Sofia Kenin crashed out of the Madrid Open in the first round on Tuesday, losing in just 58 minutes to Maryna Zavenska.

The 2020 Australian Open champion and former world number four has showed some flashes of her old form in 2023, having seen her career derailed by injuries since her triumph in Melbourne.

She reached the third round at the Miami Open in March, but was outclassed on the clay by her Belgian opponent, who raced to a 6-0 6-3 win.

Kenin's American compatriot Katie Volynets suffered defeat to Czech teenager Linda Fruhvirtova while Lauren Davis was beaten in three sets by Sorana Cirstea and Claire Liu lost in straight sets to Yulia Putintseva.

Karolina Muchova overcame former world number two Anett Kontaveit 6-2 6-2 but her Czech compatriot Babora Strycova lost to Elisabetta Cocciaretto.

Elsewhere in the draw, world number 79 Rebecca Marino claimed a surprise straight-sets win over world number 39 Zhu Lin.

Iga Swiatek is delighted by the consistency levels she is demonstrating after completing a successful defence of her Porsche Tennis Grand Prix title on Sunday.

The world number one overcame Australian Open champion Aryna Sabalenka 6-3 6-4 to become the first back-to-back winner of the Stuttgart crown since Angelique Kerber (2015 and 2016).

Swiatek, who was appearing in her first tournament after a rib injury, claimed her second silverware of the season, in which she also completed a successful title defence in Doha.

The Pole has plenty of ranking points to defend this term having won eight titles during a dominant 2022 campaign.

Swiatek was also a finalist in Dubai and, despite a fourth-round exit at the Australian Open, she is pleasantly surprised to have started 2023 in a similar vein of form.

"Honestly, the beginning of the season was so tough that I'm happy to be in that place now," Swiatek said during her post-match press conference.

"I just hope I'm going to continue having that good mindset without looking at all this stuff [defending points]. I was able to do that here. I really like playing on clay, so I just hope I'm going focus on just playing.

"I'm just pretty proud of my consistency, because when I was consistent on another level, it was nice, but this level, it's even over my expectations.

"Last year was really, really tough, and I felt like this season may be tough because of what people are saying and expectations from the outside. Also, I knew how it is to win these tournaments in a row. 

"Now, I feel like I just can use my experience a little bit more. I'm just happy that I'm world number one for more than a year, and it's an exciting time."

Iga Swiatek scooped her 13th career title with a statement victory against Aryna Sabalenka in Sunday's Stuttgart Open final.

The world number one has seen her dominance take a dip this season, with Sabalenka and Elena Rybakina emerging as serious candidates to displace her at the top of the women's game.

However, Swiatek is the queen on clay and illustrated her prowess with a 6-3 6-4 win at the tournament that rewards its champion not only with a cheque for $120,150 and trophy, but also a Porsche.

This success made Swiatek the first player to defend the Stuttgart title since Angelique Kerber's back-to-back 2015 and 2016 triumphs, and it came in her first tournament back after a rib injury.

The 21-year-old Polish player entered the title match having said she and Ons Jabeur are the tour's best players on clay, and that put her there to be shot at by Australian Open winner Sabalenka, who has climbed to second place in the rankings.

This was the first time a tour-level final has featured the top two women in the world rankings since the 2018 Australian Open final, when Simona Halep beat Caroline Wozniacki.

It was also a repeat of last year's Stuttgart final that Swiatek won comprehensively, dropping only four games, amid a 37-match winning run that would bring her a second French Open title.

The traffic was not quite so one-way this time, but Swiatek was terrific and did not drop serve once.

For Sabalenka, the outcome meant a third consecutive defeat in Stuttgart title matches, having also lost in the 2021 showpiece to Ash Barty.

After Swiatek surged through the opener, she forced a break point at the start of the second set and a Sabalenka double fault handed over the advantage.

