Defending champion Novak Djokovic survived a stern test after prevailing 6-3 6-7 (3-7) 7-6 (7-2) 6-3 against Frances Tiafoe en route to the Australian Open third round.

Tiafoe threatened an upset in warm and sunny conditions at Melbourne Park, where world number one Djokovic was pushed to the limit on Wednesday.

But Djokovic dug deep to prevail in a hard-fought battle, keeping his bid alive for a record-extending ninth Australian Open crown and an 18th grand slam title.

Djokovic had only ever lost in the second round of the Australian Open on one previous occasion - in 2017, when he was upstaged by wildcard Denis Istomin in his earliest Melbourne Park exit since the opening round in 2006.

But Djokovic controlled proceedings initially, despite a blip in the first set against Tiafoe, who enjoyed his best run in Melbourne after reaching the Australian Open quarter-finals two years ago.

After racing out to a 4-1 lead, Djokovic was broken to love in the seventh game as Tiafoe reeled off back-to-back games, only to break back immediately - letting out a thunderous roar before closing out the first set in just over half-an-hour.

Not overawed, Tiafoe refused to go away, rallying from love-40 down and saving three break points in a marathon third game lasting almost eight minutes.

It set the tone for a tense second set as Tiafoe - who saw his winner count rise from five in the opening set to 17 - won a tie-breaker.

Djokovic owned a 15-4 record when splitting the opening two sets at the Australian Open, and 68-16 across majors, and he managed to claim an early break that he consolidated for a 3-0 lead to start the third set.

Tiafoe saved two set points when down 5-4 and he continued to frustrate Djokovic en route to another tie-break, but the latter prevailed, albeit unconvincingly.

The fourth set followed a similar theme until Tiafoe came unstuck at 4-3, Djokovic performing when it mattered most as he secured his passage on the back of a double-fault.

Data Slam: Djokovic dazzles from the service line

The Serbian star was always going to be hard to beat behind a strong serving display. Djokovic fired down 26 aces and won 84 per cent of his first serves, having served sat 62 per cent through the contest.

WINNERS/UNFORCED ERRORS
Djokovic – 56/37
Tiafoe – 49/43

ACES/DOUBLE FAULTS
Djokovic – 26/5
Tiafoe – 23/8

BREAK POINTS WON
Djokovic – 5/14
Tiafoe – 2/3

Former Australian Open champion Stan Wawrinka exited in the second round after a marathon loss to Marton Fucsovics.

Wawrinka, the 2014 champion, bowed out after a 7-5 6-1 4-6 2-6 7-6 (11-9) loss to Fucsovics on a warm Wednesday in Melbourne.

Fucsovics saved three match points on John Cain Arena in an encounter that lasted three hours, 59 minutes.

Wawrinka led 6-1 and 8-4 in the super tie-break, but Fucsovics won the final five points and seven of the last eight.

The Hungarian continues to enjoy the year's first grand slam, where he has reached the fourth round twice in the past three years.

Wawrinka, though, has struggled in Australia in recent years.

The Swiss star has now been eliminated in the second round in three of the past four years, while reaching the quarter-finals in 2020.

Wawrinka rallied from two sets to love down and 5-3 behind in the fifth, but wasted his chances in the super tie-break.

Serena Williams is embracing the absence of line judges at this year's Australian Open as the record-chasing American superstar dubbed herself a "futurist, like Iron Man" after reaching the third round. 

The Australian Open is taking place without linespeople as a response to coronavirus restrictions at Melbourne Park, where "Hawk-Eye Live" technology is being used on every court. 

It is the first grand slam to replace all line judges with technology as the tournament seeks to limit the number of people on court amid the COVID-19 pandemic.

After easing past Nina Stojanovic 6-3 6-0 on Wednesday, 23-time grand slam champion and seven-time Australian Open winner Williams welcomed the use of technology.

"I like it," Williams, who is looking to equal Margaret Court's record of 24 slams, told reporters when asked about the technology post-match. "I didn't like it in Cincinnati because they had that in Cincinnati and I was, it was different. It was weird. 

"I like it now because it takes away a lot of the human error, which clearly I definitely don't need. I should be the biggest fan of that. 

"But I feel like sometimes I definitely still want to see that ball, but I'm like, okay, even if I see it, the computer's going to show me what the computer just said. So that's kind of how I think about it. 

"I'm a futurist, like Iron Man, so I definitely love technology and it's something that I invest in and so, yeah, I really think is right up my alley."

