Belinda Bencic continued her impressive run of form this season with a straight-sets win over Viktoriya Tomova in the opening round of the Qatar Open.

The seventh seed triumphed at the Abu Dhabi Open last week to add to her Adelaide International 2 success from January and is now seeking another title in Doha.

Bencic eased to a 6-0 6-1 win against Bulgarian qualifier Tomova and will face two-time tournament winner Victoria Azarenka for a place in the quarter-finals.

Maria Sakkari also advanced on Tuesday, overcoming Zheng Qinwen 6-2 3-6 6-3, as did fellow seeded player Daria Kasatkina with a 7-6 (7-5) 6-2 win against Rebecca Marino.

Zheng may have suffered an early exit, but last season's WTA Newcomer of the Year produced the shot of the tournament with a winning tweener en route to taking the second set.

Petra Kvitova, another two-time winner in Qatar, defeated Zhang Shuai 7-5 6-2, while Danielle Collins beat Elise Mertens 6-4 7-6 (8-6) and will now face top seed Iga Swiatek.

Second seed Jessica Pegula will take on Jelena Ostapenko, meanwhile, after the Latvian proved too strong for Madison Keys in a 7-5 6-2 victory.

Belinda Bencic breezed through to the Abu Dhabi Open final after a commanding 6-2 6-3 victory over Beatriz Haddad Maia on Saturday.

The world number nine, who is yet to drop a set this week, is into her second WTA final of 2023, having triumphed in Adelaide last month.

Haddad Maia arrived in the clash fresh from winning each of her previous six encounters with top-10 opponents, including her quarter-final victory over Wimbledon champion and Australian Open finalist Elena Rybakina.

But the Brazilian had already spent almost eight hours on court in this event prior to this contest, in which Bencic dropped just five games on the way to wracking up her 11th win of the campaign – the joint-most on the WTA Tour alongside Melbourne winner Aryna Sabalenka.

She will play number eight seed Liudmila Samsonova in Sunday's final after the Russian defeated Zheng Qinwen 6-4 1-6 6-4.

After being edged out in the first set, Zheng responded to motor through the second and seemed to have the momentum going into the third, but Samsonova showed impressive resolve to see off three break points against her, before taking her first on match point.

At the Linz Open, top seed Maria Sakkari is out after going down 3-6 6-3 6-4 to sixth seed Petra Martic in a match that lasted over two and a half hours.

The Croatian will play Anastasia Potapova in the final after the number eight seed claimed yet another three-set victory this week to see off Marketa Vondrousova 6-1 6-7 (4-7) 6-3 and secure her fifth WTA final appearance.

Belinda Bencic stood firm to reach the quarter-finals of the Abu Dhabi Open while fellow favourites Anett Kontaveit and Jelena Ostapenko headed home.

Bencic clinched her second last-eight spot of the year with a 6-4 7-5 win over Marta Kostyuk, though the world number nine was pushed hard by the Ukrainian, who remains without a top-10 win in her career after failing to see through the second set from 5-3 up.

The second seed will next face Shelby Rogers, who advanced courtesy of a walkover following Kontaveit's retirement through injury after falling 4-1 behind in the pair's decisive third set. 

Kontaveit was not the only seed to fall, with Ostapenko slipping to a surprise 7-6 (12-10) 6-1 loss against China's Zheng Qinwen.

Fourth seed Veronika Kudermetova fared better, however, racing to a 6-1 7-5 win against Elise Mertens to keep her campaign alive. 

At the Linz Open, top seed Maria Sakkari cruised to a straight-sets success against Varvara Gracheva, while Anastasia Potapova battled to a 7-5 3-6 6-3 victory against Jule Niemeier.

Third seed Irina-Camelia Begu was the highest-ranked player to exit in the last 16 in Austria, suffering a 6-2 6-1 defeat against Danish 20-year-old Clara Tauson.

Maria Sakkari joined eight of her fellow co-stars from the Netflix series Break Point in suffering an early exit from the Australian Open.

Of the 10 players to have featured in the series, which first aired on the streaming platform last week, only Felix Auger-Aliassime remains following Sakkari's defeat to Lin Zhu on Friday.

Sakkari, the WTA sixth seed, went down 7-6 1-6 6-4 to world number 87 Lin, who claimed her first victory over a top-10 opponent.

