For the first time in 20 years, four or fewer of the top eight seeds in the men's singles will progress to the fourth round of the Australian Open.

Daniil Medvedev's defeat to Sebastian Korda on Friday meant he joined Casper Ruud, Taylor Fritz and defending champion Rafael Nadal in heading home early from the season's first grand slam.

According to Opta, it is the first time since 2003 that the round of 16 in Melbourne will include four or fewer of the top eight players in the competition.  

Nine-time champion Novak Djokovic, meanwhile, is struggling with injury ahead of his third-round tie with Grigor Dimitrov on Saturday, while world number six and fifth seed Andrey Rublev faces a tough test against Dan Evans.

Stefanos Tsitsipas is sure of his place in round four after the Greek third seed beat Tallon Griekspoor in straight sets. Felix Auger-Aliassime will go up against Jiri Lehecka for a place in the last eight.

Carlos Alcaraz is on course to return to tennis action next month after the world number one stepped up his recovery from injury by practising on clay.

The 19-year-old Spaniard was ruled out of the Australian Open after suffering a hamstring injury in pre-season.

That was another blow for Alcaraz, who cut short an outstanding 2022 season due to an internal oblique muscle tear he sustained during a Paris Masters quarter-final against Holger Rune in November.

Alcaraz won five titles last year – including a maiden grand slam triumph at the US Open – and surged to the top of the ATP rankings.

The teenager delivered an encouraging update on his fitness on Friday, posting pictures of himself in action on a clay court and writing: "Back on court and back on clay. VAMOS!"

Alcaraz is set to make his comeback at the Argentina Open, which start in Buenos Aires on February 13.

He won Masters titles in Madrid and Miami last year, along with triumphs in Barcelona, Rio de Janeiro and at Flushing Meadows.

Kurtley Beale has been stood down by Rugby Australia after he was charged over an alleged sexual assault.

The NSW Waratahs back was arrested by police over reports a 28-year-old woman was assaulted in a Sydney pub on December 17.

Beale, a 95-cap Wallabies veteran, was taken into custody after he was stopped in Kingsford on Friday by authorities.

"Detectives from Eastern Suburbs Police Area Command took carriage of the matter and commenced an investigation under Strike Force Titheradge," read a police statement.

"He was taken to Waverley Police Station and charged with two counts of sexually touch another person without consent, incite another to sexually touch them without consent and sexual intercourse without consent.

"The man was refused bail to appear before Parramatta Bail Court tomorrow [on Saturday]."

In a statement of their own, Rugby Australia said Beale has been suspended from all forms of rugby until the conclusion of legal proceedings and its own investigations.

"This step follows Mr Beale’s arrest and subsequent charge with serious criminal offences, and is in line with Rugby Australia’s professional player code of conduct," Rugby Australia added.

"The Rugby Union Players Association (RUPA) has been informed of this development. As this remains a legal matter, there will be no further comment until the conclusion of these proceedings."

Beale made his Wallabies debut in 2009 and has gone on to make close to a century of appearances, including playing in the 2015 Rugby World Cup final.

He was included in a 44-man training squad by former coach Dave Rennie ahead of this year's World Cup, before the latter was replaced by Eddie Jones.

Coco Gauff is excited about the prospect of players from the United States winning both singles titles at the same grand slam again following a bright start to the Australian Open for the men.

The last American to win the men's singles crown at any grand slam was Andy Roddick at the 2003 US Open.

The USA is still way out in front for all-time grand slam men's singles titles with 147, though 19 years and counting is comfortably their worst barren spell during the Open Era.

This comes after 2003 was the 15th year in a row that the USA had at least one champion in the men's majors, with the likes of Pete Sampras and Andre Agassi both prolific winners.

Of course, the drought did not extend to the women, with Serena Williams, Venus Williams, Sloane Stephens and Sofia Kenin all winning at least once since Roddick's success at Flushing Meadows.

But with eight of the last 32 in the men's draw representing the USA, there is a renewed sense of optimism – and that is even accounting for their highest seed, number eight Taylor Fritz, falling in the second round.

Gauff – who beat compatriot Bernarda Pera on Friday – is the USA's next great female hope, and she is looking forward to the day Americans claim a men's and women's double at the same slam.

Asked if there was a refreshing sense of excitement around the men, Gauff said: "Yeah, definitely. I definitely think on the men's side they're thriving.

"It's like eight people in the round of 32 I saw. I think it's incredible. It's just people that you've been rooting for for a long time, and some new faces, too, that people probably haven't been rooting for a long time but fell in love with.