Williams owns a 359-51 grand slam record in her illustrious career – the only other player to pass 300 victories in the Open Era is Martina Navratilova (306-49).

The 39-year-old Williams is bidding to win her 11th major crown since turning 30.

Only Court (three), Navratilova (three), Chris Evert (two), Billie Jean King (two), Ann Jones (one), Angelique Kerber (one), Li Na (one), Flavia Pennetta (one) and Virginia Wade (one) have won grand slam silverware in their 30s.

Petra Kvitova made a surprise second-round exit at the Australian Open on Wednesday.

The Czech ninth seed and two-time Wimbledon champion fell to Sorana Cirstea 6-4 1-6 6-1 on a warm day at Melbourne Park.

Runner-up in 2019 and a quarter-finalist last year, Kvitova bowed out after a costly 44 unforced errors in two hours, three minutes.

Cirstea, meanwhile, reached the third round of the Australian Open for just the fourth time.

It marked the Romanian's first win over a top-10 player since 2017, when she beat Karolina Pliskova in Beijing.

Cirstea will face another Czech, 19th seed Marketa Vondrousova, in the third round.

Kvitova is among 10 seeds to have departed in the women's draw, joining Victoria Azarenka, Angelique Kerber, Bianca Andreescu, Petra Martic, Johanna Konta, Maria Sakkari, Wang Qiang, Zhang Shuai and Alison Riske.

Serena Williams booked her spot in the Australian Open third round with a straight-sets win over Nina Stojanovic on Wednesday.

Williams again looked in fine form on her way to a 6-3 6-0 victory over Stojanovic in warm conditions on Rod Laver Arena.

The American star is bidding to equal Margaret Court's record of 24 grand slam singles titles and is on track after her win in one hour, nine minutes.

As her serve gradually improved, Williams – who is dealing with a right shoulder injury – was in control for the most part to set up a third-round clash against Anastasia Potapova.

Stojanovic held her own early, but Williams broke for 3-1, a powerful forehand setting up break point before a backhand error from the Serbian.

Williams was struggling with her first serve – she had a first-serve percentage of just 52 in the first set – but dug herself out of a 15-40 hole to hold for 5-2 on her way to taking the opening set.

A break to begin the second set followed as Stojanovic powered a forehand down the line wide, and three consecutive backhand errors saw her cough up another break to fall 3-0 behind.

Williams took complete control from then on, finishing the second set without an unforced error and losing just nine points to quickly wrap up victory.

Data Slam: Williams' second-round dominance continues
Williams improved her record in the second round of majors to 73-2. It also stands at 19-1 at the Australian Open, where she last failed to reach the third round on her debut main-draw appearance in 1998.

WINNERS/UNFORCED ERRORS
Williams – 27/11
Stojanovic – 15/18

ACES/DOUBLE FAULTS
Williams – 6/1
Stojanovic – 1/4

BREAK POINTS WON
Williams – 4/9
Stojanovic – 0/3

Rafael Nadal sailed into the second round of the Australian Open on day two before backing "humble" fellow Spaniard Carlos Alcaraz to have a "great career" following his maiden grand slam win.

Nadal cruised to a 6-3 6-4 6-1 victory over Laslo Djere on Rod Laver Arena on Tuesday and will face Michael Mmoh in round two.

The Spanish great's compatriot Alcaraz won his first major match at Melbourne Park, seeing off fellow qualifier Botic Van de Zandschulp 6-1 6-4 6-4.

Murcia native Alcaraz has been billed by Nadal's uncle and former coach, Toni Nadal, as his nephew's "natural replacement" and the 20-time grand slam champion says the 17-year-old has all the ingredients to have a great career.

The second seed said: "He's very good. He's very young. He has everything to improve in the future with his age.

"He already is where he is, and he has a lot of great things on his game. I really believe that he will have a great future because he's a good guy, humble, hard worker. He has a lot of positive things."

Daniil Medvedev outclassed Vasek Pospisil 6-2 6-2 6-4, while Stefanos Tsitsipas eased past Gilles Simon 6-1 6-2 6-1, but fellow seed David Goffin lost a five-set marathon with Alexei Popyrin.

Nadal happy to 'survive' 

Nadal missed the ATP Cup before starting his quest for a record 21st grand slam title at Melbourne Park due to muscle tightness in his back.

He was simply happy to clear the first hurdle on the second day of the tournament.

