World number five and the tournament's top seed, Aryna Sabalenka, was upset by American Amanda Anisimova 3-6 6-4 6-3 in the third round at the Charleston Open.

Sabalenka's serve was the key to her early success, connecting on 73 per cent of her first serves, and winning 15 of the 19 points in that situation (79 per cent).

When Sabalenka's first serve percentage fell to 48 in the second set, Anisimova found her footing, breaking twice in the frame, before pouncing on the Belarusian's lacklustre second serve in the deciding set, winning seven of nine opportunities to earn the break and the win.

Sixth seed Jessica Pegula was also bounced in surprising fashion, losing 6-4 3-6 6-4 to unseeded compatriot Coco Vandeweghe.

In a razor-close contest, it came down to who took their chances, as Vandeweghe saved seven of the 10 break points she faced, while Pegula could only save one of five.

World number 10 Ons Jabeur had no problem navigating the challenge of Emma Navarro, winning 6-3 6-2 as she broke her opponent's serve on six occasions.

Canadian seventh seed Leylah Hernandez also fell victim to an unseeded upset, going down 3-6 6-3 6-4 against Poland's Magda Linette.

In a meeting between two top-10 seeds, Belinda Bencic got the better of Madison Keys to edge it 6-4 6-4.

Second seed Paula Badosa had to come from a set down to eventually get the better of Claire Liu 3-6 7-6 (10-8) 6-1.

In the late session, French 12th seed Alize Cornet went down in a close tussle against Ukraine's Anhelina Kalinina 7-6 (7-5) 7-5, while Jabeur won her second match of the day, beating Irina Begu 6-3 6-2.

Meanwhile, in Bogota at the Copa Colsanitas, top seed Camila Osorio dispatched Turkish opponent Ipek Oz 6-3 7-6 (7-4) to move on to the quarter-final where she will meet Elina Avanesyan.

Top-seeded Aryna Sabalenka won for the first time since late February, defeating Alison Riske 7-6 (7-3) 6-4 at the Charleston Open on Wednesday.

Losing her opening matches at the sunshine double of Miami and Indian Wells, after only taking five games off Iga Swiatek at the quarter-final in Doha, the world number five improved her head-to-head record with Riske to 5-0.

Sabalenka by no means cruised to victory, though, failing to close the match out at 5-2 in the second set. Riske had four break points to level at 5-5, but the 23-year-old powered through when she needed to, eventually closing out after an hour and 49 minutes.

Second-seeded Paula Badosa of Spain and ninth-seeded American Madison Keys also advanced to the third round at Charleston, with respective wins over Anna Bondar and Ulrikke Eikeri.

Badosa, who made the semi-finals in Charleston last year, overcame a mid-match rain delay to eventually win in an hour and 35 minutes.

Jessica Pegula continued her positive run of form after making the semi-finals in Miami, accounting for Jasmine Paolini with a 6-2 6-1 victory.

Other seeded winners included Belinda Bencic and Alize Cornet, while Elina Rybakina, Ajla Tomljanovic and Shuai Zhang were among seeds who lost on Wednesday.

The weather in South Carolina continued to be a problem at the first WTA clay-court event this season, however, as the match between Ons Jabeur and Emma Navarro was suspended due to heavy rain.

Meanwhile at the Copa Colsanitas in Bogota, Rebecca Peterson was the only seeded player in action on Wednesday, and lost 6-1 6-4 to Germany's Tatjana Maria.

Belinda Bencic survived a scare as she advanced to the Charleston Open second round with a 4-6 7-6 (7-5) 6-3 win over Wang Xiyu.

The Olympic gold medallist was a semi-finalist in Miami last time out, while she has also reached the quarter-finals in Sydney and St Petersburg this year.

However, the 10th seed was in danger of falling at the first hurdle at 5-2 down in the second set against world number 149 Wang.

Bencic rallied to force a tie-break and, subsequently, a deciding set, which she controlled to set up a second-round clash with 16-year-old Linda Fruhvirtova.

Magda Linette also fought back from the brink of defeat; the world number 64 saving a match point before prevailing against Maria Voleynets 4-6 6-3 7-6 (7-4).

Although, there was no joy for former champion Sloane Stephens, who was beaten in three sets by Zheng Qinwen.

Stephens – winner here in 2016 – recovered from losing the opening set 6-3 to take the second 6-4. But there was no denying the Chinese teenager, who dropped just nine points as she raced through the decider 6-0 to claim the first top-50 win of her career.

The likes of Jessica Pegula and Madison Keys were due to feature in the evening session, which was postponed due to severe inclement weather including the possible threat of a tornado.

In Bogota, top seed and home favourite Camila Osorio advanced to the last 16, but only after opponent Ylena In-Albon was forced to retire at 2-2 in the deciding set.

Fourth seed Hanna Udvardy and eighth seed Harriet Dart were beaten in straight sets by Dayana Yastremska and Elina Avanesyan respectively.

Alize Cornet was the highest seed in action on the first day of the Charleston Open, and showed her class, beating Alycia Parks 6-0 7-5.

Cornet, the 12 seed, was nearly perfect in the first set, winning 86 per cent of her service points (12-14) and 80 per cent of her return points (12-15).

15 seed Amanda Anisimova also made it through, and with an identical scoreline, defeating American compatriot Sachia Vickery 6-0 7-5.