Unforced errors were costing the Belarusian, who could not capitalise on a break point in the fourth game of the second set, going on to fling a desperate forehand wide to hand over a 3-1 lead.

Swiatek took evasive action to avoid a fierce Sabalenka smash in the next game, after initially charging towards the net, but she remained firmly in charge.

The title was secured with a ruthless love game on serve, an outmanoeuvred Sabalenka left to watch her opponent drill away a backhand into an empty court.

Reflecting on her injury lay-off, Swiatek said: "It's been such an intense time in the last couple of weeks and tough decisions sometimes, but I'm so happy we're making the right decisions."

Sabalenka, who during the week made no secret of her eagerness to win the Porsche, said: "I'll keep coming back until I get the car."

Defending champion Iga Swiatek will face Aryna Sabalenka in the Stuttgart Open final after Ons Jabeur was forced to retire from their semi-final with a left calf injury.

World number one Swiatek was 3-0 up against Jabeur when her tearful opponent called a medical timeout and ultimately ended the contest early.

It sets up a mouthwatering showdown between top seed Swiatek and second seed Sabalenka, who defeated Anastasia Potapova in straight sets earlier on Saturday.

Jabeur, who struggled to shake off the injury sustained in the first game, said: "The third point, I don't know what happened.

"I was really excited to play Iga today – it's always a fun match between us. I wish her the best luck for the final. I'm sorry guys, I really tried to run, but Iga never makes it easy."

Sabalenka, a beaten finalist in the past two years, held her serve in the opening set against Potapova and twice broke her unseeded opponent to take the lead.

The Belarusian raced 4-0 ahead in the second set and saw out a comfortable 6-1 6-2 victory in a little under an hour to reach her fourth final of the year.

"I think I was really focused, and I think from the very first point I was playing really aggressive," Sabalenka said in her on-court interview. "I didn't give [Potapova] much time. 

"I think that's why the match finished like that quick. But anyway, she's a great player, and I think in the future she's going to be a top player."

Swiatek defeated Sabalenka in last year's Stuttgart final 6-2 6-2 and is aiming to become the first player to defend the title since Angelique Kerber in 2016.

It was a day for comebacks at the Stuttgart Open, with number one seed Iga Swiatek recovering from a set down to beat Karolina Pliskova in the quarter-finals.

Swiatek made a disastrous start, going 4-0 down, and though she broke back once, was unable to find the second as Pliskova took the opening frame 6-4.

The determined Pole stepped up a level though to take the second 6-1, before breaking early in the third.

It was still an improvement for the Czech player, who lost 6-0 6-0 to Swiatek in their only previous meeting in Rome in 2021.

Pliskova kept her opponent honest on her own serve, but Swiatek had too much for the world number 17 as she clinched the decider 6-2.

Aryna Sabalenka also showcased her powers of recovery as she beat Paula Badosa despite going a set down.

The second seed won 4-6 6-4 6-4 in an even contest that saw nine breaks of serve, before the Belarusian eventually got over the line.

Sabalenka is now the player with the joint-most comeback wins over the last two seasons (13) level with Caroline Garcia, though the French star was actually the victim of a comeback herself on Friday.

Garcia won the first set against Anastasia Potapova, before the Russian came back to take it 4-6 6-3 6-3 to set up a semi against Sabalenka.

There was no need for such drama from Ons Jabeur, who eased to a 6-3 6-0 victory against Beatriz Haddad Maia in just 68 minutes to confirm a clash with Swiatek.

Iga Swiatek believes it is "pretty confusing" to see the International Olympic Committee backing sports stars from Russia and Belarus to return to top-level sport while the invasion of Ukraine continues.

Since Russia launched its assault in February 2022, supported by Belarus, many sports have banned athletes from the two countries outright, while tennis has been among those that has largely allowed them to compete but under a neutral flag.

Swiatek, the women's tennis world number one, hails from Poland and has been a vociferous critic of the war and a fervent supporter of Ukraine.

