Who is going to tell Simon that it’s all over? With Zverev’s win that wraps up our Australian Open coverage for today, keep an eye out for Tumaini Carayol’s report from Melbourne Park on the site shortly.

Michelsen will be serving to stay in the match…

No such problems on his own serve for Zverev, ace, unreturnable to the Michelsen forehand, then a neat serve and volley for a rapid hold only that is held up by a double fault as the sixth seed goes 5-2 up.

Zverev wants to wrap this up quickly and he is swinging for the fences. One return goes very long but the next is a sweet backhand followed up by another winner to earn two break points. Now the German gets greedy and tries to force it, coughing up four straight points. Credit to Michelsen for hanging in, but Zverev gifted his opponent that hold.

New balls, bang, ace. There’s two more on the way to 40-15 and it looks like another routine hold, but some loose groundsrokes and wonderful forehand wrapped down the line from Michelsen gets it back to deuce. Bang, another ace, and then a Michelsen return goes long with his return on the next point. Zverev now 4-1 up.

Better from Michelsen and he is on the board in the third set.

Zverev in complete control, routine hold and now he is only three games away from the victory at 3-0 up.

Michelsen’s head is starting to drop a little and Zverev gets three early break points. Michelsen saves one but is picked off when coming into the net. Zverev leads 2-0 in what could well be the final set of the match at this rate.

Thanks Simon, this all looking quite straightforward for Zverev right now. The German easily holds in the first game of the third set, with Michelsen looking a little agitated on the other side of the net.

With that, I’m off for a little break. Tom Bassam is going to hold the fort.

At this point I’m going to step away from the blog for a little while. Tom Bassam is your man in the meantime.

A Zverev backhand clips the net cord and spins wide, 2-4. That’s the last point he loses in the set. He wins the next with a fine serve and backhand winner, 3-4. Michelsen hits a backhand just long when under little pressure, 4-4, and then a forehand just long when under a little more pressure, 5-4. The American comes to the net but his approach isn’t great and his first volley invites a pass on either wing; Zverev goes crosscourt to set up set point, which he wins by forcing an error with a backhand of little force but immaculate length. Zverev leads 6-2, 7-6 (4).

Zverev will have learned by now that dropping the ball limply in midcourt on the Michelsen forehand is a bad idea, often downright ruinous. That’s how he loses the first point, and then he loses the next to a brilliant sprinting backhand passing shot from Michelsen, who had looked out of the rally on two occasions. The set is really on a knife-edge now, Michelsen 3-2 up in the tie-break.

A few more holds – other than the game in which he was broken Zverev has lost only two points on his serve all set – and it’s 6-6 – tie-break time.

Michelsen holds to 15 – a double fault – and is 5-4 up, with Zverev suddenly serving to stay in the set.

A sudden change of momentum, as Michelsen holds to love and then breaks to 30! It’s 4-4 now in this set, and back in the balance.

Zverev holds to love, again. He has only played 13 service points in this set, holding to love, love and 15.

The clock is about to strike 11pm in Melbourne and just one match remains in play. And the chances of a 4am finish seem minimal at this point, with Zverev hitting a level that Michelsen simply can’t keep up with. He’s already a break up in set two, and leads 6-2, 3-1.

Elina Svitolina has broken again, ripping a forehand winner to take a 5-3 lead in the second set, and is suddenly serving for the match!

Zverev has wrapped up the first set 6-2, but Michelsen has started the second with a hold. On Margaret Court Viktorija Golubic has broken back, and is thus serving at 3-4 in the second set against Elina Svitolina, who won the first.

Michelsen is playing well against Zverev, but the older player is just winning the key points and controlling the key moments. In doing so he has taken a 5-2 lead in the first set, and is two breaks to the good.

Elina Svitolina is 6-2, 3-1 up against Viktorija Golubic now, having just broken to take control of the second set.

Here’s Reuters on Linda Noskova’s stunning victory over Iga Swiatek:

Top seed Iga Swiatek crashed out of the Australian Open on Saturday, losing 3-6, 6-3, 6-4 to Czech teenager Linda Nosková in the third round as her bid for a maiden Melbourne Park title and fifth Grand Slam trophy fell apart.

The Pole, more accustomed to breezing past opponents with the odd “bagel” or 6-0 scoreline thrown in, had struggled in Melbourne, enduring a first-set tiebreak in her opener against Sofia Kenin before fighting back from the brink of defeat to oust Danielle Collins last time out.

Much more here:

Zverev breaks Michelsen in the third game of the match, and thus leads 2-1. On Margaret Court Elina Svitolina leads 5-2 in the first set.