"I needed to survive today and that's what I did. I just tried to be focused all the time, tried to get through," he said.

"For me personally, [I'm] happy to be through to the second round. I did I think a good job today. Straight sets, that's what I did."

Tennys disgruntled over 'joke' of preparation

American Tennys Sandgren was among over 70 players who were locked down in a hotel for a fortnight before the tournament due to positive COVID-19 test on their flight to Australia.

Sandgren made no secret of his displeasure over the restrictions he was forced to adhere to and let his feelings be known again after the two-time quarter-finalist lost 7-5 6-1 6-1 to Alex de Minaur on John Cain Arena.

He said: "How would you imagine prepping for a hot kind of muggy day, three-out-of-five sets against a player like that, that calibre, when you can't play tennis? You can't go outside? You can't. It's impossible. It's impossible.

"So I played last week's event [the Great Ocean Road Open], which probably wasn't a good idea. It wasn't hot, it was very mild conditions, and I played two hard three-set matches and I've never been more sore in my life after the second round, and I took two days off because I couldn't walk, and then I hit a couple times before today. I mean, it's just kind of a joke of preparation. But yeah. What are you going to do?"

Alcaraz escaping social media hype

Big things are expected of teenager Alcaraz and there was more hype over his potential after an impressive first-round win.

Alcaraz just wants to do his own thing and show why the likes of Rafael and Toni Nadal speak so highly of him.

"So I try to be focus on me, not on the social media, to play my game, play in front of my team, to my team, to me, my family," he said.

"I try to, yeah, to be a part of the social media and don't hear the comparison with Rafa. Yeah, I try to do this."

A "calmer" Garbine Muguruza made a fine start at the Australian Open, while defending champion Sofia Kenin was left annoyed despite her victory.

A finalist at the Yarra Valley Classic last week, Muguruza's good form in Melbourne continued with a rampant 6-4 6-0 victory over Margarita Gasparyan in the first round on Tuesday.

Muguruza was runner-up at Melbourne Park last year, with the two-time grand slam winner looking for her first major success since 2017.

The Spanish star, who will face Ludmilla Samsonova in the second round, said she was reaping the benefits of a changed approach.

"I was for sure working very hard, and frustrated that the results weren't there for quite a few months. Sometimes you work hard, you want it so much, that doesn't help you," Muguruza said.

"It's hard to explain, but I felt like for a moment I was working hard, I was putting all the effort out there. The time that I had to go and compete, I wanted it too much. I was getting frustrated too early. At the end I couldn't let the racquet talk.

"I feel like now, after that experience, I managed to stay a little bit calmer and to just go and compete, probably have less expectations. I'm always, like, there and always so pumped. I'm just knowing myself a little bit better now, finding ways to compete and not let that energy and that desire, too much desire, get in the way probably."

It was a relatively good day for the top women's seeds, with Kenin – who conquered Muguruza in last year's final – winning through.

Ash Barty, Elina Svitolina, Karolina Pliskova and Belinda Bencic also advanced, while Victoria Azarenka's poor recent record in Melbourne continued.

KENIN ANNOYED DESPITE WIN

Kenin started her title defence with a 7-5 6-4 victory over Australian Maddison Inglis.

But while the American fourth seed mixed 23 winners with 27 unforced errors, Kenin said she felt her nerves as she defends a major crown for the first time.

"I was obviously quite annoyed the whole match. I felt like the first two points I started off well, then wasn't able to close out the first game. Obviously nerves happen," she said.

"She obviously played really well. She's a tricky opponent, tricky player. Yeah, it was quite hard on myself today, quite annoyed, as you said."

Kenin's next clash is a tough encounter against Kaia Kanepi, who brushed past Anastasija Sevastova 6-3 6-1.

BARTY, SVITOLINA AND PLISKOVA AMONG WINNERS

Barty made a spectacular start with a 6-0 6-0 thrashing of Danka Kovinic.

The world number one won the first 16 points and ended up losing just 10 for the match in an impressive start.

A two-time quarter-finalist at the Australian Open, Svitolina was tested but overcame Marie Bouzkova 6-3 7-6 (7-5) on Rod Laver Arena.

A huge challenge awaits Svitolina, who will next face Coco Gauff after the 16-year-old American beat Jil Teichmann 6-3 6-2.

Czech sixth seed Pliskova made quick work of Jasmine Paolini, wrapping up a 6-0 6-2 victory in just 47 minutes.

