Nick Kyrgios' lawyers will apply for the tennis star's assault charge to be dismissed on mental health grounds, an Australian court was told on Tuesday.

Kyrgios was charged in July of this year in relation to the alleged assault of a former partner in January 2021.

The 27-year-old, who has enjoyed a fine season in 2022, reaching the final of Wimbledon and the last eight at the US Open, was not present for a hearing in Canberra on Tuesday, as he features in the Japan Open.

Michael Kukulies-Smith, who is representing Kyrgios, asked for the case to be adjourned so forensic mental health reports could be prepared.

The case was duly adjourned to February 3, 2023 by magistrate Glenn Theakston. It is then expected Kyrgios' legal representatives will apply to have the case dismissed, with Kukulies-Smith stating he was making the application having reviewed Kyrgios' "medical history since 2015, including public disclosures of his mental health struggles".

Australian law dictates that magistrates have the power to dismiss a charge if they believe an accused person is mentally impaired, and that dealing with a charge in such a manner would be of benefit to both the defendant and the community.

Kyrgios could face two years in prison should he be handed a maximum sentence.

Elena Rybakina advanced to the last 16 at the Ostrava Open on Monday, but fellow former grand slam winner Victoria Azarenka exited at the first hurdle.

Rybakina, who has struggled for consistency since victory at Wimbledon earlier this year, came back from a set down to dispatch Madison Keys with a 5-7 6-3 6-3 win.

She could face eighth seed Jelena Ostapenko in the next round, but one name not in the draw will be Azarenka, who could not claw back victory against Ekaterina Alexandrova in a 6-4 4-6 2-6 defeat.

Alexandrova is in line to play either Emma Raducanu or Daria Kasatkina in the next stage.

Meanwhile, top seeds Iga Swiatek and Paula Badosa earned the identity of their opponents after receiving first-round byes.

Swiatek will play Ajla Tomljanovic, who progressed in straight sets against Zhang Shuai, as Badosa faces Petra Kvitova, who was made to work a little harder in three by Bernarda Pera.

At the Jasmin Open, third, fifth and seventh seeds Alize Cornet, Elise Mertens and Katerina Siniakova each advanced with respective straight-sets routs of Laura Pigossi, Jaqueline Cristian and Chloe Paquet – the latter retiring as she trailed 4-0 in the second set.

But eighth seed Magda Linette is out after letting an early lead slip against Lucrezia Stefanini, who celebrated a 2-6 6-4 6-4 victory.

World number nine Andrey Rublev comfortably beat qualifier Laslo Djere 6-4 6-3 to secure his place in the second round of the Astana Open.

The fifth seed found a crucial break of serve when leading the opener 5-4 to take the first set in Kazakhstan, before winning the next three games to put himself in the ascendancy in the second.

And despite a desperate last stand to stay in the match from Djere, Rublev held serve three times with relative ease to finish off his Serbian opponent.

Eighth seed Felix Auger-Aliassime served 14 aces to Roberto Bautista-Agut's two in their first-round match, but it was the Spaniard who advanced with a 6-4 7-6 (8-6) success.

Meanwhile, world number 10 Hubert Hurkacz overcame Francisco Cerundolo in straight sets.

Adrian Mannarino, the runner-up in Astana in 2020, came from a set down to beat Stan Wawrinka – playing as a wildcard – 1-6 6-2 6-3, and qualifier Zhizhen Zhang romped to victory with a superb third set to seal a 4-6 6-4 6-1 comeback win of his own over Aslan Karatsev.

At the Tokyo Open, fourth seed Frances Tiafoe cruised into the second round with a 6-3 6-4 triumph over Yasutaka Uchiyama, one of three Japanese players who crashed out at the first-round stage of their home tournament.

Uchiyama's countrymen Taro Daniel and Shintaro Mochizuki also tasted defeat at the hands of Bernabe Zapata Miralles and Brandon Nakashima, respectively.

Iga Swiatek warned the tennis schedule is "not safe" and "could cause injury" as she pulled out of the Billie Jean King Cup Finals.

