Former US Open champion Sloane Stephens progressed into the quarter-finals at the WTA Abierto Zapopan in Guadalajara after a hard-fought win over Chloe Paquet on Thursday.

Stephens won in straight sets but it took almost two hours, triumphing 7-5 6-4 over the Frenchwoman ranked just outside the top 100.

The 28-year-old American was dominant on her first serve, while she broke her opponent five times throughout the match.

Stephens, who is the sixth seed, will play Daria Saville in the last eight after the Australian eased past qualifier Caroline Dolehide 6-1 6-3 in one hour and seven minutes.

Third seed and defending champion Sara Sorribes Tormo made light work of Poland's Magdalena Frech 6-0 6-2 to set up a quarter-final meeting with Marie Bouzkova.

Colombian fourth seed Camila Osorio needed just over two hours to get past Hailey Baptiste 1-6 6-3 6-3, fighting back after a lopsided first set.

Anett Kontaveit remained on course for a sixth title in seven months, progressing to the Qatar Open semi-finals after defeating Ons Jabeur in straight sets.

Champion in St Petersburg two weeks ago, Kontaveit extended her winning run to eight matches following a 6-4 6-1 success.

The opening set was neck and neck until Kontaveit won 15 out of 16 points from 30-30 at 4-4 to draw first blood and establish a 2-0 lead in the second.

The Estonian, who registered just 12 unforced errors throughout the contest, then took 12 of the last 15 points to advance to the last four. 

"At times, it was just kind of fun because I felt like the level was really good, and I was playing really well," said Kontaveit, who has won nine of her last 13 matches against top-10 opposition.

"I think I have this confidence that I can go deep every week that I'm playing, and I'm not setting these mental barriers to myself that I used to do. 

"I'm very happy with being in the semi-finals, but I also feel like I can still go deeper, I can still do more. So, I'm not too satisfied yet with this result. I feel like if I play well or if I'm consistent, I have a chance with anyone.

"I'm really happy that I'm bringing a good level of tennis consistently every tournament. I think that's something that I'm just most pleased with."

In the semi-finals, Kontaveit will face another in-form player in Jelena Ostapenko, who saw off Garbine Muguruza in straight sets.

Having triumphed in Dubai last week, the 15th seed has now recorded nine successive victories for the first time in her career after prevailing 6-2 6-2.

Ostapenko struck 39 winners and claimed 15 of 18 points on her opponent's second serve as she moved a step closer to a maiden title in Doha, having reached the final six years ago.

Meanwhile, Iga Swiatek is through to her first WTA 1000 semi-final on a hard court after a 6-2 6-3 win over Aryna Sabalenka.

The former French Open champion won seven out of eight breakpoints, while reeling off six successive games in the second set to secure a comfortable victory.

Next up for her is Maria Sakkari, who recorded her third win against Coco Gauff in four meetings after prevailing 6-3 6-3.

The sixth seed is through to her sixth semi-final at WTA 1000 level or above – and targeting her first such title.

Marie Bouzkova is through to the quarter-finals at the Abierto Zapopan in Guadalajara after beating Lucia Bronzetti in straight sets.

The Czech, ranked 96th in the world, will play either number three seed Sara Sorribes Tormo or Magdalena Frech in the last eight after sealing a 7-6 (7-2) 6-2 win against Bronzetti.

Anna Kalinskaya is also through after following up her impressive first-round win against eighth seed Qinwen Zheng by beating another Chinese opponent, Xinyu Wang 6-4 0-6 6-4.

The Russian had a mixed outing and looked to be on the ropes after losing the second set, but recovered and will go up against either fourth seed Camila Osorio or Hailey Baptiste in the quarter-finals.

One last eight match that has been finalised will be between Qiang Wang and Anna Karolina Schmiedlova after they beat Harmony Tan and Anastasia Potapova respectively.

Wang overcame her French opponent – who had eliminated second seed Madison Keys – 6-4 6-2, while Schmiedlova also won in straight sets against Potapova, 6-3 7-6 (7-5).

Two of the top three seeds crashed out of the WTA Qatar Open in the round of 16 as Barbora Krejcikova and Paula Badosa both lost, though top seed Aryna Sabalenka is through to the quarter-finals, along with Coco Gauff.

Sabalenka eased past Jil Teichmann 6-2 6-1 in Doha, winning an impressive 70 per cent of her second serves as she rarely gave her Swiss opponent any hope in a match that lasted just over an hour.