Alexes Zverev and Michelsen have just started their match on the Rod Laver Arena. Not only have they got the same(ish) first names they’re both wearing exactly the same shorts and exactly the same shirts, with white socks and white trainers. Zverev has a hairband, Michelsen – who at just the 6ft 4in is two inches shorter than his opponent - a baseball cap.

Elina Svitolina has started like the metaphorical steam train on Margaret Court, and is 2-0 up against Viktorija Golubic.

That was so impressive from Noskova, not just the level of her game but also her mentality, having never won more than a single match in any grand slam, playing in the main draw of the Australian Open for the first time, and up against the world No1 on a show court. Even the post-match interview was handled beautifully.

Swiatek holds to love, winning the game with a brace of aces. Noskova now to serve for the match. No pressure.

Noskova holds to 15, hitting a really amazing level. I’m waiting for it to dawn on her that she’s about to beat the world No1, but the match situation seems not to have affected her yet. She’s 5-3 up in the third, and Swiatek is serving to stay in the tournament.

Linda Noskova has broken again in the deciding set against Iga Swiatek! She’s 4-3 up now, and certainly playing the more consistent tennis.

Medvedev has gone a break up in the third set against Auger-Aliassime and the die now seems well and truly cast. He’s just held to 15 and leads 5-2, and by two sets to love.

And that’s why she’s world No1! Swiatek takes a bit of time before Noskova serves, winding herself up, and she then explodes into the game, every shot full of pace and aggression (even the one she thumps into the net) as she breaks back to 15. It’s 2-2 in the decider.

Swiatek comes up with her first double fault of the match to go 15-40 down, and a fractionally overhit forehand gives Noskova the break – she’s 2-1 up now in the decider!

Tumaini Carayol has filed his report on Cameron Norrie’s win over Casper Ruud, and here it is:

Cameron Norrie arrived in his Australian Open third round contest against Casper Ruud with the cards stacked against him. In their three previous meetings, he had lost each time while winning just one set, clear evidence of an extremely unfavourable match-up. If he did not make significant changes to his game, he would almost certainly lose.

It is to his immense credit that he did not hesitate to adapt his game and in the process he showed a new dimension to his tennis. Instead of grinding from behind the baseline as he has successfully done in his career, Norrie took the initiative at the net, he placed his opponent under constant pressure and he emerged with a stellar 6-4, 6-7 (7), 6-4, 6-3 win over Ruud to reach the fourth round.

Much more here:

No such dramas on Margaret Court, where Daniil Medvedev is now 6-3, 6-4, 1-0 up against Felix Auger-Aliassime.

Now Noskova holds to 15, and she roars into the deciding set with all the momentum – Swiatek won just one of the last 12 points of the second set!

Linda Noskova is playing so well at the moment, and Iga Swiatek is really struggling to cling on to her coattails. The Czech had to fight to win her most recent service game, saving a break point along the way, but then went and broke the world No1 to love, and is about to serve for the second set.

An update today on the “epic planning battle” between the All England Lawn Tennis Club and their neighbours over the possibility expanding their grounds.

On the Kia Arena it looks like Grigor Dimitrov v Nuno Borges might be going the distance: Dimitrov, the No13 seed, is a break and 4-1 up in the fourth having won the first on a tie break and lost the second and third 6-4, 6-2.

Cameron Norrie has a chat:

I’d only practised on this court once and I didn’t realise it was going to be this atmosphere and you guys were behind me from the beginning. I had to play really brave. It was a good mental performance to come out with a lot of energy in the third set and I kept a really good level throughout the match, I kept to my gameplan and I came through. I’ve been working really hard in the offseason trying to be a bit more aggressive and I managed to let go in the match today. Honestly I was just enjoying myself out there and I played really free, I loved it.

Next up for Norrie is the winner of tonight’s match between Alexes Zverev and Michelsen.

Norrie saves a break point on his way to taking a 5-2 lead in the fourth set, and he will serve for the match unless he breaks Ruud first.

The first sets on the two show courts end with near-perfect synchronicity, Swiatek going ahead against Noskova and Medvedev against Auger-Aliassime, both 6-3. Both sets involving precisely 63 points – Swiatek won 35-28 on points, Medvedev 34-29.

Now Norrie does break! Ruud slices a backhand into the net to give Norrie two break points at 15-40 and he only needs the one, coming to the net to put away his second volley. It’s 3-1 now in set four and Norrie is singing.

A break of serve on Rod Laver Arena! Iga Swiatek was expected to make short work of Linda Noskova and she now leads 5-2 in the opening set. Noskova is winning 31% of points on her second serve, which when she’s missing with 45% of her first-serve attempts is a recipe for disaster.