The world number one was due to represent Poland in an event that will be staged in Glasgow from November 8-13, but withdrew on Monday.

That competition will start just a day after the WTA Finals finish in Fort Worth, Texas.

US and French Open champion Swiatek criticised governing bodies the WTA and International Tennis Federation (ITF), who run the Billie Jean King Cup, over the calendar.

"I was thinking it through a lot and discussing it with my team, but I will not be able to play at the Billie Jean King Cup in Glasgow," Swiatek posted in an Instagram story.

"It makes me sad. I'm very sorry, because I play for Poland whenever it's possible and I always give it my best.

"Playing in Poland this year [in the qualifiers] was an honour and I hoped to do this again at the end of the season.

"I'm disappointed that tennis governing bodies didn't come to an agreement on something as basic as the calendar of tournaments, giving us only one day to travel through the globe and changing the time zone.

"The situation is not safe for our health and could cause injury."

Novak Djokovic scooped his 89th career title with victory over Marin Cilic in Sunday's Tel Aviv Open final.

Playing his first singles event since winning Wimbledon in July, Djokovic landed a 6-3 6-4 victory, improving his career head-to-head winning record to 19-2 against former US Open champion Cilic.

He broke serve to lead 3-1 in the opening set, and then struck immediately in the second set to tighten his grip on the contest, completing the task with a service winner on his first championship point.

This indoor hard-court success goes down as a third title of the year for Djokovic, who won the Internazionali d'Italia on clay before triumphing on the Wimbledon grass. He is the first man to win a title on all three surfaces in 2022 at ATP Tour level.

Prevented from playing the North American hard-court stretch of the season, due to his refusal to accept a COVID-19 vaccination, Djokovic sat out the US Open.

He made his first post-Wimbledon appearance at the invitational Laver Cup team event in London last week, which doubled up as Roger Federer's retirement party.

At the age of 35, Djokovic hopes to be a presence on tour for a good while to come, and Sunday's straight-sets picking apart of Cilic was a fresh demonstration of his enduring prowess.

Marc-Andrea Husler beat world number 31 Holger Rune 6-4 7-6 (10-8) to become the Sofia Open champion and earn his first tour-level title.

Rune reached Sunday's decider with a semi-final triumph over top seed Jannik Sinner, who was bidding to win three straight titles in Sofia.

But it was Husler who took the first set, breaking his Danish opponent in the first game of the match before holding in all five of his service games to clinch the opener.

The second set was another tight affair, as both players continued to dominate on their serve. However, the match hit a crucial juncture with Rune leading the second set 6-5, as he spurned two set points to break Husler and level the final up.

Husler survived to take the second set to a tie-break, though Rune again had the opportunity to make it one set apiece as he failed to convert another two set points in the tie-break.

And Husler took advantage with two crucial breaks of Rune's serve to seal the victory and become the first Swiss player to win an ATP Tour title since Roger Federer in 2019.

"I am completely taken aback," Husler said in his on-court interview.

"I am lost for words. It was a great match. I played a great, great match for sure. I just tried to stay focused, stayed calm and I am just really happy I was able to make it."

Barbora Krejcikova claimed her first title of the year by beating top seed Anett Kontaveit in the inaugural Tallinn Open final on Sunday.

Krejcikova had not won a singles title since her third triumph of 2021 in Prague last July, but ended her drought with a 6-2 6-3 defeat of the top seed.

The Czech ended the home favourite's hopes of being crowned champion in a showpiece match that was over in an hour and 21 minutes.

Kontaveit had won 24 consecutive indoor matches on hard courts, but she was no match for the 2021 French Open champion.

Krejcikova won 71 per cent of points on Kontaveit's second serve, breaking twice in the opening set and three times in the second.

She drew first blood to go 4-2 in the first following precise groundstrokes off both wings, then broke for a second time to seal an opening set in which Kontaveit made 13 unforced errors.

World number four Kontaveit responded with a break in the opening game of the second set, but failed to back that up with a hold.