The Belarusian will now play Iga Swiatek in the last eight after the seventh seed beat Daria Kasatkina 6-3 6-0.

Number two seed Krejcikova was eliminated by the winner in Dubai last week, Jelena Ostapenko, 6-3 6-2. The Czech struggled to get going and ended the match with seven double faults to her name.

World number four Badosa fared no better as she also lost in straight sets to Gauff 6-2 6-3, with the 17-year-old winning a dominant 77.1 per cent of points on her first serve.

Badosa is the joint-highest ranked player that Gauff has defeated, along with Naomi Osaka, who was also ranked fourth in the world when she lost to the teenager at the 2020 Australian Open.

Gauff will now face Maria Sakkari after the Greek defeated another American, Jessica Pegula.

Ostapenko will go up against reigning WTA Finals champion Garbine Muguruza who convincingly defeated Madison Brengle 6-0 6-2.

Number four seed and St Petersburg champion Anett Kontaveit is through after a topsy-turvy clash with Elise Mertens 6-3 0-6 6-2 and will come up against Tunisia's Ons Jabeur.

Emma Raducanu was forced to retire in her first WTA Tour match since the Australian Open.

The US Open champion exited to Danka Kovinic in round two in Melbourne, as her bid for another major title was hampered by a painful blister to her right hand.

A month on, Raducanu took on Daria Saville at the Abierto Zapopan in Guadalajara but was forced to call a halt to proceedings after three hours and 36 minutes, with the scores at 5-7 7-6 (7-4) 4-3. It was the longest WTA match of 2022.

The 19-year-old had fallen at the first hurdle at last year's Linz Open, the only previous event where she appeared as the top seed, and she might have feared a repeat amid a slow start on Tuesday.

Raducanu and Saville traded early breaks, before the Australian seemed to settle first, claiming a 3-1 lead.

Back roared Raducanu and a tense opener continued in back-and-forth fashion, although the big opportunities fell the Briton's way.

She let slip three break points at 5-4 but had four more at 6-5, eventually able to celebrate with a mixture of relief and delight when Saville netted.

Raducanu served for the match at 5-3 in the second, but Saville battled on not only to force the tie-break but also a deciding set.

The Australian fell 2-0 down in the third but was ahead 3-2 when Raducanu took a medical time-out and returned to court with heavy strapping on her leg. After struggling through another two games, Raducanu retired a break down at 4-3, meaning Saville will progress to face Caroline Dolehide.

Meanwhile, after the shock exit of Madison Keys the previous day, Raducanu's fellow seeds had no such issues this time around.

Sara Sorribes Tormo and Camila Osorio each advanced in straight sets, beating Katie Volynets and Viktoriya Tomova respectively.

Defending champion Petra Kvitova and former world number one Victoria Azarenka were both forced to withdraw from the WTA Qatar Ladies Open through injury on a day where the top seeds all cruised through in Doha.

Kvitova – who won the 2018 and 2021 editions of the tournament, beating Garbine Muguruza in the final on both occasions – was left unable to continue during her clash with Elise Mertens, later tweeting that an injury to her left wrist had flared up during the second set.

Her conqueror Mertens will face fourth seed and WTA St Petersburg champion Anett Kontaveit in the round of 16 after the Estonian's win over Ana Konjuh on Monday.

Meanwhile, Azarenka joined Kvitova in announcing her withdrawal through injury, suffering pain in her left hip ahead of her scheduled clash with American Madison Brengle.

The tournament's top seeds had more luck on a day of few surprises. World number two Aryna Sabalenka breezed to a 6-2 6-2 victory over France's Alize Cornet, with the Belarusian the favourite for the first WTA 1000 event of the year as world number one Ashleigh Barty is missing through injury.

Elsewhere, world number three Barbora Krejcikova made light work of Poland's Magda Linette, winning 6-1 6-3, and will face former French Open champion Jelena Ostapenko in the round of 16, having eliminated the Latvian from last month's Australian Open.

Paula Badosa also recorded a straight-sets victory, seeing off Clara Tauson 6-1 6-2 to reach the last 16, where she will face 17-year-old American Cori Gauff, who defeated France's Caroline Garcia 6-2 7-6 (7-3).

There were also three-set wins for top-10 players Iga Swiatek and Ons Jabeur, with Swiatek beating Viktorija Golubic 6-2 3-6 6-2, and Jabeur overcoming Aliaksandra Sasnovich 1-6 7-5 6-3.