"I'm just excited. On the women's side, we're always like, 'the guys need to catch up, you guys need to put in your work'. I think they're here. I'm hoping that eventually, hopefully soon, we'll have our slam champion on the men's side.

"That would be pretty cool if an American woman and guy could win the same slam. I don't know when the last time that's happened or if it's ever happened. I'll be pretty excited."

Coincidentally, it last happened at Melbourne Park. In 2003, Andre Agassi and Serena Williams were victorious at the Australian Open.

Gauff is not getting carried away, but her perception is there is genuine belief among the men now, which is being fed by unity.

"I definitely think the guys are feeling it," she said. "You can see it. I think it really comes from, not the women, but the same dynamic, where everybody is doing well, so it makes you want to do well.

"We're all not competing with each other but pushing each other. I think that's what the men are having.

"They're competing against each other but also pushing each other to be better. I'm pretty sure all the American guys get along, at least that's what I think."

There were setbacks to American men's title hopes on Friday as Frances Tiafoe and Mackenzie McDonald both lost at the last-32 stage, but there was a hugely notable win too, with Sebastian Korda beating seventh seed, two-time Australian Open runner-up and former US Open champion Daniil Medvedev in straight sets.

Iga Swiatek is growing in confidence by the day after she blew Cristina Bucsa to reach the fourth round of the Australian Open.

The world number one ruthlessly dispatched the Spanish qualifier 6-0 6-1 in just 55 minutes on Margaret Court Arena on Friday.

Swiatek won the French Open for a second time last year before claiming her first US Open title and the 21-year-old is the favourite to be crowned champion at Melbourne Park.

Reflecting on her progress through the draw so far, the Pole believes she is making great strides in her quest for a fourth grand slam triumph.

"I feel I'm more and more confident since day one here," she said. "I feel like I've done so much work to feel more confident, more relaxed on court.

"I'm pretty happy I did it because it's just a little bit easier. Whe you actually play those matches, you can feel the rhythm a little bit more.

"I don't feel like the tournament is going to start now, because first rounds are always challenging.

"I'm trying to treat every match separately. I always try to have the same mindset. I can just say that I feel more confident because I'm played a couple of matches here."

Swiatek will do battle with Elena Rybakina in the fourth round and will ensure she does her homework before facing the Wimbledon champion.

"Tactically, I'm not prepared yet. We played an exhibition in Dubai, [but] it's hard kind of to take a lot from that match," she said.

"I'm pretty sure my coach is going to be ready to give me some tips. We'll see [but] I'm not really thinking about that today."

Tournament director Craig Tiley has no plans to change the Australian Open schedule despite a 4am finish for Andy Murray and Thanasi Kokkinakis.

Murray stormed back from two sets down to beat Australian Kokkinakis 4-6 6-7 (4-7) 7-6 (7-5) 6-3 7-5 early in the early hours of Friday morning on Margaret Court Arena.

The three-time grand slam champion sealed an incredible victory in a second-round thriller that took five hours and 45 minutes to settle.

That was the longest match in Brit Murray's career and the 4.05am finish was the third-latest in the history of the sport.

Murray made his feelings over having to play at that time of day very clear, but Tiley did not see an alternative option.

"You would expect from 7pm to 12pm (the evening session) in that five-hour window, you would get two matches," Tiley said. "We also have to protect the matches. If you just put one match at night and there’s an injury, you don't have anything for fans or broadcasters.

"At this point there is no need to alter the schedule. We always look at it when we do the debrief like we do every year, we've had long matches before, at this point we've got to fit the matches into the 14 days so you don't have many options."

Murray vented his frustration at the chair umpire during the match and stated after his victory that he did not see the logic in playing so late.

"I don't know who it's beneficial for," Murray said. "We come here after the match and that's what the discussion is, rather than it being like, 'epic Murray-Kokkinakis match'. It ends in a bit of a farce.

"Amazingly people stayed until the end, and I really appreciate people doing that and creating an atmosphere for us. Some people obviously need to work the following day and everything.

"But if my child was a ball kid for a tournament and they're coming home at five in the morning, as a parent, I'm snapping at that. It's not beneficial for them. It's not beneficial for the umpires, the officials. I don't think it's amazing for the fans. It's not good for the players.

"We talk about it all the time, and it's been spoken about for years. But when you start the night matches late and have conditions like that, these things are going to happen."