On the John Cain arena, Casper Ruud battles through a 10-point service game before eventually holding, and then Cameron Norrie holds to love. It’s 2-1 to Norrie in the fourth set, and also 2-1 to Norrie in sets.

Medvedev has claimed an early break in his match against Auger-Aliassime, and is 3-1 up in the first. Swiatek v Noskova remains on serve at 3-2.

Cameron Norrie breaks again to win the third set, and at 6-4, 6-7, 6-4 he’s a) playing really extremely well right now, and b) a set away from round four!

Here’s the Reuters summary of today’s goings-on, ahead of the evening session:

Second seed Carlos Alcaraz led a group of players sealing berths in the Australian Open fourth round for the first time on Saturday as the second seed enjoyed a short outing that finished when his Chinese opponent Shang Junchen pulled up injured.

Alcaraz eased through two sets against Shang 6-1, 6-1 before his ailing 18-year-old opponent threw in the towel while trailing 1-0 in the third. “This isn’t the way anyone wants to move on,” said the 20-year-old Spaniard, who takes on Miomir Kecmanovic next after the Serb beat 2023 semi-finalist Tommy Paul 6-4, 3-6, 2-6, 7-6 (7), 6-0. “I want to wish him a speedy recovery. He’s an amazing player. I was looking forward to this match. Unfortunately he wasn’t in the best shape possible.”

While Shang fell short in his bid to become the first Chinese man to reach the fourth round of a Grand Slam in the Open era, the country will have a women’s singles player in the second week as 12th seed Zheng Qinwen beat Wang Yafan. Zheng, who was named the WTA Tour’s most improved player in the 2023 season after winning Asian Games gold and the Zhengzhou title, held off her plucky compatriot 6-4, 2-6, 7-6 (8).

The 21-year-old will no doubt be inspired by memories of Li Na’s triumphant campaign in 2014. “I watched that final 10 times,” said Zheng. “Unbelievable player, the first Asian woman who won a Grand Slam, how can you not remember that?” Zheng, who reached the quarter-finals of the U.S. Open last year, next plays Oceane Dodin after she prevailed in an all-French third-round duel with Clara Burel 6-2, 6-4.

It was the end of the road for former Flushing Meadows champion Sloane Stephens after the American lost 6-7 (8), 6-1, 6-4 to Anna Kalinskaya. By making it to the fourth round of a Grand Slam for the first time, Kalinskaya is already assured of her biggest payday - nearly $250,000 - though she seemed in no rush to spend it. “I don’t have anything in mind. I’ll take it easy,” said Kalinskaya, who faces Italian Jasmine Paolini next. “Maybe a nice purse.”

French wildcard Arthur Cazaux sealed a breezy 6-3, 6-3, 6-1 win over Dutch 28th seed Tallon Griekspoor to reach the last 16 at a major for the first time, where he will meet ninth seed Hubert Hurkacz of Poland. Hurkacz downed Frenchman Ugo Humbert 3-6, 6-1, 7-6 (4), 6-3.

Dayana Yastremska will return to the fourth round of a Grand Slam for the first time since Wimbledon 2019 after her 6-2, 2-6, 6-1 win over American 27th seed Emma Navarro. The Ukrainian next faces twice former champion Victoria Azarenka, who battled back from 4-1 down in the second set to beat 2017 French Open winner Jelena Ostapenko 6-1, 7-5.

Cameron Norrie has landed just 59% of his first serves so far, which is suboptimal. Casper Ruud has won only one of his nine break points, which explains why the score remains so close. But there’s been a significant uptick in the third set – Norrie has a 71% first serve percentage in this one and Ruud’s has slipped to 59%. Norrie has just broken back and then held to now lead 4-3, on serve, in the third, and one set all.

The match between Felix Auger-Aliassime and Daniil Medvedev has just started on Margaret Court. Iga Swiatek is still warming up with Linda Noskova on Rod Laver.

Already today…

• Victoria Azarenka took her career record against Jelena Ostapenko to 4-0 with a 6-1, 7-5 victory.

• Carlos Alcaraz eased into round four after his opponent, Shang Juncheng, retired through injury early in the third set. The No. 2 was leading 6-1, 6-1, 1-0.

• Zheng Qinwen, the 21-year-old 12th seed, needed two hours and 40 minutes to make it past Wang Yafan 6-4, 2-6, 7-6 in an all-Chinese affair on Rod Laver Arena.

• Ukrainian qualifier Dayana Yastremska powered into round four, beating Emma Navarro of the US 6-2, 2-6, 6-1.

Full round-up incoming. Cameron Norrie is currently on court, and trailing Casper Ruud 4-6, 7-6, 3-2, and is a break down in the third.