Kontaveit had the initiative again at 3-1, but there was a sense of deja vu as her opponent broke straight back and served out the match after moving 5-3 in front with another break.

Yoshihito Nishioka produced an impressive display to shock Denis Shapovalov in the Korea Open final and win his first ATP Tour title in four years.

The Japanese player earned a 6-4 7-6 (7-5) triumph in a competitive contest against fourth seed Shapovalov on Sunday that lasted just under two hours.

Victory gave Nishioka his first trophy since the Shenzhen Open in 2018 and capped a memorable week that also saw him defeat top seed Casper Ruud at the ATP 250 event in Seoul.

Nishioka took a big step towards the second title of his career by breaking Shapovalov at a crucial moment when he was 5-4 up in the opener, both players having earlier saved break points.

His Canadian opponent was in the ascendancy after claiming an early break in the second set but Nishioka fought back from 3-1 down to force a tie-break and then won four of the first five points in the breaker.

Despite Shapovalov reducing the deficit, he was consigned to defeat when he sent a forehand wide, Nishioka dropping to his knees in delight after converting his second match point.

Shapovalov, a Wimbledon semi-finalist last year, has now lost in four consecutive ATP final appearances and still has just one career title to his name.

Novak Djokovic is yet to drop a set at the Tel Aviv Open as he reached the final with a 6-1 7-6 (7-3) success over Roman Safiullin.

The Serb broke his Russian opponent twice as he cruised to the opening set, and though Safiullin took the 21-time grand slam champion to a tie-break in the second, Djokovic's class showed as he won the tie-break 7-3 to ensure his place in Sunday's decider.

It was far from plain sailing for Djokovic, who conceded the tension in the second set was hard to handle.

Djokovic said: "I think it was a very competitive match, especially in the second set.

"I must say I was quite emotional on the court today in the second set, there was a lot of tension, and that was also due to his aggressive style of tennis. Big serves, and when he has time, he's so solid from the forehand and backhand corner.

"I knew that I had to stay very strong, and that he was definitely going to raise his level in the second set, which happened. I was serving for the match and played a couple of loose points, but credit to him for fighting back. It was an enjoyable evening on the court for sure."

Marin Cilic secured his spot as Djokovic's final opponent with a comfortable straight sets triumph over Constant Lestienne.

The Croatian second seed served 14 aces as he eased to victory in under two hours, winning 11 out of his 12 first-serve points en route to a 7-5 6-3 win.

Holger Rune is into the Sofia Open final after Jannik Sinner was forced to retire through injury with the Dane leading 5-7 6-4 5-2.

Sinner won the opening set but lost the second, and with Rune just one game away from winning the match, the top seed chose to retire with ankle pain, putting an end to his hopes of winning three straight titles in Sofia.

Rune will face Marc-Andrea Huesler in the final, after the world number 95 upset fourth seed Lorenzo Musetti.

The first set went to a tie-break as neither could find a break of serve, though Musetti found two in the tie-break to help him to a 5-1 lead.

However, the Italian surrendered the next six points as Huesler pulled off an incredible comeback to take the first set.

The second set was another tight affair as both held serve after serve, but Huesler finally found a crucial break to prevail 7-6 (7-5) 7-5.

Mayar Sherif became the first Egyptian to win a title on the WTA Tour as she toppled Maria Sakkari in Saturday's Parma Ladies Open final.

The 26-year-old from Cairo scored a 7-5 6-3 victory over Greece's world number seven after both won their semi-finals earlier in the day.

Sakkari began the day by beating Danka Kovinic 7-5 6-2, while Sherif earned her place in the title match by battling to a 6-4 3-6 6-4 victory against Ana Bogdan.

The final surprisingly went the way of Sherif, who first entered the WTA top 100 in August of last year and has reached a high of 44th in the rankings.

She began this week at number 74 but will climb again after the biggest success of her career.

"It means a lot for my country," Sherif said. "I'm just thrilled and happy. This was never expected."