Bencic and Anett Kontaveit were among the other seeded winners.

NO EXCUSES FOR AZARENKA

A two-time Australian Open champion, Azarenka suffered a surprise 7-5 6-4 loss to Jessica Pegula in the first round.

The Belarusian's last win at the event came in 2016, having made first-round exits in 2019 and 2021 and missed the tournament in 2017, 2018 and 2020.

Azarenka was among the players forced to quarantine ahead of the major and while she said it played a part in her exit, she offered no excuses.

"Of course, it has impacted. Somebody who's coming out of hard quarantine and maybe has been able to adjust well, they'll go, 'Oh, maybe it hasn't impacted'. Somebody who lost early will say, 'Yeah, of course, it's impacted'. It would be hard to say," she said.

"Was that the best preparation for me? No. But try to sit here and find an excuse because of quarantine and this is just something that, as I said, it is what it is.

"I am disappointed that I wasn't able to perform that I knew I could. That's a bit hard to accept today because I knew I can play better, a lot better. At the same time I feel that I've tried everything I can to be able to be prepared, but unfortunately that hasn't worked out for me."

Greek 20th seed Maria Sakkari also bowed out after a loss to Kristina Mladenovic, while British 13th seed Johanna Konta retired injured while leading Kaja Juvan 6-4 0-2.

Ash Barty made an impressive start to the Australian Open, thrashing Danka Kovinic in the first round on Tuesday.

Barty, who last year became the first Australian woman to reach the semi-finals of the tournament since Wendy Turnbull in 1984, hammered Kovinic 6-0 6-0 on Rod Laver Arena.

Winner of last week's Yarra Valley Classic, Barty won the first 16 points against Kovinic and never looked back.

The world number one wrapped up victory in just 44 minutes, finishing the contest having lost only 10 points.

Kovinic's unforced errors piled up early – the Montenegrin made 14 in the first set – as 2019 French Open champion Barty quickly took control and the opener.

There was a very brief test for Barty to begin the second set, but the Australian was untroubled as Kovinic had no answers.

Barty will meet either Daria Gavrilova or Sara Sorribes Tormo in the second round.

Data Slam: Barty blitz sets up win
Barty made an incredible start, racing into a 4-0 lead without dropping a point. Her hopes of a golden set were ended when she sent a backhand long, but the start put her in immediate control.

WINNERS/UNFORCED ERRORS
Barty – 10/5
Kovinic – 3/28

ACES/DOUBLE FAULTS
Barty – 5/0
Kovinic – 2/2

BREAK POINTS WON
Barty – 6/8
Kovinic – 0/0

Rafael Nadal insisted his back was "not perfect" but he is hoping the injury improves after easing through the Australian Open first round.

Playing his first competitive match since last year's ATP Finals, Nadal cruised past Laslo Djere 6-3 6-4 6-1 on Rod Laver Arena on Tuesday.

As he eyes a record 21st grand slam title, the Spanish star entered the year's first major under an injury cloud.

Despite his comprehensive first-round victory, Nadal, 34, said his back was still troubling him.

"My back is not perfect, as I said a couple of days ago. Every day that I'm able to go through, probably there are more chances to get better. That's the thing now," he told a news conference.

"There is always a chance to improve, and that's why I'm here playing and fighting to try to get better and then give myself a chance. Today it's not great.

"I needed to change a little bit the motion of my serve. That's what I tried to survive that condition today. Tomorrow a day off.  After tomorrow, another match. I need to go day to day and just try to stay positive.

"Of course every day that I am trying to stay here longer is a day with a chance to get better finally, so that's what I am trying. Trying to do all the things possible to be ready for compete, for what I came here."

Nadal won 40 of 48 points on first serve against Djere, while he mixed 19 winners with 24 unforced errors.

The world number two is bidding to become the first man in the Open Era to win every grand slam at least twice as he aims to add to his 2009 Australian Open title.

"I was able to win in straight sets. It's always a positive start for me," Nadal said.

"Always difficult after not playing for a while, playing an official match in a while. A good start. Happy.

Nadal will face either Viktor Troicki or Michael Mmoh in the second round.

Rafael Nadal opened his bid for a record 21st grand slam title with a straight-sets win over Laslo Djere at the Australian Open on Tuesday.

World number two Nadal, level with the absent Roger Federer for the most men's slams in history, defeated Djere 6-3 6-4 6-1 in the opening round in Melbourne.