Interim recommendations were issued by the IOC last month to international federations and organisers of events regarding the involvement of Russians and Belarusians.

The Olympic body urged federations to exclude any athletes or support personnel "who actively support the war" and said teams from either country should not be allowed to compete in international sport for now.

However, in a statement, the IOC said it should be "the sole responsibility" of sporting bodies to decide whether individuals can compete, and this should be "based on their sporting merits and not on political grounds or because of their passports".

There is a clear possibility of Russian and Belarusian athletes being allowed to compete as neutrals at the Paris 2024 Olympics, although IOC president Thomas Bach stressed there has been no decision taken on that matter.

Swiatek was asked about the IOC stance after her opening match at the Stuttgart Open, and the 21-year-old said: "Human rights are important, but I always feel like there are values that you have to kind of treat respectfully, and war is not something that we want in the world. I was pretty open about that since the beginning.

"Right now the situation is pretty complicated, because at the beginning of the war there weren't many decisions one way. At first they were kind of banned in other sports, not in tennis.

"Then it changed a little bit, and they are starting to be allowed, the Russian and Belarusian players, which is pretty confusing, because I feel like nothing changed in Ukraine and the cities are still under attack and many Ukrainian athletes are fighting in the war and actually losing their lives.

"It's heartbreaking. I just hope, no matter what the decision is going to be, the sport will be able to kind of put people together and not separate them.

"But there are tensions, so it may be tricky and hard to do. As just one athlete, I don't have full influence on what's going on, so we kind of have to just compete our best no matter what the circumstances are."

Iga Swiatek is through to the quarter-finals of the Stuttgart Open after easing to a 6-1 6-4 win over Zheng Qinwen on her return from a rib injury.

Swiatek had not played since sustaining the issue in the semi-finals of Indian Wells over a month ago, but advanced on Thursday despite stating that she felt "rusty".

The world number one won 84 per cent of points after landing her first serve in as she made up for lost time.

Swiatek also forced eight break points, winning four of them as she took just and hour and 26 minutes to set up a quarter-final with Karolina Pliskova, who bested Donna Vekic in a thriller.

Pliskova looked to be on her way to a routine win as she claimed the first set 6-2, only for the Croatian to take the second via a tie-break.

The decider also went the distance, with Pliskova able to finally put Vekic away 6-2 6-7 (5-7) 7-6 (7-5) to book her clash with Swiatek.

Coco Gauff perhaps paid the price for taking almost three hours to beat Veronika Kudermetova on Wednesday, as the fifth seed fell to a straight-sets loss to Anastasia Potapova on Thursday, going down 6-2 6-3.

Fourth seed Caroline Garcia will go up against Potapova next after she defeated Tatjana Maria 7-6 (7-5) 6-4, while Paula Badosa had few problems seeing off fellow Spaniard Cristina Bucsa 6-1 6-2 and will face second seed Aryna Sabalenka in the last eight.

Paula Badosa believes she can break back into the world's top three after cruising past Daria Kasatkina at the Porsche Tennis Grand Prix, where Emma Raducanu crashed out on Tuesday.

Seventh seed Kasatkina had no answers in Stuttgart as she fell to a 6-1 6-1 defeat against Badosa, who recorded the ninth top-10 victory of her career and first in exactly 12 months.

Badosa has won 29 clay-court matches in the last three seasons – only Ons Jabeur (35) and Iga Swiatek (30) have won more – but the Spaniard had to enter this tournament as a wildcard.

The 25-year-old was as high as second in the world last year but has fallen to 31st, and she outlined her goal to reach the top once more after her first-round win set up an all-Spanish meeting with Cristina Bucsa.

When asked about her ambitions to return to the world's top three, Badosa said: "That's what I'm working on every day. That's one of my goals – I want to be back on the top.

"I like to play big matches, I like to be in the last rounds of the tournaments. I still know I have that level. I still know I was that player. I still believe in myself, and I hope I'm back there very soon."

