 4-6 6-5 Djokovic*
Botic van de Zandschulp keeps Novak Djokovic honest, chasing lost causes and swinging freely safe in the knowledge that he will at least play a tie-break in this third set.
At 30-30, the Dutchman produces some incredible defence to stay in the point and Djokovic nets.
A set point...
Van de Zandschulp 3-6 4-6 6-5 Djokovic*
A look to the sky (or more accurately, the roof) from Novak Djokovic as his attempt at a slice backhand down the line only just drifts wide. That would have brought up 30-30, but instead it's 40-15.
Then Djokovic goes long and gives up the game.
Botic van de Zandschulp is guaranteed at least a tie-break in set three.
*Van de Zandschulp 3-6 4-6 5-5 Djokovic
Image source, EPANovak Djokovic holds to love again, with Botic van de Zandschulp unable to make any sort of impression on the fourth seed's serve in recent attempts.
Djokovic does some twists to try to keep his upper body loose as he prepares for his next return game.
He'll be desperate to get this wrapped up without going to a fourth set.
Van de Zandschulp 3-6 4-6 5-4 Djokovic*
Botic van de Zandschulp registers a hold to love of his own.
The way both have served in the past few games, it looks like we're heading for a third-set tie-break.
*Van de Zandschulp 3-6 4-6 4-4 Djokovic
Quickly nipped away for some water and by the time I returned, Novak Djokovic had held serve again to level the third set.
He has won eight straight points on serve since being broken in the fourth game of this set.
Van de Zandschulp 3-6 4-6 4-3 Djokovic*
Aces number 13 and 14 of the match earn Botic van de Zandschulp another service hold.
*Van de Zandschulp 3-6 4-6 3-3 Djokovic
Novak Djokovic races through another service game to level the third set.
The umpire calls for new balls, so both players grab new racquets from their bags.
Van de Zandschulp 3-6 4-6 3-2 Djokovic*
The joy of breaking serve didn't last long for Botic van de Zandschulp, who is suddenly facing two break points on his own serve.
He nets a forehand on the second of them and hands that break straight back to Novak Djokovic.
*Van de Zandschulp 3-6 4-6 3-1 Djokovic
Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra
You can see why Novak Djokovic was grumpy not taking his opportunities in the second set to finish off quickly.
Botic van de Zandschulp is dangerous, he can flash winners and you're never totally comfortable with him.
Listen to BBC Radio 5 Sports Extra coverage via the link at the top of this page.
*Van de Zandschulp 3-6 4-6 3-1 Djokovic
Novak Djokovic saves the first two break points but Botic van de Zandschulp leathers a forehand return past the 38-year-old - with a slight nick off the top of the net - to secure the break.
This one is not over yet...
Van de Zandschulp 3-6 4-6 2-1 Djokovic*
Novak Djokovic is 0-40 down on serve and the Serb's mood is not helped by someone calling out as he's about to toss the ball in the air to start his service motion.
Swiatek 6-1 1-6 6-1 Kalinskaya
It was another messy performance from Iga Swiatek, who is trying to complete the career Grand Slam in Melbourne.
She hit 29 unforced errors to 24 winners, dropped serve three times in the second set, and had to save three break points as she struggled to close out the match.
Van de Zandschulp 3-6 4-6 2-1 Djokovic*
Pat Cash
Former Wimbledon champion on BBC Radio 5 Sports Extra
Novak Djokovic rolled his ankle for a fraction of a second there and went down to grab it.
He quickly realised it was nothing more than a little jerking motion and caught the edge of his shoe.
He went down pretty quickly there and almost banged the side of his knee, he might have a little bruise on the side there.
Swiatek 6-1 1-6 6-1 Kalinskaya
Second seed Iga Swiatek following her three-set win over Anna Kalinskaya: "It's not surprising for me because I know Anna can play amazing tennis. I didn't feel like I was playing worse in the second set. I feel she played 'in' all of the balls that went out in the first. I wanted to focus on myself, no matter what was going on at the other end. The momentum changed for sure."
On facing Australian qualifier Maddison Inglis in round four following Naomi Osaka's withdrawal: "I don't know what my reaction should be. Hopefully, Naomi is well. She was playing great - I saw from the scores.
"It's exciting to be in the fourth round again. Guys [speaking to the crowd], hopefully you're not going to be harsh on me playing an Australian. A lot of Polish flags here, so please make it even!"
Van de Zandschulp 3-6 4-6 2-1 Djokovic*
Image source, ReutersOh dear - Novak Djokovic takes a tumble at the back of the court and takes a little while to get back to his feet.
He was attempting to push off his right foot but didn't have it quite planted properly. He seems to be OK but that could have been a whole lot worse.
The trainer treated Botic van de Zandschulp for a shoulder complaint during the second set and is out on court again at the change of ends - this time for Djokovic.
Looks like he might have a blister on the base of his right foot.
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A fully fit Botic is clearly a very difficult match-up for Djokovic on hard court. Unfortunately, he is not.
Pim in Denmark
Swiatek 6-1 1-6 6-1 Kalinskaya
Image source, ReutersThis time indeed!
She drags Anna Kalinskaya corner to corner across the baseline and although the ailing 31st seed manages to spoon her forehand back into court, Iga Swiatek rushes the net and hammers home a forehand volley.
The second seed is through in three sets but it was not at all convincing.
Van de Zandschulp 3-6 4-6 1-0 Djokovic*
What has Botic van de Zandschulp got left? Enough to trouble the 24-time Grand Slam champion?
He holds serve at the start of set three.
Small steps at the bottom of a very tall mountain that he has to climb if he's going to extend his stay at this year's Australian Open.
*Swiatek 6-1 1-6 5-1 Kalinskaya
A booming serve is returned into the net. This time?
*Swiatek 6-1 1-6 5-1 Kalinskaya
Iga Swiatek is dragged from one corner to the other and loses her racquet as she stretches for a backhand. She's making a hash of closing this out.
Anna Kalinskaya sends a forehand wide. Back to deuce we go.