Nadal needed less than two hours to earn a meeting with either Viktor Troicki or Michael Mmoh as he appeared to dismiss concerns regarding his fitness at Melbourne Park.

All eyes were on Nadal due to a back problem, which left the star unable to compete for Spain in last week's ATP Cup.

But Nadal looked comfortable as Rod Laver Arena was bathed in sunshine, racing out to a commanding 5-1 lead behind a double-break advantage.

Djere – whose racquet went flying out of his hand and into the court as he served in the fourth game – looked overawed, however once he settled, the Serb reeled off seven successive points to unsettle Nadal.

Nadal, though, survived the fightback to close out the first set from a 0-30 deficit, despite his unforced-error count blowing out to 13 – one more than Djere.

Djere showed glimpses as he continued to make things difficult for Nadal, who had only lost twice previously in the first round of a slam – Steve Darcis (2013 Wimbledon) and Fernando Verdasco (2016 Australian Open).

But Nadal had all the answers, reducing his unforced-error count to nine and raising his winners to eight to claim a commanding two-sets-to-love lead.

Nadal boasted an intimidating record when winning the opening two sets of a slam match – 216-1, with his only loss coming to Fabio Fognini at the 2015 US Open – and he never looked back against Djere.

Data Slam: Nadal keeps strong record
Nadal kept a record intact, having never lost an Australian Open match to a player ranked as low as number 56 Djere.

WINNERS/UNFORCED ERRORS
Nadal – 19/24
Djere – 20/36

ACES/DOUBLE FAULTS
Nadal – 5/1
Djere – 4/5

BREAK POINTS WON
Nadal – 6/11
Djere – 1/5

World number one Novak Djokovic is in favour of technology replacing linespeople across the ATP Tour amid the absence of judges at the Australian Open.

This year's Australian Open is being held without line judges as a response to coronavirus restrictions at Melbourne Park, where "Hawk-Eye Live" technology is being used on every court. 

It is the first grand slam to replace all linespeople with technology as the tournament seeks to limit the number of people on court amid the COVID-19 pandemic.

Djokovic was sensationally disqualified in the fourth round of last year's US Open for inadvertently hitting a ball at a line judge during his clash with Pablo Carreno Busta in New York.

Asked about the situation at the Australian Open, defending champion and eight-time winner Djokovic told reporters: "I think back [at the] US Open last year, someone asked me whether I would support the idea of introducing this kind of line call technology at every tournament.

"Obviously providing that the tournament is able to afford financially that kind of investment, because obviously it is an investment.

"I said that I support that, because I feel, yes, I understand that there is a tradition and history and the way we kind of got used to the line umpires being there, and I think it's nice that there is a lot of people and also volunteers with these line umpires that love tennis and love to have an opportunity to be out on the court and be close to the players and be part of a great event.

"But I think when you draw a line that generally I actually am in favour of technology. I think it's proven to be very accurate in this particular instance.  I don't see a reason why we need the line umpires, to be honest, if we have technology like this. I would of course keep the ball kids, but line calls I'm in favour of this technology."

Djokovic was speaking after beginning his quest for a ninth Australian Open title with a 6-3 6-1 6-2 win over Jeremy Chardy on Monday.

The 17-time grand slam champion is trying to close the gap on 20-time major winners Roger Federer - who is absent from this year's event - and Rafael Nadal.

"I respect all of my opponents' records. I think especially Roger and Rafa, what they have achieved over the years. They are legends of our sport, and I admire them a lot," Djokovic said. "They have positively affected my game and my growth, my development and all my success. Wouldn't be what it is if these two guys were not there.

"I have had tremendous rivalries with these two guys and we still keep on going. But I don't want any of their success, if you know what I mean. I'm not jealous of their success or anything like that. I try to build my own authentic career and my own success, and I stick to that."

Djokovic added: "I am always motivated and inspired to achieve big goals and break records. I would lie if I say that's not, you know, something that I'm thinking about or that my attention is not going that way.

"I have been very transparent about the fact that one of the biggest goals is to try to reach the number one of all time weeks' record, and I'm getting closer and closer to that one. That's a kind of a lifetime achievement for me. 

"Grand slams, as well. Of course the Masters events, I think the 1000 events over the years I have managed to be very consistent and win a lot of titles there. Those are the biggest events that we have on the four other than grand slams.  The head-to-head records with top guys as well, to name a few. I try to be a good student of the game. 