Jelena Ostapenko eased into the second round with similar dominance after downing Raducanu 6-2 6-1 in just 58 minutes, teeing up a meeting with world number four Ons Jabeur on Wednesday.

Latvian Ostapenko powered 19 forehand winners and went unbroken, acknowledging in her on-court interview that familiar aggression was key to her success in the battle of two one-time grand slam winners.

"I knew against her the main thing was to step in the court," said former French Open winner Ostapenko. "I missed some balls, but I tried to be aggressive all the time when it was possible.

"Just try to take the ball early, don't give her many chances. And finally, I'm back on clay, my favourite surface."

Barbora Krejcikova was another straight-sets winner, scoring a 6-2 6-0 triumph over Liudmila Samsonova, with the reward for the 2021 Roland Garros champion being a tricky clash against second seed and Australian Open winner Aryna Sabalenka.

There was no such ease for Anastasia Potapova in a battling 6-3 3-6 7-6 (7-4) victory over Petra Martic, the Russian's ninth third-set win in 2023 – no WTA Tour player has managed more.

Tatjana Maria overcame Ylena In-Albon 6-2 4-6 7-6 (7-4) in another enticing clash, while Beatriz Haddad Maia advanced after Martina Trevisan was forced to retire when trailing 7-5 1-1 due to a right thigh injury.

Iga Swiatek will open the defence of her Stuttgart Open title against Qinwen Zheng after the world number 25's 6-4 6-4 win over Alycia Parks on Monday.

Lucky loser Parks hit eight aces but also 11 double-faults and was undone once in each set as Zheng took a straight-sets victory to tee up a second-round clash with the world number one.

Cristina Bucsa came up with a third-set bagel to join Zheng in round two, having initially made hard work of fellow qualifier Tamara Korpatsch in her 3-6 6-4 6-0 win.

Bucsa will meet the winner of the clash between seventh seed Daria Kasatkina and last year's semi-finalist Paula Badosa.

Meanwhile, Donna Vekic will take on either Karolina Pliskova or Maria Sakkari after she battled to a 7-6 (9-7) 7-6 (7-5) triumph over Ekaterina Alexandrova.

The star-studded line-up sees grand slam winners including Emma Raducanu, Barbora Krejcikova and Jelena Ostapenko get their campaigns underway on Tuesday.

Ons Jabeur, who claimed victory at the Charleston Open earlier this month, kicks off her tournament on Wednesday.

WTA tournaments will return to China later this year after being suspended since late 2021 due to concerns around the safety of player Peng Shuai.

Peng posted claims on Chinese social media site Weibo in November 2021 that she had been sexually assaulted by the former Chinese vice-premier, Zhang Gaoli, before disappearing from public view and later denying making the allegations in a video interview posted by a Singaporean Chinese-language newspaper.

The situation led to widespread concern for Peng's wellbeing, initiating the #WhereIsPengShuai campaign, with the WTA going as far as suspending Chinese tennis tournaments.

The organisation called on the Chinese authorities to investigate the matter, but has now accepted that those requests "will not be met".

"We've been in this for 16 months and we are convinced that at this point our requests will not be met," chief executive Steve Simon said to BBC Sport.

"To continue with the same strategy doesn't make sense and a different approach is needed. Hopefully, by returning, more progress can be made."

He added: "We've achieved some assurances from people that are close to Peng that she's safe and living with her family in Beijing.

"We do also have some assurances that there won't be any issues with our players and staff while they are competing in China. And hopefully we have received some respect for the stance we took.

"We haven't seen anyone else take a stance such as we did. There hasn't been any other sporting leagues or any business that have. We took that strong stance, we stand behind it."

The final two months of the season will be "very similar" to the pre-pandemic year of 2019, according to Simon, when eight tournaments were played in China from the start of September.

The 10-year deal for the season-ending WTA Finals to be held in Shenzhen will also resume.