Philadelphia 76ers coach Doc Rivers did not hide his frustration with certain elements of his team's play despite beating the Portland Trail Blazers 105-95 on Thursday.

The Sixers made it four wins on the bounce, all of which have been on the road, with Joel Embiid and James Harden playing key roles.

Embiid's 32 points made it the seventh game in a row he has reached at least 30, while Harden posted a triple-double of 16 points, 14 assists and 10 rebounds.

The Sixers looked to be coasting at one stage, finding themselves 26 points to the good, but the Trail Blazers made life a little trickier towards the end.

Rivers' team got the job done as they improved to 29-16 in the East, behind only the Boston Celtic and Milwaukee Bucks, though he was certainly not completely satisfied.

He was particularly irritated by the Sixers' poor handling of the Trail Blazers' trapping, and he was not impressed by how spread out his players were.

Asked how they coped with respect to trapping, Rivers said: "Poorly, but we also took advantage of some of it as well.

"I didn't think trapping was that hard, our spacing was horrendous, and we're great at spacing most nights, but tonight we kept leaving two guys on the other end.

"I'm hoarse from yelling, just getting one to cut through and we basically didn't do it. We got away with three or four more than I thought they could've had. But that's easy to fix."

In letting Portland back into the contest somewhat in the second half, Rivers felt there was a hint of complacency in the Sixers' performance.

As such, he surmised they are still not at a stage where they can consider themselves anything more than a "good" team.

He added: "There's no lesson, the lesson is execute. I just thought we didn't.

"You get leads sometimes and they're hard, NBA leads shrink quickly and then you get complacent, and I think we did a little bit of that.

"But in that, one thing I like is we kept playing defense, and that's a good sign.

"I think we're good, and I think we can be really, really good. But we have work to do.

"We can't expect to come in and just show up and win, we have to go out and do something about it."

Nevertheless, with the likes of Embiid and Harden in their arsenal, the Sixers have the kind of star quality that can drag them through the mud even when they are not at their optimal level as a unit.

That is not lost on Embiid.

"I think from the beginning it was easy," he said of linking up with Harden, who joined from the Brooklyn Nets last February.

"When you've got two guys with high basketball IQs, you can figure it out everything easy.

"So, it's all about just playing off of each other. We've been doing a wonderful job of doing that."

Jacque Vaughn will continue challenging Ben Simmons to answer his responsibilities after another disappointing outing saw him ejected in the Brooklyn Nets' loss to the Phoenix Suns.

Simmons was sent from the game for arguing with referee Eric Lewis having played just 18 minutes, as the Nets continued to struggle in the injury-enforced absence of Kevin Durant in a 117-112 loss – their fourth defeat in a row.

In his previous outing, Simmons had put up his first triple-double for the Nets in Tuesday's defeat to the San Antonio Spurs, but a season of ups-and-downs went on in Phoenix, where he spent most of the game contending with foul trouble.

Averaging just 7.5 points, 6.8 rebounds and 6.3 assists this campaign, the Nets need more from a player who has All-Star pedigree.

Vaughn is determined to spark more consistency in Simmons, who arrived last February as part of a blockbuster trade that sent James Harden to the Philadelphia 76ers.

"We need him to be productive, and that is without the fouls," Vaughn said. "That is helping us rebound the basketball. That is playing with poise and composure. That is pushing the pace for us.

"So unfortunately when you're a really good basketball player, your list is long and so are the responsibilities. And hopefully, we'll continue to ask of those things and challenge him and challenge this group to be able to answer those long lists."

For his part, Simmons felt the decisions given against him lacked consistency.

"I don't want to say nothing because I ain't trying to get another fine," he said.

"I think if you're going to call the game like that, then you've got to be consistent. I think it's been like that all year. If you're going to call a moving back, then you've got to be consistent [on] both ends. Same with the holding."

Team-mate Kyrie Irving remains confident in Simmons' ability to contribute to the Nets' cause but urged him to control his emotions going forward as the season reaches an important stretch towards the playoffs.

"Same thing we've been doing is just give him a ton of confidence," Irving said when asked how the team can help Simmons get going. 

"But also knowing that he's mature enough to handle himself. He's a very talented basketball player, and we could name all the superlatives, but we need him in the game and I think he understands that, especially during this stretch we're going to need him in every game.

"I've gotten ejected before only once in my career. Tempers flare, you disagree with the refs, but the big picture is the most important thing, and on this team, I think Ben realises that. But tonight, just his emotions got the best of him."