Lin became the sixth Chinese female player to reach the fourth round at the Australian Open in the Open Era.

"I mean honestly, am I in a dream?" Lin said in her on-court interview.

"I have to believe in myself that I have the ability to be able to play at this high level. Who knows what's going to happen? You never know."

She added in her press conference: "It means a lot. It makes me believe that I can play at this level and I can beat a player like her.

"It took me a long time to get here, and so that's why I'm so emotional. This is not the end. Let's keep going."

Sakkari's defeat saw the Greek join Thanasi Kokkinakis, Taylor Fritz, Matteo Berrettini, Casper Ruud and Ons Jabeur in exiting the season's first grand slam within the opening three rounds.

Ruud and Jabeur were the respective second seeds in the men's and women's singles, while Berrettini and Kokkinakis both fell foul of a resurgent Andy Murray, whose victory comeback over Kokkinakis lasted almost six hours and went on beyond 4:00 am local time.

Nick Kyrgios, Ajla Tomljanovic and Paula Badosa also featured in the five-part Netflix series, which will air its second batch of episodes later in the year, but all three withdrew from the Australian Open due to injury.

A downcast Sakkari, who had rubbished the suggestion of any "Netflix curse" in a previous press conference, told reporters: "I think that my level was not good at all. I started the match by being very defensive and not hitting the ball, just being scared of playing my game.

"She had basically nothing to lose. She was playing free. She was enjoying herself. She was playing very, very well. I didn't handle the situation well.

"She was barely missing anything, [not] making any unforced errors. That's how I felt. She was very solid from both sides. I've seen her on the tour. I've never seen her playing that well, to be honest.

"Of course, beating Jil [Teichmann] in the round before, she was pretty pumped and motivated to have a good result here. She has achieved it already by beating two very good players."

Lin's next opponent will be two-time Australian Open champion Victoria Azarenka, who became the eighth female player in the Open Era to win 45+ main draw matches at the Australian Open by beating Madison Keys 1-6 6-2 6-1.

Azarenka joins Serena Williams, Maria Sharapova, Lindsay Davenport, Venus Williams, Martina Hingis, Steffi Graf and Martina Navratilova on that list.

"She's a great champion," Lin said of Azarenka. "She's a great player. I will just keep playing like I played today and trust myself, enjoy the match. Who knows?"

Iga Swiatek was in tears after losing to Jessica Pegula as the United States took a 2-0 United Cup semi-final lead over Poland, while Italy moved into command against Greece on Friday.

World number one Swiatek was beaten 6-2 6-2 by the impressive Pegula in just 71 minutes at Ken Rosewall Arena.

Swiatek got the better of Pegula three times last year, but the American made light work of seeing off the three-time grand slam champion this time around to put USA in front.

Pegula struck 21 winners, attacking the Swiatek serve in a commanding display just over a week before the Australian Open gets under way.

Swiatek's emotions came out after she was emphatically defeated by the world number three in Sydney.

Pegula said: "I played her today, conditions are totally different than anywhere else I played her. Obviously maybe I had a little bit of an advantage, they just flew in yesterday.

"Definitely the fastest conditions I have played her [in]. Every other place I've played her has been pretty slow. I think that favoured me a lot, and I was able to use that to my advantage and play a really super clean match.

"I think I just was able to execute my game plan probably better than I have previous times."

Frances Tiafoe backed up Pegula's win by beating Kacper Zuk, who replaced the unwell Daniel Michalski, 6-3 6-3.

That ensures Taylor Fritz has a chance to put the United States into the final if he beats Hubert Hurkacz on Saturday.

Italy are in control of the other semi-final following victories for Martina Trevisan and Lorenzo Musetti.

Trevisan upset Maria Sakkari 6-3 6-7 (4-7) 7-5 before Musetti outclassed Stefanos Sakellaridis, winning 6-1 6-1.

Wins for Hubert Hurkacz and Magda Linette saw Poland advance to the City Finals of the United Cup in Australia on Tuesday.

Hurkacz made it through a tough encounter against Stan Wawrinka 7-6 (7-5) 6-4 to give Poland a 2-1 lead in their Group B tie with Switzerland in Brisbane, before Linette came from behind to beat Jil Teichmann 5-7 6-4 6-1 to clinch it.