In the final match of the day, world number six Maria Sakkari downed American Ann Li 6-3 6-3.

Australian Open semi-finalist Madison Keys was bundled out of the Abierto Akron Zapopan in Guadalajara on Monday after a shock three-set loss to Harmony Tan.

Frenchwoman Tan, who is ranked outside the top 100, toppled the second seed in one hour and 46 minutes, winning 6-4 1-6 6-1.

In a seesawing battle, Tan's shotmaking and deft touch was a highlight, helping her steady after emphatically dropping the second set, before winning the first five games of the final set.

The win was Tan's first-ever victory against a top 30 player, qualifying her for the second round where she will play China's Wang Qiang who won 6-2 6-1 over Lauren Davis.

American sixth seed Sloane Stephens did not have such problems in her first-round encounter with qualifier Brenda Fruhvirtova, triumphing 6-2 6-2.

The 14-year-old Czech had enjoyed a good qualifying run but was thwarted by the 2017 US Open champion in 58 minutes.

Fruhvirtova had become the youngest player to compete in a WTA Tour main draw match since Keys in April 2009 at Ponte Vedra Beach.

Fifth seed Nuria Parrizas Diaz bowed out 6-1 6-4 to Slovakia's Ana Karolina Schmiedlova in one hour and 10 minutes. Schmiedlova will face Anastasia Potapova who progressed 6-4 2-2 after Lesia Tsurenko retired.

Japanese seventh seed Misaki Doi also exited, going down 4-6 7-5 6-4 to Marie Bouzkova in the late match, setting up a second-round date with qualifier Lucia Bronzetti who edged American wildcard Caty McNally 6-7 (5-7) 6-3 6-3.

Zheng Qinwen was another seeded casualty, with the Chinese eighth seed going down 6-3 2-6 6-2 to Anna Kalinskaya.

Elina Svitolina and Simona Halep both fell in the first round of the Qatar Ladies Open, while Garbine Muguruza and Anett Kontaveit eased through on Monday.

Former world number one Halep, champion in Qatar back in 2014, was off the pace as Caroline Garcia claimed just her second win in nine meetings against the Romanian with a 6-4 6-3 triumph.

Number 10 seed Svitolina also suffered an early exit after ending up on the wrong side of an almost three-hour slog, with Tereza Martincova eventually succeeding 6-7 (2-7) 7-5 7-6 (7-5).

But fifth favourite Muguruza – a two-time finalist, including in 2021 – did not have much as trouble as she outfought Sorana Cirstea 7-6 (7-4) 6-1 in a second-round contest, with Kontaveit coasting through to round three in similar fashion with a 6-2 6-3 win over Ana Konjuh. 

Jelena Ostapenko, who is a former finalist in Doha and champion in Dubai last week, managed a sixth consecutive victory in the Middle East as she downed Oceane Dodin 6-4 6-2 to reach the second round, while 11th seed Elena Rybakina fell at the first hurdle to Jacques Cristian in a 6-4 6-3 loss.

Angelique Kerber, the 13th ranked player at the tournament, was another surprise first-round loser as she fell 4-6 6-3 6-2 to Jil Teichmann.

Cori Gauff secured her spot in the second round with a straightforward 6-2 6-3 victory over American compatriot Shelby Rogers, while 16th seed Elise Mertens battled to a 6-3 2-6 7-5 win over Jasmine Paolini.

Meanwhile, defending champion Petra Kvitova had no trouble easing past Irina-Camelia Begu 6-3 6-1, and Daria Kasatkina edged out Ajla Tomljanovic 6-4 6-7 (4-7) 6-2.

Belinda Bencic made a painfully sharp exit from the Qatar Open as she was beaten 6-4 3-6 6-3 by rising star Clara Tauson.

The Olympic champion was the highest-profile casualty on day one, losing to a player making her main-draw debut in a WTA 1000 event.

Only the second Danish player to appear in Doha, after former world number one Caroline Wozniacki, the 19-year-old Tauson came from 4-2 down to take the opening set, before Bencic levelled up.

But Tauson was not to be denied. The world number 33 gained a crucial break in game four of the decider, before winning 12 of the last 13 points on her serve to set up a second-round clash with third seed Paula Badosa.