The latest defeat leaves the Nets fourth in the Eastern Conference with a 27-17 record.

Jaylen Brown likened the intensity in the Boston Celtics' workmanlike overtime 121-118 victory over the Golden State Warriors to a playoff game.

The Warriors had not returned to TD Garden since winning Game 6 of last season's NBA Finals to secure the championship.

Much like in that series, the Celtics were littered with turnovers (17 in total resulted in 24 points for the visitors) and struggled to fire on all cylinders offensively.

This time, though, Boston found a way to win. Trailing by 11 points in the second half, the Celtics fought back and Brown tied the game via a three-pointer with 18 seconds remaining and then, having gained an eight-point advantage, held on after a sloppy ending to overtime.

"That felt like a playoff game," Brown said.

"Their intensity, their force where they came, that's a game I'm sure they wanted to win. We were down, what, five to seven [points] in the fourth quarter, four, five minutes left. 

"To be able to have poise to battle back, that shows a lot of growth. We're taking steps in the right direction."

Jayson Tatum had a career-high 19 rebounds to go with 34 points and six assists but was also guilty of a couple of poor turnovers.

He too, though, felt the Celtics showed the sort of requisite desire to win when the team is not particularly playing their best basketball.

"You're going to need games like this," Tatum said. 

"There's going to be a handful of playoff games where you don't necessarily shoot the ball well, maybe even on the road – under 40 per cent, 73 per cent from the free-throw line, 17 turnovers – and still find a way to win.

"I think that just shows the depth of our team, that on a below-average night for us, we can still find a way to win. That's all that matters at the end of the night. Did you win or did you lose?"

Interim Celtics coach Joe Mazzulla felt the nature of the victory showed how the team have grown since losing the Finals.

"For us, we've talked about poise and physicality," he said. 

"Everybody asks, what did we learn [from losing in the Finals]? What have we learned? And I think what we've learned is it takes a mindset in order to be successful. And it takes a mindset to be a really, really good team in the NBA. And you can't be inconsistent with that.

"I think even though you play really, really well and we win, we're still going to have some of those moments. Yeah, we had some turnovers, we had some kind of plays where it's just kind of like, 'That shouldn't happen'. But that's going to happen.

"It's about just the habits that we're growing as far as our mindset, our poise, our physicality, our ability to execute, our ability to handle the chaos of an NBA game."

The Celtics sit top of the Eastern Conference with a league-best 34-12 record, while the Warriors are ninth and 22-23 in the West.

World number one Iga Swiatek made an emphatic statement with a 54-minute rout of Spanish qualifier Cristina Bucsa to seal her progression to the Australian Open fourth round on Friday.

Swiatek dropped only six points in a 22-minute first set, before completing a 6-0 6-1 demolition over her 25-year-old opponent at Margaret Court Arena.

The Pole led 6-0 5-0, prompting a crowd member to shout "open the bakery", before Bucsa held her serve to avoid a dreaded double bagel.

Swiatek's victory sets up a fourth-round clash with 2022 Wimbledon champion Elena Rybakina, as the Pole chases her fourth major triumph, including the French Open and US Open crowns last year.

The 21-year-old completely outclassed her opponent, winning 82 per cent of serve points, along with 65 per cent on return, including 71 per cent on Bucsa's second serve. The Spaniard only won 19 of 71 points for the match.

Despite an unconvincing first-serve percentage of 59 per cent, Swiatek never offered up a break point, hitting 15 winners throughout the lopsided contest.

Swiatek has not dropped a set in her three matches at the tournament, giving up only six games in her past two matches.

Data slam: Swiatek demolition falls short of Barty mark

Swiatek's swift victory coincidentally came on the afternoon after Andy Murray and Thanasi Kokkinakis battled until 4am local time in a five-hour-and-50-minute epic in the men's singles.

However, the Pole's 54-minute win was not as brief as last year's champion Ash Barty who disposed of Danka Kovinic 6-0 6-0 in 44 minutes at the 2021 Australian Open.

WINNERS/UNFORCED ERRORS

Swiatek – 15/6
Bucsa – 4/21

ACES/DOUBLE FAULTS

Swiatek – 3/0
Bucsa – 1/3

BREAK POINTS WON

Swiatek – 5/10
Bucsa – 0/0

Seventh seed Coco Gauff cruised safely into the Australian Open fourth round with a straight-sets victory over compatriot Bernarda Pera on Friday.