Poland will face Italy in the Brisbane final, whose 5-0 whitewash of Norway included Matteo Berrettini sealing victory with a 6-4 6-4 win over Casper Ruud.

In Perth, Croatia advanced to the City Finals after a dramatic day that saw Caroline Garcia get France on the board with a straight sets win against Petra Martic, before Adrian Mannarino came from a set down against Borna Gojo to serve for the match as he looked to bring his country level at 2-2.

However, Gojo broke back in a tense encounter before winning a deciding tie-break to send Croatia through to face Greece, who sealed a 4-1 win against Belgium.

Stefanos Sakellaridis recovered from going a set behind to beat Zizou Bergs, before Maria Sakkari overcame Elise Mertens 6-1 7-5, with Sakkari and Stefanos Tsitsipas adding some gloss to the score with a mixed doubles success against Kirsten Flipkens and Michael Geerts. 

Spain and Australia were unable to progress but the hosts at least had the consolation of securing a victory thanks to wins for Jason Kubler against Albert Ramos-Vinolas, and the mixed doubles duo of John Peers and Sam Stosur against Jessica Bouzas Maneiro and David Vega Hernandez.

The USA had already secured their Finals berth against Great Britain in Sydney, but were ruthless as they finished off their tie against Germany to win 5-0.

After Jessica Pegula beat Laura Siegemund 6-3 6-2, Frances Tiafoe also defeated Oscar Otte in straight sets, before the American duo combined to beat Siegemund and Daniel Altmaier 6-7 (5-7) 6-4 10-7 to complete a clean sweep.

Maria Sakkari sealed victory for top-seeded Greece over Bulgaria in the United Cup with a straight sets win over Viktoriya Tomova.

Team-mates Stefanos Tsitsipas and Despina Papamichail had already won their matches on Thursday, and Sakkari's 6-3 6-2 triumph gave Greece an unassailable 3-0 lead.

Michail Pervolarakis was defeated by Dimitar Kuzmanov in the final singles match between the nations, but Tsitsipas and Sakkari teamed up to earn Greece a 6-4 6-4 success in the doubles encounter to end on a high.

World number 16 Matteo Berrettini helped Italy topple Brazil by overcoming Thiago Monteiro 6-4 7-6 (9-7).

That gave Italy a 2-1 lead, and Lucia Bronzetti finished the job by demolishing Laura Pigossi in straight sets, with Brazil powerless to overturn the deficit despite Berrettini and Camilla Rosatello's defeat in the doubles match.

US Open semi-finalist Frances Tiafoe clinched a win for the United States over the Czech Republic after opponent Tomas Machac retired with an ankle injury with the score at 6-3 2-4.

Petra Kvitova had defeated Jessica Pegula 7-6 (8-6) 6-4 in the third singles match to give Czech Republic hope, but Tiafoe's win settled the contest before Pegula and Taylor Fritz joined up for success in the doubles.

Great Britain were 3-2 victors over Australia despite a pair of defeats on day two in Sydney.

Cameron Norrie's triumph over Nick Kyrgios' replacement Alex De Minaur on day one had helped Great Britain to a 2-0 lead over the hosts, and Harriet Dart prevailed over Maddison Inglis to wrap up the victory.

Dan Evans was then beaten 6-3 7-6 (7-3) by Jason Kubler before Dart and Jonny O'Mara fell to defeat in the doubles, but Great Britain's strong start saw them through.

France and Switzerland completed 5-0 sweeps of Argentina and Kazakhstan respectively, with Caroline Garcia winning both her singles and doubles matches in straight sets while Stan Wawrinka saw off Alexander Bublik 6-3 7-6 (7-3).

Caroline Garcia produced a dominant performance to overcome Maria Sakkari 6-3 6-2 in the last four of the WTA Finals in Fort Worth on Sunday.

Garcia emerged as the victor of a topsy-turvy tussle with Daria Kasatkina on Saturday, but enjoyed a far more routine outing as she sealed her first final appearance at the competition.

Sakkari had cruised through the Nancy Richey Group with three straight-sets victories, but fell some way short of those lofty standards as she failed to force a single break-point in the opener.