Sherif, who studied sports medicine at Pepperdine University in Malibu, California, was understandably weary after her two wins on Saturday. Friday's play had been cancelled due to rain, forcing the players to take to the courts twice on finals day.

"I'm exhausted," Sherif said, quoted on the WTA website. "Today was a very tough day for me, many hours on court. I'm very happy that I pulled it off. I had to dig very deep."

At the Tallinn Open, Sunday's final will be a tantalising tussle between Anett Kontaveit and Barbora Krejcikova.

World number four Kontaveit was a 6-4 6-4 winner against fellow Estonian Kaia Kanepi in their semi-final.

Czech Krejcikova, who won last year's French Open, saw off Swiss second seed Belinda Bencic 6-7 (5-7) 7-6 (7-2) 6-2.

Yoshihito Nishioka followed up a claiming a series of scalps by avoiding a shock of his own as he defeated ATP Tour main-draw debutant Aleksandar Kovacevic to reach the Korea Open final.

Nishioka, who will return to the ATP's top 50, eliminated fifth seed Dan Evans in the first round and later top seed Casper Ruud in the quarter-finals.

Meanwhile, Kovacevic made his main-draw bow on Monday, beating seventh seed Miomir Kecmanovic, and continued a sensational run all the way to the last four.

The American threatened another upset on Saturday, but Nishioka held his nerve to advance 6-3 4-6 6-3 in Seoul.

And now the Japanese will revert to the role of underdog on Sunday, with fourth seed Denis Shapovalov his opponent in the championship match.

Nishioka has only one ATP Tour title to his name, and he will have his work cut out if he is to add to that against Shapovalov, who is yet to drop a set this week.

The Canadian continued that sequence with a 7-5 6-4 success against Jenson Brooksby in the first semi-final.

Anett Kontaveit secured a spot in the semi-finals of the Tallinn Open after overcoming Ysaline Bonaventure 6-3 3-6 6-3.

On home soil, the top seed won 80 per cent of total service points in the opening set but Bonaventure fought back in the second to send the match to a deciding set.

A valiant effort from Kontaveit in the third set secured a spot in the final four, where she will face compatriot Kaia Kanepi after her 6-2 3-6 7-6 (8-6) victory over Karolina Muchova in the final match of the day.

Earlier on Friday, second seed Belinda Bencic defeated Donna Vekic to set up a semi-final clash against Barbora Krejcikova, who defeated Beatriz Haddad Maia in straight sets.

At the Parma Ladies Open, the scheduled semi-finals were postponed due to rain and will instead be played on Saturday, with the final to follow later in the day.

Top seed Maria Sakkari faces Danka Kovinic, with play to begin at 10:30 local time, and will be followed by Ana Bogdan against Mayar Sherif.

Novak Djokovic sealed his place in the final four at the Tel Aviv Open after beating one of his "best friends" Vasek Pospisil on Friday.

The Serbian was made to work hard by his Canadian opponent, particularly in the first set, but eventually won 7-6 (7-5) 6-3.

Djokovic was particularly impressive on his second serve, winning 70 per cent of them, only four per cent less than his first serve success rate, and he hit just eight unforced errors compared to Pospisil's 21.

"It was a great, positive win," Djokovic said afterwards. "Vasek is one of my best friends on the Tour. We have known each other for many years. It is never easy playing someone you respect so much and like so much, but we are both professionals and wanted to win the match and you can see that.

"I think the level of tennis was really high. Especially towards the end of the first set and the second set. Credit to him for fighting. It's great to see him back."

The number one seed will play Roman Safiullin in the semi-finals after the Russian beat Arthur Rinderknech 6-4 6-1.

Constant Lestienne came through a tight contest with Maxime Cressy, winning 6-7 (4-7) 6-3 7-6 (7-3), and will face number two seed Marin Cilic in the other semi after the Croatian was handed a bye following Liam Broady's withdrawal prior to their match.