World number five Ons Jabeur secured her first title of the season on Sunday with a 7-6 (8-6) 6-4 victory over Belinda Bencic in the Charleston Open final.

Jabeur, 28, enjoyed the best campaign of her career in 2022 as she reached the finals of Wimbledon and the US Open, but she was sidelined due to knee trouble following this year's Australian Open.

The Tunisian returned with early exits at both the Indian Wells Open and Miami Open, meaning she came into Charleston without consecutive wins since early January.

But she looked right back to her best at the WTA 500 event, not dropping a set the entire tournament.

After beating Lesia Tsurenko, Caroline Dolehide, Anna Kalinskaya and Daria Kasatkina to reach the final, Jabeur had to respond to early adversity against Bencic as the Swiss secured a break in the opening game of the first set.

Down 5-4 in the opener, Jabeur broke back at the last opportunity to keep the set alive, and after falling 6-4 behind in the tie-break she rattled off the next four points in a row to steal it.

The second set was all about making the most of her chances, as Jabeur only had three break-point chances compared to Bencic's five, but she was able to convert all three while Bencic could only snag two.

The final was a rematch from last year's Charleston Open title match, where Bencic prevailed over Jabeur in three sets, and it is Jabeur's first title since the German Open in June, where she again had to overcome Bencic in the final.

Jabeur now leads their head-to-head 3-2 in matches played at WTA Tour level.

Second seed Ons Jabeur secured a berth in a second successive Charleston Open final after triumphing 7-5 7-5 in a tight battle with third seed Daria Kasatkina.

Jabeur trailed a break in both sets but won in 109 minutes, aided by a three-hour rain delay at 5-3 down in the first frame allowing her to re-group.

The Tunisian had been a double break down at 4-1 in the first set, with Jabeur breaking Kasatkina when she served for the set at 5-2.

Jabeur's progress means she has reached her 11th WTA level final, this marking her first since the 2022 US Open which she lost to Iga Swiatek.

Jabeur lost last year's Charleston final to Belinda Bencic and the two may face off again in this year's decider, with the Swiss fourth seed leading top seed Jessica Pegula 7-5 6-6 (2-4) before rain forced their semi-final to be postponed until Sunday.

Bencic looked to have blown a 5-2 first-set lead, failing to serve out the opening frame before Pegula squared it up. But Bencic held serve, then broke Pegula to love to claim the lead.

There were breaks in the opening two games of the second set before it went to serve, until rain intervened with Pegula having a slight advantage in the tiebreaker.

Play will resume on Sunday not before 1:30pm local time, with the final scheduled for Sunday evening.

Second seed Tatjana Maria advanced to her second straight Copa Colsanitas final in Bogota, winning 6-3 6-4 over Briton Francesca Jones.

Maria will face either Peyton Stearns or Kamilla Rakhimova in Sunday's final.

The stage is set for a star-studded final weekend at the Charleston Open as top four seeds Jessica Pegula, Ons Jabeur, Daria Kasatkina and Belinda Bencic all advanced to the semi-finals on Friday.

It is the first time since the 2012 Stuttgart Open that all four top seeds reached the final four in a WTA 500 event.

Pegula, the top overall seed and the only remaining American, used her commanding serving game to overwhelm 12th seed Paula Badosa 6-3 7-6 (8-6).

She ended up winning 80 per cent of her accurate first serves – compared to 57 per cent for Badosa – and it resulted in the Spaniard producing just one break point opportunity in the match, which she could not take.

Pegula will meet fourth seed and Olympic gold medallist Belinda Bencic next after her relatively comfortable 6-3 6-3 triumph against Russia's Ekaterina Alexandrova.

Switzerland's Bencic needed just 80 minutes to get the job done, creating 12 break point chances compared to Alexandrova's two, while winning the first three games of each set.

After coming into the tournament without consecutive wins since early January, reigning Wimbledon and US Open finalist Ons Jabeur looked back to her best in a dominant 6-0 4-1 (retired) drubbing of Anna Kalinskaya.