"It was a very tough match," said Tauson, who hit seven aces. "I know Belinda is playing very well, so I had to play my best today, and I did sometimes. 

"I have my confidence, but every match is really tough at this level, so I'm doing my best."

Two-time champion Victoria Azarenka survived a scare to scrape past Kazakhstan's Yulia Putintseva 5-7 6-2 7-5.

The 12th seed, who is aiming to become the first player to lift this trophy three times, recovered from two breaks down in the decide before rescuing match point at 5-4 down and eventually scrambling over the line.

Amanda Anisimova, who defeated Bencic and Naomi Osaka at the Australian Open, built on her early-season momentum by seeing off Beatriz Haddad Maia 7-5 6-4.

Ninth seed Jessie Pegula – a quarter-finalist in the season's opening grand slam – beat doubles world number one Katerina Siniakova in straight sets, while former Australian Open champion Sofia Kenin lost in three sets to fellow American Ann Li.

Jelena Ostapenko secured the fifth WTA title of her career with a dominant victory against Veronika Kudermetova in the final of the Dubai Duty Free Tennis Championships on Saturday.

Ostapenko eased to a 6-0 6-4 win in just 65 minutes, which is expected to take her up to number 13 in the rankings, the first time the former world number five will have been in the top 20 since October 2018.

An impressive week for the Latvian has seen her beat Sofia Kenin, Iga Swiatek, Petra Kvitova, and Simona Halep on her way to the final, and she never looked like slipping up here.

It was consistency that made the difference, with Ostapenko winning 63.6 per cent of points on her first serve, but also an impressive 58.3 per cent on her second.

She took the first set in just 23 minutes, with her serve allowing her to zip through games with ease as Kudermetova had no answer to it, or indeed her returns.

The Russian recovered well in the second set and earned an early break, but things soon swung back to take Ostapenko to 5-3 and serving for the title. Kudermetova managed to break, only for her opponent to do the same to seal the win.

Jelena Ostapenko will meet Veronika Kudermetova in the Dubai Tennis Championships final after defeating Simona Halep 2-6 7-6 (7-0) 6-0 on Friday.

Ostapenko, who is the world number 21, stunned Halep in their first meeting in the 2017 Roland Garros final to win her first Grand Slam before the Romanian exacted revenge in Beijing later that season.

In their first meeting since that last-four clash, Halep raced out the blocks to wrap the first set in just 27 minutes as she converted both break-point opportunities to take an early lead.

However, Ostapenko responded emphatically in the following set, claiming a 3-0 advantage before eventually levelling things up after a one-sided tie-break separated the pair in the second.

Ostapenko carried her momentum in the deciding set as she made a blistering start, with Halep unable to win a single game as the 24-year-old secured victory in an hour and 36 minutes.

Kudermetova awaits the Latvian in the final after Marketa Vondrousova was forced to withdraw from her last-four match due to a right adductor injury.

The pair have not met before on the WTA Tour but boast identical records at the start of the 2022 season, with both winning eight of their matches and losing three.

Two-time champion Simona Halep strode through to the Dubai Tennis Championships semi-finals with a 6-4 6-3 win over eighth seed Ons Jabeur on Thursday.

A series of upsets meant Jabeur was the only seed left in the tournament going into Thursday, but she was outfought by Halep, whose win-loss record in 2022 now stands at 11-1.

The result followed two years on from Halep beating Jabeur in the second round at the same tournament, on that occasion needing a third-set tie-break to get the better of the Tunisia. Halep went on to win the title on that occasion.

"It was a very tough match. Even if it's in two sets, it felt much harder than that," Halep said of Thursday's win.

"I had in my mind big time the match from 2020, it was so close and I knew I'd have to fight till the end."

Quoted on the WTA website, former Wimbledon and French Open winner Halep added: "I've been focused on what I have to do, and I wanted just to push Jabeur back because she has such a big game."

Halep will face Jelena Ostapenko in the last four after the big-hitting Latvian overcame Petra Kvitova 5-7 7-5 7-6 (11-9).

Kvitova led by a set and a break, and twice served for the match, yet Ostapenko prevailed to add the 2013 Dubai champion to the scalps of Sofia Kenin and Iga Swiatek this week.

Ostapenko, who triumphed in two hours and 39 minutes, has now reached at least the semi-finals in four of her last seven tournaments.

The other semi-final will be contested by Veronika Kudermetova and Marketa Vondrousova.