"I'm just very fortunate to be in this situation and position that I'm in at the moment, so I try to keep on going and obviously setting up new goals for myself, because I feel like other than passion and love that I have for the game and the biggest reason why I still play it is exactly that pure emotion that I have of enjoyment when I'm there and excitement.

"As a professional tennis player, I need to have goals. Over the last 15 years, everything that I have managed to achieve, I don't settle for anything less but the top of the men's game and the biggest trophies.  That's something I always aim for. I work towards that.  And yeah, I'm still lucky to be where I am. Let's see what the future holds."

Naomi Osaka said she was "really nervous" before facing Anastasia Pavlyuchenkova but showed no signs of that as she breezed into the second round of the Australian Open.

Osaka looked dominant on day one of the first grand slam of the year as she welcomed being able to play in front of a crowd at Melbourne Park, taking only 68 minutes to wrap up a 6-1 6-2 victory.

The US Open champion has beaten Pavlyuchenkova three times in a row after losing when they first met in 2017 but was wary of facing the Russian on Rod Laver Arena.

Third seed Osaka said: "I was really nervous coming into this match. I know that I've played her before, and it was really tough. I just wanted to play well.

"The most recent memory I have of playing her was in the Osaka final [that Osaka won 6-2 6-3 in 2019], so it's always really hard to play someone that good in the first round.

"For me, I feel like it might have also helped in a way because I calmed my nerves because I felt like I couldn't afford to be that nervous. But, yeah, it was a tough match."

Serena Williams and Simona Halep stormed into round two, but the 2016 champion Angelique Kerber crashed out with a 6-0 6-4 defeat to world number 63 Bernarda Pera.

Alison Riske and Wang Qiang were the only other seeds to fall, losing to teenager Anastasia Potapova and qualifier Sara Errani respectively, while Bianca Andreescu made a winning comeback.

Williams sisters among major winners to make serene progress

Serena Williams did not look at all troubled by a shoulder problem as she started her latest quest to win a record-equalling 24th major singles title with a 6-1 6-1 demolition of Laura Siegemund.

Her older sister, Venus, also advanced in straight sets, beating Kirsten Flipkens 7-5 6-2.

Iga Swiatek, the French Open champion, was too good for Arantxa Rus, winning 6-1 6-3, and Petra Kvitova got past Greet Minnen 6-3 6-4.

Kerber will not be claiming a fourth major crown this month after falling to Croatia-born American Pera.

Halep planning to oust another Australian

Two-time major winner Halep was a cut above Lizette Cabrera, winning 6-2 6-1 in 59 minutes, and is looking forward to facing another Australia in the second round in the form of Ajla Tomljanovic. 

"I like to be here, so I like to play Australians," Halep quipped.

"I feel good. My body is fit. It's always difficult to play a big hitter. So, I have to be strong on my legs, focus on myself and give my best.

"I expected a tough match because I played against her before and I know how it's gonna be. She's a good opponent, a good player, and I will focus just on myself like I do every time, but I'm ready for a good battle."

Andreescu back in business

Andreescu put her injury woes behind her, battling past Mihaela Buzarnescu 6-2 4-6 6-3 in her first match for 15 months.

The Canadian had not played in a grand slam since winning the US Open in 2019 but was back in business on John Cain Arena.

Eighth seed Andreescu said: "After the match, I sat down with my team a little bit, and I'm like, 'Oh, guys, here we go again, those three-setters' and they just started laughing because they obviously knew what they were getting themselves into.

"But those matches are super good for me in my opinion because it really shows that I can scramble when I really need to, or if there's some pressure I can dig my way through it somehow. When my back is against the wall, not only today, but I've noticed throughout my last couple tournaments in 2019, I've been able to pull through with those."

Serena Williams will win a 24th grand slam singles title despite the mental pressure of trying to match the record having held her back, Ana Ivanovic says.

American Williams breezed into the second round of the Australian Open on Monday with a 6-1 6-1 victory over Laura Siegemund.

She won her 23rd major singles title in Melbourne in 2017, taking her to within one of matching the all-time record held by Margaret Court.

However, she has failed to win any of the following 14 slams, marking the longest span in her professional career without lifting any of the four biggest trophies.

Williams has won 22 of her majors over the last two decades, at least 15 more than any other women's player in that time, but her most recent four slam finals have ended in defeat.

