In what one tennis reporter is calling a “Grand Slam” first, play at the Australian Open has been delayed on outdoor courts because of dust.

Outdoor play was originally slated for an 11.30am start, but that was pushed back to 12.30pm, as the clean up continued.

Dust and rain blanketed Melbourne on Wednesday night, with Tennis Australia working ferociously to make the courts safe for play on Thursday morning.

NICK’S SURPRISE BONUS

Nick Kyrgios won’t be thinking about it.

But if he defeats French veteran Gilles Simon this evening he’ll not only progress through to the third round, but reclaim the top Australian men’s ranking.

Kyrgios would jump as high as world No.23 in the live ATP rankings, overtaking Alex de Minaur, who sits at No.24.

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Out of the Open with an abdominal injury, de Minaur’s ranking will inevitably slide.

John Millman could also expect a huge rankings surge if he pulls off a huge upset over Roger Federer – something the Australian has done before.

DIRTY TACTICS? TENNIS ROW CONTINUES

A tennis row is brewing over accusations of

In the second set with Wozniacki leading 5-4 after having claimed the first, Yastremska called for the trainer and a medical time out.

Wozniacki wasn’t impressed and after the match suggested the 23rd seed was notorious for pulling such a stunt.

“Yeah, obviously she tried to break my rhythm,” Wozniacki, who went on to win the match 7-5, 7-5 said.

“And at 5-4 I don’t think there is anything wrong. She was running just fine.

“So that’s a trick that she’s done before, and I knew that it was coming.”

Dayana Yastremska of Ukraine receives medical treatment. Photo: Quinn Rooney/Getty Images

After the match, Yastremska was quick to dismiss accusations she’d faked anything and cited a left hip injury that she suffered in the Brisbane International recently, as well as right leg pain that had surfaced during this tournament.

“I took (the time-out) because I felt I needed it,” Yastremska said.

Yastremska’s coach Sascha Bajin, however, weighed in to set the record straight.

“Just to shut some people up and end this useless convo,” he posted.

“Dayana was really struggling since days with her leg, but since y’all are all doctors and coaches you know better then she herself or our whole team who’s working with her.”

MILLMAN’S CHEEKY FED REQUEST

John Millman knows Millmania is alive and well, but he also knows a little something about Melbourne Park’s affinity with Roger Federer.

The Australian said he wanted to follow the lead of countryman Nick Kyrgios and request to not play on Rod Laver Arena for his mouth-watering third-round match with the Swiss champion.

While Rod Laver Arena is the Australian Open’s hottest ticket, Millman knows just how well supported Federer is, especially for those willing to pay the price for Melbourne Park’s premier venue.

But if he managed to convince organisers to switch the 2018 US Open fourth-round rematch away from Rod Laver, Millman believes he could swing the majority of crowd support away from Federer and towards himself.

“I don’t think Craig [Tiley] will take me too seriously. More so just to throw a spanner in the works for Roger,” Millman said.

“I don’t know if he knows the other courts. He hits on the outside ones, but he hasn’t played too many. I don’t know if he would have played too many matches on the outside ones.

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“Look, I love a vocal crowd. Obviously the matches I played, probably two really special courts, Show Court 3 and Melbourne Arena, are notorious for the crowd support you get there, the vocal Aussies.

“I very much consider myself, and I think the people who know me, know that I’m just your typical Aussie bloke. So I’m one of the people. The people get the ground passes and the people go to those courts.

“Look, I know it’s a little corporate at Rod Laver, but it’s still a pretty cool court to play on.”

Federer was caught off guard by the request, admitting he just assumed the match would be scheduled for the biggest court.

“I’m always happy when the crowd gets involved. Look, I don’t choose which court I play on. I don’t know if he was joking or if he was serious,” Federer said.

“You would think a match like this should be played at Rod Laver Arena maybe. I don’t know who else, if the other seed has good matchups, as well.

“He knows Margaret Court Arena better, Melbourne Arena. But I haven’t thought of it. I figure this was always going to be on Rod Laver Arena, if this happens.

“I’m ready to go anywhere, whatever it takes.”

Aussie’s shot at dual Slam champion

Ajla Tomljanovic must overcome former world No.1 and two-time grand slam champion Garbine Muguruza if she is to advance to the third round of the Australian Open for the first time.

It’s a tough task for the Queenslander, but the world No.52 has done it before and is approaching Thursday’s second-round clash brimming with confidence.

Tomljanovic, who hadn’t made it past the first round at Melbourne Park in her past three attempts, dumped 31st seed Anastasija Sevastova out of the tournament 6-1 6-1 on Tuesday.

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NEVER CHANGE, ASH:

The pair have played each other twice before for one win each, Tomljanovic prevailing on a hard court in Miami six years ago before Muguruza’s rise to world No.1 in 2017.

Muguruza, the French Open champion in 2016 and the Wimbledon title winner a year later, is unseeded at Melbourne Park, having slipped to No.32 in the rankings.

The Spaniard has battled illness since arriving in Australia, but overcame a sluggish start to fight past American qualifier Shelby Rogers 0-6 6-1 6-0.

Local wildcard Priscilla Hon must also beat a former world No.1 to make it to the third round, the Queenslander set to face 17th-seeded German and 2016 Open champion Angelique Kerber on Thursday.

Hon defeated Ukrainian Kateryna Kozlova 6-3 6-4 to advance, while three-time grand slam winner Kerber, who overcame a hamstring injury to take her place in the draw, prevailed against Italian qualifier Elisabetta Cocciaretto 6-2 6-2.

Nick Kyrgios headlines the Thursday night action when he faces French veteran Gilles Simon on his favoured Melbourne Arena, aka ‘the people’s court’.

Rafael Nadal is also in action tonight with the world number one facing Argentina’s Federico Delbonis in the second match of the Rod Laver Arena night session.

AUSTRALIAN OPEN DAY 4 ORDER OF PLAY

All courts begin play at 11am EDT unless otherwise listed

Rod Laver Arena

Day session

Garbine Muguruza (ESP) vs Ajla Tomljanovic (AUS)

Laura Siegemund (GER) vs Karolina Pliskova (CZE) [2]

Egor Gerasimov (BLR) vs Alexander Zverev (GER) [7]

Night session (from 7pm)

Harriet Dart (GBR) vs Simona Halep (ROU) [4]

Rafael Nadal (ESP) [1] vs Federico Delbonis (ARG)

Show Court 1

Day session

Belinda Bencic (SUI) [6] vs Jelena Ostapenko (LAT)

Daniil Medvedev (RUS) [4] vs Pedro Martinez (ESP)

Priscilla Hon (AUS) vs Angelique Kerber (GER) [17]

Night session (from 7pm)

Andreas Seppi (ITA) vs Stan Wawrinka (SUI) [15]

Elina Svitolina (UKR) [5] vs Lauren Davis (USA)

Melbourne Arena

Donna Vekic (CRO) [19] vs Alize Cornet (FRA)

Doubles match

Alex Bolt (AUS) vs Dominic Thiem (AUT) [5]

Not before 6:45pm – Nick Kyrgios (AUS) [23] vs Gilles Simon (FRA)

Other Aussies in action

Third on Court 3 – Jaume Munar (ESP) vs Alexei Popyrin (AUS)

Second on Court 8 – Arina Rodionova (AUS) vs Kiki Bertens (NED) [9]

Follow Day 4 of the Australian Open in our live blog below!