Garcia took 80 per cent of points on her first serve in the opening set, breaking in the fourth game and dictating proceedings from the baseline in impressive fashion.

The match resembled something of a procession after Garcia claimed consecutive breaks to seize the initiative in the second set, and the French Open champion sealed the victory when Sakkari's weak return clipped the net. 

Garcia has now won seven matches against top-10 opponents in 2022, becoming the first French player to post seven such victories in a calendar year since Amelie Mauresmo in 2009.

The world number six is also the first player to reach the title match at the WTA Finals after turning 29 years old since Venus Williams did so in 2017, and will now bid to cap a tremendous year with victory over either Iga Swiatek or Aryna Sabalenka.

WINNERS/UNFORCED ERRORS

Garcia – 21/17

Sakkari – 8/19

ACES/DOUBLE FAULTS

Garcia – 6/1

Sakkari – 0/1

BREAK POINTS WON

Garcia – 4/5

Sakkari – 1/3 

Caroline Garcia came out on top in an almighty battle with Daria Kasatkina to complete the WTA Finals semi-final line-up on Saturday.

The winner of the Tracy Austin Group match in Fort Worth knew they would face Maria Sakkari in the last four and it was world number six Garcia who got the job done.

Frenchwoman Garcia won 4-6 6-1 7-6 (7-5) in a topsy-turvy contest that was finally settled in two hours and 27 minutes.

Kasatkina won four games in a row to take the opening set, but sixth seed Garcia stormed back to level the match in emphatic fashion as her aggressive approach paid off.

Russian Kasatkina twice came from a break down in a tense decider and fended off six break points in the ninth game of the final set to hold for a 5-4 lead, but Garcia held her nerve in the tie-break to advance.

Garcia and Sakkari will do battle for a place in the final on Sunday, with the winner facing either Iga Swiatek or Aryna Sabalenka.

WINNERS/UNFORCED ERRORS

Garcia- 42/48
Kasatkina - 16/26

ACES/DOUBLE FAULTS

Garcia - 4/2
Kasatkina - 1/8

BREAK POINTS WON

Garcia - 6/14
Kasatkina - 5/7

Maria Sakkari had no issues in her last WTA Finals group stage match against Ons Jabeur, cruising through to the final-four with a 6-2 6-3 victory on Friday.

Sakkari needed only 69 minutes for the straight-sets win, making it her third straight-sets triumph in the Nancy Richey Group after also blowing past Aryna Sabalenka and Jessica Pegula.

Greece's Sakkari took advantage of some wastefulness from Jabeur, with the Tunisian posting 19 unforced errors with just eight errors. Her efficiency did not improve in the second set, managing only three winners with 12 unforced errors.

Sakkari's serve was a weapon throughout, landing 70 per cent of her first-serves fair and converting 82 per cent of those chances (27-of-33) into points.

Jabeur could have advanced through to the next round with a win, but instead Aryna Sabalenka will advance with Sakkari out of the Nancy Richey Group.

The only other player yet to lose a set in the tournament is Iga Swiatek in the Tracy Austin Group – who has only played two matches so far.

WINNERS/UNFORCED ERRORS

Sakkari - 11/10

Jabeur - 11/31

ACES/DOUBLE FAULTS

Sakkari - 2/2

Jabeur - 0/3

BREAK POINTS WON

Sakkari - 4/7

Jabeur - 1/2

Maria Sakkari is yet to lose a set through two WTA Finals games, defeating Aryna Sabalenka 6-2 6-4 on Wednesday to advance through the Nancy Richey Group into the final-four.

The first set was relatively smooth sailing for the Greek, taking advantage of Sabalenka's errors to break twice.

Belarus' Sabalenka did create some chances herself, with two break opportunities compared to Sakkari's four, but could not take either. She also committed the only two double faults of the opening frame, and had 13 unforced errors with her seven winners, while Sakkari had an even four unforced errors and four winners.

The second set was more of the same, with Sabalenka committing 16 unforced errors with only eight winners as Sakkari collected an early double-break to go up 3-0, seemingly coasting to victory.

But Sabalenka fought back, winning the next four games in a row to briefly take the lead in the set. Unfortunately for her, the see-sawing contest saw Sakkari rattle off the next three games to close out the win.