Ivanovic, the former world number one who reached the final in Melbourne in 2008, wonders if the significance of matching Court's tally may have added extra pressure on Williams.

However, she remains convinced the 39-year-old will claim another title, telling Stats Perform News: "Yeah, definitely after winning so many grand slams, you still have it and especially [as] she reached so many finals, even though she didn't win a title.

"So, I think it's just a matter of, she proved that she can win matches and she can get a part in the grand slams.

"I think she wants to go further for the record. So I think that's maybe a bigger issue than just winning a title. So, it's both a little bit, I guess mental as well. But I'm sure she can do that. And I'm sure that's why she's there and still pushing and still being on top of the game after so many years."

"She's definitely an icon and a very, very powerful player. And I remember you know, when I played against her, she's very intimidating because her serve is just very, very strong. Her shots are very strong. So you feel like you have to attack and move forward otherwise you don't really have a chance. It was very inspiring to play against her and to play against someone who reached so much in women's sport. I think she will go [down] in history. Definitely."

Reigning champion Sofia Kenin begins her Australian Open defence against home hope Maddison Inglis on Tuesday.

The 22-year-old is hoping to become the first women's player to win successive Australian Opens since Victoria Azarenka back in 2013.

Kenin was a finalist at the French Open last year after winning in Melbourne, having failed even to reach the last eight in her first 11 majors, but she was beaten in straight sets by Garbine Muguruza in the quarter-finals of the Yarra Valley Classic warm-up tournament.

"She seemed very, very solid and very consistent lately, so of course she has a big chance but, like I said, it's so difficult to talk because you don't see the players playing, you don't see what kind of form they're on and how the last months have been for them," said Ivanovic.

"And you know, without competition for so long again, it definitely is going to [have an] affect but she can indeed [win]. One Australian Open and then she went on to the French Open final, so she's definitely been very, very consistent and she's going to I think try to go again.

"I think that's why it's very hard to predict who will be the winner of a grand slam, especially on the women's side. But on the other hand, it's nice to see new faces and new players coming up, and it also brings new excitement to the tour."

Ivanovic also tipped French Open champion Iga Swiatek to challenge in the latter stages, adding: "I do like Iga Swiatek and the way she plays. I like her aggressive game. I like the fact that she runs around and hits her forehead, it was kind of the style that I had. So I really hope she can keep up the work that she did last year and continue to do well."

Novak Djokovic began his quest for a ninth Australian Open title with a convincing straight-sets win over Jeremy Chardy.

The reigning champion and world number one looked in ruthless form as he won 6-3 6-1 6-2 in a little over an hour and a half.

Djokovic, who beat Dominic Thiem in a five-set thriller in the 2020 final, was in an authoritative mood as he took the first two sets in just 56 minutes.

Chardy, whose best grand slam result was reaching the quarter-finals in Melbourne in 2013, offered some valiant resistance in game five of the third set before Djokovic eventually claimed the crucial double break.

The 17-time major winner eased through the final two games in front of a jubilant crowd, finishing with back-to-back aces to set up a second-round match with Frances Tiafoe.

"It makes my heart full to see the crowd in a stadium again," said Djokovic, who has reached at least the semi-final stage in seven of his previous nine majors.

"There's an ongoing love affair between me and the Rod Laver Arena. It's definitely one of the most special courts on the tennis tour around the world and my most successful. Every time I step on this court, I relive those memories."

Djokovic's preparations for the tournament were overshadowed by a row over quarantine conditions for players arriving in Australia, the 33-year-old having lobbied Tennis Australia and state authorities to loosen restrictions for 72 players who had to spend two weeks in their hotel rooms.

There was little about his performance on Monday to suggest any distractions from the task at hand, although he bristled a little in the on-court interview when it was put to him he had been "frustrated" in recent weeks.

"I'm just really glad we're free, playing tennis, back in Australia," he then said. "It's a happy place for us, a happy slam."

Data Slam: Djokovic at his clinical best

Djokovic dropped just nine points on serve and hit 41 winners to just 11 unforced errors, sending down nine aces and one double fault.

Such imperious play left Chardy, who had lost all 13 of their previous encounters, with little chance of an upset.

WINNERS/UNFORCED ERRORS
Djokovic – 41/11
Chardy – 20/26

ACES/DOUBLE FAULTS
Djokovic – 9/1
Chardy – 3/3

BREAK POINTS WON
Djokovic – 6/13
Chardy – 0/0