Kudermetova reached her third career WTA 500 semi-final after beating lucky loser Jil Teichmann 6-2 5-7 6-4 in two hours and 23 minutes.

Vondrousova, meanwhile, became just the third ever qualifier to reach the last four of the tournament thanks to a 7-5 6-4 win over Dayana Yastremska.

Defending champion Garbine Muguruza, 2021 finalist Barbora Krejcikova and top seed Aryna Sabalenka were all eliminated from the Dubai Tennis Championships on Wednesday.

A day of upsets left Ons Jabeur, the eighth seed, as the top remaining player in the draw.

Some big names helped deliver the shocks, though, with world number two Sabalenka usurped by two-time Wimbledon champion and 2013 Dubai winner Petra Kvitova in straight sets.

Muguruza did not look like being one of the scalps as her title defence continued against Veronika Kudermetova.

But after taking the first set, the reigning WTA Tour Finals champion went down 3-6 6-4 6-4.

French Open champion Krejcikova, beaten by Muguruza in the final last year, also exited the tournament at the hands of Dayana Yastremska 6-3 7-6 (7-3).

Iga Swiatek let a set lead slip to Jelena Ostapenko, while two-time Dubai champion Elina Svitolina collapsed to lucky loser Jil Teichmann 7-6 (7-0) 6-2.

Jabeur, a winner against Jessica Pegula, was the only seed to win in a ruthless round of 16.

However, her reward in a still stacked quarter-final draw is a meeting with Simona Halep, another who has twice won in Dubai.

Top seed Aryna Sabalenka and defending champion Garbine Muguruza came through their first-round matches unscathed at the Dubai Tennis Championships on Tuesday.

Belarusian Sabalenka made light work of 19-year-old Marta Kostyuk, sealing a 6-4 6-1 win in one hour and 15 minutes.

Standing in her way of a third consecutive quarter-final in Dubai is Petra Kvitova, who beat Camila Giorgi on Monday.

Last year's champion and fourth seed Muguruza began her title defence with a 7-6 (7-5) 2-6 6-2 win over Czech qualifier Katerina Siniakova in two hours and 24 minutes.

Spaniard Muguruza will face Veronika Kudermetova in the second round after the Russian beat former world number one Victoria Azarenka in straight sets earlier on Tuesday.

There were also wins for eighth seed Ons Jabeur and 10th seed Elina Svitolina against Vera Zvonareva and Mayar Sherif respectively.

Elsewhere, there was a shock as qualifier Elena-Gabriela Ruse dumped out third seed Paula Badosa 6-3 5-7 6-4.

Ninth seed Danielle Collins is also out after the American retired due to dizziness in the second set against Marketa Vondrousova.

Sofia Kenin failed to put up a fight as she went down 6-1 6-2 to Jelena Ostapenko.

Iga Swiatek, Simona Halep and Barbora Krejcikova had little difficulty progressing to the second round of the Dubai Duty Free Tennis Championships on Monday. 

The unseeded Halep, who was champion in 2020, needed just an hour and 11 minutes to see off Alison Riske 6-2 6-4 as she looks to climb back up the rankings. 

The two-time grand slam winner went into this week ranked 23rd in the world after a difficult 2021 that was ravaged by injury, but she was in fine form against Riske. She showed good spirit to dig herself out of a hole in the second set and save two break points – the American's only ones in the entire match – in the fourth game. 

Swiatek, seeded sixth, was even more comfortable against Daria Kasatkina, defeating the Russian 6-1 6-2 in just 65 minutes. 

Kasatkina had no answer to Swiatek in the first set and, by the time she started to gain some form of momentum, she was already a set and a break down. 

Swiatek had few issues closing out the match and was joined in the second round by Petra Kvitova, who dropped just two games en route to an emphatic 6-2 6-0 defeat of Camila Giorgi. 

Krejcikova was the highest seed in action. The Czech, who lost to Garbine Muguruza in last year's final, was given a tougher examination than some of her rivals, with wildcard Caroline Garcia putting up a solid fight. 

Krejcikova came through 6-4 7-6 (7-0) in the end, blowing the Frenchwoman away in the second-set tie-break, though she will surely have to sharpen up if she is to go one better than 2021 – the 26-year-old hit just 12 winners to 28 unforced errors. 

There was also a victory for Jessica Pegula in an all-American affair with Coco Gauff that included 10 breaks of serve – the former won 6-4 6-4.