Sabalenka is still a chance to advance to the next round after defeating Ons Jabeur in her opening fixture.

WINNERS/UNFORCED ERRORS

Sakkari - 15/16

Sabalenka - 15/29

ACES/DOUBLE FAULTS

Sakkari - 1/1

Sabalenka - 0/4

BREAK POINTS WON

Sakkari - 5/7

Sabalenka - 2/7

Maria Sakkari defeated Jessica Pegula 7-6 (8-6) 7-6 (7-4) in the opening match of the WTA Finals on Monday in Fort Worth.

It was a highly anticipated first match after the same two competitors faced off in the Guadalajara Open final just eight days ago, with Pegula taking that contest 6-2 6-3 in convincing fashion.

That final lasted just 71 minutes, but the rematch would be a far more gruelling affair, with the first set alone reaching 73 minutes.

Illustrating the even nature of the contest, both players won exactly 52 out of 104 total points played in the opening set, with both players converting three of their five break point opportunities.

Sakkari created a slight edge in the second set, winning 52 per cent of the points (42-of-81) and creating four break point opportunities to Pegula's one.

Pegula took her only chance to break, and then saved two match points to force a tiebreak, but Sakkari would not be denied as she secured the victory and moved to the top of the Group B standings.

BREAK POINTS WON

Sakkari - 4/9

Pegula - 4/6

ACES/DOUBLE FAULTS

Sakkari - 3/1

Pegula - 3/4

WINNERS/UNFORCED ERRORS

Sakkari - 22/22

Pegula - 22/28

There will be one racing certainty when the WTA Finals gets under way: a new champion will be crowned.

Iga Swiatek heads the list of contenders to carry off the trophy in Fort Worth, Texas, having enjoyed a spectacular season.

Ascendant Americans Jessica Pegula and Coco Gauff will be chasing a home victory, while Tunisia's Ons Jabeur has reached finals at Wimbledon and the US Open so loves the big occasion.

Ahead of the tournament getting under way on Monday, Stats Perform has taken a look at the eight-player field.

Swiatek still the player to beat

With no past winner in the line-up, there is every reason to look to the world number one, Swiatek, as favourite.

The 21-year-old Polish player has eight titles this year, lifting trophies at Doha, Indian Wells, Miami, Stuttgart, Rome, the French Open, the US Open and San Diego.

Indeed, she is the only grand slam singles winner in the draw, with Ash Barty having retired and Elena Rybakina absent after no ranking or race points were awarded at Wimbledon, where she was a surprise champion.

Rybakina's absence calls into question the meritocracy of this year's tournament, which is intended to showcase the top performers on tour, yet there can be no doubt the season's premier performer is in the draw.

French Open and US Open winner Swiatek's remarkable run of 10 straight-sets victories in finals (dating back to the 2020 French Open) was finally ended by Barbora Krejcikova, who sprang a shock by winning in Ostrava in early October.

But by getting back to winning ways a week later in San Diego, scrapping for a three-set victory over Donna Vekic in the title match, Swiatek produced a typically impressive response, beating Qinwen Zheng, Gauff and Pegula on her way through the draw to improve to 64-8 in her win-loss record for the year.

Here is a measure of her dominance this season: Swiatek headed the 'Race to the WTA Finals' rankings with 10,335 points, with the players in second (Jabeur) to eighth place (Daria Kasatkina) having tallies ranging between 4,555 and 2,935 points.

Is Pegula the chief rival to Swiatek?

She might not have been the player that would have sprung to mind even a month ago, but Pegula's victory at the Guadalajara Open this month was an eye-opener.

Beginning by saving match points in a thrilling three-setter against Rybakina, Pegula took down grand slam winners Bianca Andreescu, Sloane Stephens and Victoria Azarenka before swatting aside Maria Sakkari in the final.

Pegula has reached quarter-finals at the Australian, French and US Opens in 2022, and she has a tour-high 39 wins in WTA 1000 events since the beginning of last year.

She is up to third in the WTA rankings, one ahead of Coco Gauff, with the United States now having two women in the top five for the first time since October 2010, when Serena Williams was number two and sister Venus sat fourth.

As Pegula said after the Guadalajara final: "I'm definitely a very ambitious person. A little bit of a perfectionist, as well. I don't think you could win if you weren't ambitious, especially at this level.