Gauff, 18, triumphed 6-3 6-2 in one hour and 35 minutes in a competitive contest where Pera, 10 years the teenager's senior, put up a fight with her powerful left-sided forehand a feature in their first-ever meeting.

But Gauff made fewer unforced errors and produced seven aces to help her clinch a fourth-round meeting with 17th seed Jelena Ostapenko.

"Today was a tough match," Gauff said during his on-court post-match interview. "Bernarda hit the ball really hard. I was really just trying to hang in there and take the ground when I could.

"Last season she had a long match streak so I knew she'd be a tough player to beat. But I'm happy to be through to the second week."

The 2022 French Open finalist broke Pera in the fourth game and secured the opening frame inside 48 minutes.

Gauff went two breaks up in the second set, leading 4-1, but Pera offered some resistance with a break back on a double fault from the teenager. But Gauff responded to progress, converting her fourth match point.

Data Slam: Gauff maintains hot start to 2023

Gauff, who knocked off 2021 US Open champion Emma Raducanu in the second round, continued her perfect start to the calendar year, having triumphed at the Auckland Open earlier this month. Gauff won five matches in Auckland, including the final 6-1 6-1 over Rebeka Masarova.

ACES/DOUBLE FAULTS

Pera – 1/7
Gauff – 7/3

WINNERS/UNFORCED ERRORS

Pera – 24/40
Gauff – 23/29

BREAK POINTS WON

Pera – 1/5
Gauff – 4/16

Jayson Tatum grabbed a career-high 19 rebounds during the Boston Celtics' 121-118 overtime victory against the Golden State Warriors on Thursday.

It was a gritty all-round performance from Tatum as he also finished with 34 points, six assists and three steals, imposing his will on the game despite shooting an inefficient nine-of-27 from the field and committing seven turnovers.

Like Tatum, his All-Star team-mate Jaylen Brown also shot just 33 per cent from the field (six-of-18), but veteran center Al Horford picked up the slack, scoring 20 points on eight-of-13 shooting while adding 10 rebounds and three blocks.

As was a theme on the night, Warriors superstar Stephen Curry struggled from the field, shooting nine-of-25 for his 29 points, supplementing his outing with seven assists, four steals, four rebounds and two blocks. Klay Thompson (eight-of-16) and Jordan Poole (10-of-25) chipped in 24 points each.

With the win, the Celtics improved their league-leading record to 34-12, while the Warriors fell under .500 at 22-23, including a horrific 5-17 record on the road.

Russell leads late Timberwolves comeback

Minnesota Timberwolves guard D'Angelo Russell nearly scored as many points as the entire Toronto Raptors team in the fourth quarter of a 128-126 comeback win.

Russell had 16 in the last period – including 14 in a row for the Timberwolves – while the Raptors could only muster 17 points, allowing the home side to claw back from what was a 14-point margin with 10 minutes remaining.

The former All-Star finished with 25 points on eight-of-15 shooting, adding six assists and two steals, while role-player Kyle Anderson continued to flourish in his expanded minutes with 20 points (eight-of-nine), 10 rebounds and six assists.

Suns snap losing run with Nets win

In the battle of two short-handed teams, the Phoenix Suns ended their three-game losing streak in a nail-biting 117-112 victory over the Brooklyn Nets.

The Suns were up by 24 at one point, but Kyrie Irving got hot in the fourth quarter to finish with 30 points, seven rebounds and seven assists, for the Nets who were without Kevin Durant.

Deandre Ayton stepped up for Phoenix, missing Devin Booker and Chris Paul, with 24 points and 14 rebounds, while Mikal Bridges added 28. Cam Johnson added 19 points on his return from injury.

Two-time grand slam runner-up Ons Jabeur says it is "time to recover and get healthier" after her shock second-round elimination from the Australian Open on Thursday.

The Tunisian second seed committed 50 unforced errors as she was bundled out of the opening major of the 2023 season, losing 6-1 5-7 6-1 loss to Marketa Vondrousova.

The defeat comes after the 28-year-old's outstanding 2022 season where she reached the finals of both the Wimbledon Championships and the US Open.

Cameras spotted Jabeur dropping to her knees in apparent despair in the halls of Rod Laver Arena after leaving the court following her loss to Vondrousova.

The Tunisian skipped the mandatory post-match press conference, but opened up on her emotion and condition on Instagram on Friday.

"Despite the health issues, I will keep fighting and come back stronger and stronger," Jabeur posted on Instagram. "Time to recover and get healthier."