At the Sofia Open, Jannik Sinner remains on course for a third successive title at the tournament, setting up a final-four encounter with Holger Rune after easing past Aleksandar Vukic 6-2 6-3, with Rune eventually dispatching Ilya Ivashka 6-2 5-7 6-4.

The other semi-final in Bulgaria will see Lorenzo Musetti take on Marc-Andrea Huesler after both won their respective quarter-finals against Jan-Lennard Struff and Kamil Majchrzak.

Casper Ruud stumbled to defeat against Japan's Yoshihito Nishioka as the French Open and US Open runner-up bowed out in the Korea Open quarter-finals.

World number two Ruud lost 6-2 3-6 6-2 in Seoul on Friday as the Norwegian found the going too tough in his first tournament in Asia for three years.

Ranked 56th before this week, Nishioka is one win away from vaulting back into the top 50, potentially going beyond his highest ranking of 48th if he reaches the final.

He said, quoted on the ATP website: "I feel great. My motivation is very high. I am playing very well, very smart."

Assessing top seed Ruud, Nishioka said: "I know he came from Europe and played at the Laver Cup, which is not easy matches. He wasn't settled on this court or this country yet, maybe. I was ready. I was focused on playing against him and I had a plan and it worked."

Nishioka had an outstanding run to the Washington final in August, before losing out to Nick Kyrgios in the title match. That was a major outlier in his season, which has consisted largely of early-round defeats.

His semi-final opponent will be American Aleksandar Kovacevic, a 24-year-old world number 222 who is enjoying the biggest week of his career. A 'lucky loser', handed his place in the draw when a spot opened up, Kovacevic has taken full advantage and beat compatriot Mackenzie McDonald 4-6 6-3 6-2 in their last-eight battle.

Canadian Denis Shapovalov, still seeking a first final appearance of the year, moved one step away by beating Moldova's Radu Albot 6-2 6-2, setting up a clash with American Jenson Brooksby, who was handed a bye due to Cameron Norrie pulling out with illness.

Novak Djokovic cruised past Pablo Andujar to reach the quarter-finals of the Tel Aviv Open on Thursday, showing no signs of rustiness on his first Tour-level outing since July.

Djokovic had not featured in an ATP-level match since his final victory over Nick Kyrgios at Wimbledon, having been forced to miss the US Open due to his COVID-19 vaccination status.

But the Serbian needed little time to find his feet in Israel, winning the first seven games of the match and breaking the Spaniard's serve four times en route to a 6-0 6-3 victory.

Speaking on court afterwards, Djokovic said: "Fantastic atmosphere here tonight, thank you very much. I like the court, it's very intimate and it's very loud. 

"The crowd here is very passionate about the sport, about tennis and I'm really, really happy to be here and to perform here in front of you, so thank you for your support."

The 21-time grand slam winner will face Canada's Vasek Pospisil in the last eight after he beat home hopeful Edan Leshem 6-3 6-2.

Two of Djokovic's fellow seeds fared less well, however, with Diego Schwartzman and Botic van de Zandschulp both being ousted after three-set contests.

Third seed Schwartzman failed to capitalise on a third-set match point in his 6-3 2-6 7-6 (9-7) loss to Arthur Rinderknech, while Britain's Liam Broady teed up a clash with Marin Cilic by beating Van de Zandschulp 6-4 4-6 6-3.

The Sofia Open also saw a couple of seeds fall to surprise defeats on Thursday, although Jannik Sinner avoided any drama in his 6-3 6-4 win over Nuno Borges.

Sinner now has a perfect 10-0 record at the event, which he won in both 2020 and 2021, and will face Australia's Aleksandar Vukic for a place in the final four.

Holger Rune also progressed to the last eight, though he was forced to rally after losing the opener against Lorenzo Sonego, but Pablo Carreno Busta and Oscar Otte were both dumped out.

Second seed Carreno Busta fell to a 6-3 3-6 6-2 reverse against Switzerland's Marc-Andrea Huesler, who will face Poland's Kamil Majchrzak in the quarter-finals after he came back to beat Otte 4-6 6-2 6-4.