"I feel like it's going to give me more motivation going forward knowing I can win these big titles. I think it will give me a lot of confidence ending the year, going into next year."

These are spirited words. She heads into the tournament with a 0-4 record against Swiatek in 2022, however.

Who's in, who's out, what's it all about?

As well as Swiatek and Pegula, the field for the eight-day tournament includes Caroline Garcia, Aryna Sabalenka and Sakkari, who have all featured at the WTA Finals in the past.

Four players make their debuts, including Pegula, who is joined as a newcomer by Jabeur, Gauff and Daria Kasatkina.

Gauff, 18, has become the 14th player aged under 19 to reach the WTA top five since the rankings were introduced in 1975.

She would not be the youngest WTA Finals champion, were she to lift the title, as Monica Seles has a tight grip on that record, having triumphed at the age of 16 years and 11 months at the 1990 edition.

Last year's champion Garbine Muguruza is absent. The Spaniard was expected by many to push on and enjoy a stellar 2022 season, but it did not play out that way, with the former French Open and Wimbledon winner sliding to 57th in the world rankings after a dismal campaign.

It goes to show that whoever prevails in Fort Worth, we should be cautious about treating the outcome as an indication of what to expect in the new year.

World number five Jessica Pegula clinched a berth in her second WTA final of the year with a straight-sets victory over Victoria Azarenka at the Guadalajara Open on a rainy Saturday.

Pegula defeated the former world number one Belarussian 7-6 (7-3) 6-1 in one hour and 29 minutes, having fought back from a 4-1 first-set deficit.

The American will need to wait until Sunday to learn her opponent, with rain forcing Maria Sakkari and Marie Bouzkova's semi-final to be suspended and eventually postponed with the Greek leading 7-5.

Pegula's triumph was her 40th win of the season, becoming the 10th American woman to achieve that feat.

The victory also made it four successive Grand Slam winners that Pegula has overcome to reach the final in Guadalajara, knocking off Sloane Stephens, Bianca Andreescu and Elena Rybakina along with Azarenka.

Pegula converted three of eight break points, while Azarenka took her only break point of the match to help her open up the 4-1 first-set lead.

The American proved better on her second serve, while she managed to win 15 of 26 points on Azarenka's second serve.

Sakkari and Bouzkova's semi-final will resume at 1pm local time on Sunday, with the fourth seed leading 7-5 after an epic first set that lasted 84 minutes.

The Greek showed off her grit after fluffing an early 3-1 lead by taking her eighth set point, winning a 22-shot rally - the longest of the first set - to break Bouzkova in the 12th game.

The final is due to commence no earlier than 6pm local time on Sunday, meaning it will be a physical test for the victor.

Maria Sakkari secured the eighth and final place at the WTA Finals after defeating Veronika Kudermetova 6-1 5-7 6-4 to reach the semi-finals at the Guadalajara Open on Friday.

The WTA Finals – which is contested by the women who finish top-eight for the season in ranking points – already had seven entrants locked in, with the eighth to be decided by the winner between world number six Sakkari and world number 12 Kudermetova.

Sakkari's ability to fight her way out of tough situations proved to be the difference as she saved 14 of the 15 break points she faced, while converting three of her nine chances. In the deciding third set, Sakkari made the most of her only break point, while saving all five of Kudermetova's chances to get back into the contest.

She will play Marie Bouzkova in the semi-final after the unseeded Czech was the beneficiary of Anna Kalinskaya's injury retirement in the first set, with Bouzkova leading 5-2.

It continues a terrific run of form for the 24-year-old Bouzkova, who is 19-3 in her past 22 matches, with her only losses in that span coming against world number 20 Karolina Pliskova, Wimbledon champion Elena Rybakina and world number two Ons Jabeur.

On the other side of the draw, Jessica Pegula breezed through the challenge of Sloane Stephens to win 6-2 6-2, which would have set up a tantalising all-American matchup against her doubles partner and rising star Coco Gauff, but she could not hold up her end of the bargain.

Gauff fell 7-6 (7-2) 4-6 6-3 to Victoria Azarenka, giving the Belarusian her third consecutive top-20 win after earning her spot in the quarter-final with victories over world number eight Paula Badosa and world number 15 Madison Keys.