Jabeur is yet to lose a set in Charleston, and she will try to keep that the case when she faces Daria Kasatkina in her semi-final.

Kasatkina earned her spot in the final four with Friday's only three-setter, emerging victorious 6-7 (5-7) 6-4 6-2 against Madison Keys in just over two and a half hours.

World number three Jessica Pegula was pushed all the way before emerging victorious 7-5 4-6 6-4 against Irina-Camelia Begu in Thursday's Charleston Open third round.

Pegula, the top-ranked American and the tournament's overall top seed, may have thought it was going to be smooth sailing after collecting a break-to-love in the match's opening game, but it was just the beginning of a two-hour-and-32-minute battle.

Begu played terrific tennis against a world-class opponent, winning 47 per cent of the match's total points, but she shot herself in the foot with eight double faults while Pegula had just one.

With the victory, Pegula booked her place in the quarter-final against Spain's Paula Badosa after her stylish 6-1 6-3 result over Russian 19-year-old Diana Shnaider.

Badosa now has a 4-2 record since the beginning of March, but both of those losses came to the in-form Elena Rybakina in eliminations from both the Indian Wells Open and the Miami Open.

Meanwhile, reigning Wimbledon and US Open finalist Ons Jabeur needed just 82 minutes to dispatch Caroline Dolehide 6-3 7-5, and combined with her opening victory against Lesia Tsurenko it is Jabeur's first consecutive wins since the Adelaide International in early January.

Jabeur will play Anna Kalinskaya in her quarter-final after the Russian upset two-time Australian Open champion Victoria Azarenka 6-4 7-6 (7-5).

It was a strong day for the Russians, as Ekaterina Alexandrova got the better of Julia Grabher 6-4 6-2, and world number eight Daria Kasatkina knocked out Bernarda Pera 6-3 7-6 (7-3).

Olympic gold medalist Belinda Bencic won the longest match of the day in a two-hour-and-45-minute war of attrition against Shelby Rogers 4-6 7-5 6-2, but the Americans had something to cheer for in the late window as Madison Keys advanced past Magda Linette 6-2 3-6 6-1.

Top seed Jessica Pegula cruised into the Charleston Open third round with a straight-sets victory over Anna Blinkova on Wednesday.

The American world number three triumphed 6-2 6-0 in 65 minutes, winning the second set to love in 27 minutes.

Blinkova, who is ranked 63rd in the world, was no match for Pegula, who won 71 per cent on first serve and 65 per cent on her second. Pegula also generated 10 break points, winning 71 per cent on the Russian's second serve.  

The American will take on Romanian 15th seed Irina-Camelia Begu in the round of 16, after she toppled resurgent 2020 Australian Open winner Sofia Kenin 6-1 6-4.

Defending champion and fourth seed Belinda Bencic triumphed in the evening session, breezing past Canada's Katherine Sebov 6-0 6-3 in 62 minutes.

Bencic will meet Shelby Rogers in the third round with the American edging countrywoman Caty McNally 6-7 (4-7) 7-5 6-1.

Ninth seed Madison Keys beat Hailey Baptiste 6-1 6-2, setting up a third-round clash with eighth seed Magda Linette who got past Varvara Gracheva 6-7 (3-7) 7-5 6-4.

Third seed Daria Kasatkina defeated Madison Brengle 6-2 6-1, progressing to face 38th ranked American Bernarda Para who beat Cristina Bucsa 6-3 6-4.

Spaniard Paula Badosa won 7-5 7-6 (8-6) over 2021 US Open runner-up Leylah Fernandez and will face Diana Shnaider who upset fifth seed Veronika Kudermetova 6-4 6-3.

Eugenie Bouchard's campaign at the Copa Colsanitas was halted in the second round with a 6-0 6-7 (7-9) 6-4 loss to fourth seed Kamilla Rakhimova.