China's Shuai Zhang is the 16 seed, and she also only needed two sets to see off unseeded opponent Francesca Di Lorenzo 6-2 6-4.

Hungary's Anna Bondar earned a second-round matchup against world number three Paula Badosa after defeating the Netherlands' Arianne Hartono 6-1 6-4.

Italian Jasmine Paolini will meet six seed and world number 13 Jessica Pegula in the second round after beating Romania's Gabriela Lee 6-2 6-3.

Meanwhile, in Bogota at the Copa Colsanitas, Brazilian qualifier Laura Pigossi defeated five seed Harmony Tan 6-4 6-3.

Top seed and world number 33 Camila Osorio will kick off her tournament on Tuesday against Ylena In-Albon.

Naomi Osaka is through to her first tournament final since her 2021 Australian Open win, getting past Belinda Bencic 6-4 3-6 6-4 at the Miami Open on Thursday.

The reigning Olympic champion looked strong early, breaking twice to go up 4-1 as she took advantage of Osaka's second serve, winning nine of the 11 second serves she saw in the opening set.

As Osaka's success on second serve cleaned up in the second set, Bencic's avenue to victory vanished, unable to save either of the two break points she faced in the second set.

Osaka's first serve percentage shot up to 70 in the deciding set, winning 87 per cent of points on first serve (20-23) to shut the door. Despite Bencic breaking back once after going down a double-break, she was unable to stop her Japanese opponent from serving it out.

Speaking on court after her win, the Florida native was emotional, shedding some tears as she thanked the fans in attendance.

"I just wanted to say thank you everyone, the atmosphere was really good," she said.

"Damn, I'm always crying. I just wanted to say thank you, this tournament really means a lot to me and it's my first time in the finals here."

World number-one-in-waiting Iga Swiatek twice came back from a break down in the second set to overcome the challenge of American Jessica Pegula 6-2 7-5.

The straight sets win for the 20-year-old Polish star means she has now not dropped a set in eight straight matches dating back to the fourth round at the Indian Wells Open where she beat Angelique Kerber two sets to one. 

Against Pegula, Swiatek was simply too strong in the opening set, breaking twice in four tries when Pegula's second serve was vulnerable, with the American only winning 27 per cent of her second serve points (4-15) in the opening frame.

The second set was far more competitive, but Swiatek remained just slightly better both on serve and in the return game in a set where four consecutive games resulted in breaks in a seesawing contest.

Pegula refused to let the top seed serve it out comfortably, saving two match points to extend the second set at 5-5. It was just delaying the inevitable as Swiatek broke back instantly and held her nerve, and serve, to avoid a tie-break.

Iga Swiatek progressed to her fourth WTA 1000 semi-final on Wednesday at the Miami Open, defeating Petra Kvitova 6-3 6-3.

After taking out tournaments in Doha and Indian Wells this year, the 20-year-old's undefeated streak now moves to 15 in a row.

Kvitova largely stayed in points in the opening exchanges and held a higher first-serve rate than Swiatek, but indicative of the form the Polish star is currently in, she played with clarity and did not hesitate when opportunities presented.

Along with winning six of eight points on Kvitova's second serve in the first set, the soon-to-be world number one converted on her sole chance at break point, claiming the crucial break in the sixth game before closing the opening set out.

After a tough service hold in the fourth game and four initial chances at break point in the second set, Swiatek made it count on her fifth attempt, spectacularly managing to move the 28th seed around the court and turn defence into attack.

Seeing the finish line, the Polish second seed grew increasingly assertive in both serve and shot selection to both secure the break and see out the match, even claiming a second break for a punctuation mark.

Swiatek will face Jessica Pegula, who is also through to the semi-finals after Paula Badosa retired from their matchup due to a viral illness.

Pegula was leading 4-1 after only 18 minutes of play when Badosa retired, having won four straight games after initially dropping her serve.

The 28-year-old has now won her last two matches in Miami via retirement after she advanced past Anhelina Kalinina in the fourth round, winning the first set 6-0.

If Pegula defeats Swiatek in the semi-final, it would make for her maiden WTA 1000 final appearance.

Former French Open champion Iga Swiatek has risen to world number one in the wake of Ashleigh Barty's retirement with a 6-2 6-0 win over Viktorija Golubic at the WTA Miami Open on Friday, sealing her ascent.

Swiatek, who won recent WTA 1000 events this year at Indian Wells and Doha, cruised to victory in one hour and 14 minutes over the Swiss.

The 20-year-old Pole, who won the French Open in 2020 and reached this year's Australian Open semi-finals, will officially become the top-ranked player when the rankings are updated on Monday April 4.

Barty's name will be removed from the rankings at her request having announced her shock retirement earlier this week at the age of 25, despite winning this year's Australian Open and last year's Wimbledon titles.

Swiatek is the 28th woman to reach the summit in the WTA rankings, becoming the youngest player at the top since Caroline Wozniacki in 2010. She will become Poland's first-ever number one in tennis history.

The Pole extended her winning streak to 12 matches against Golubic, taking her to a tour-high 21 wins this year, in a match where she saved eight of nine break points and took six of the nine she generated.

Swiatek's main immediate competition for the top rank was fifth seed Paula Badosa who got past Marie Bouzkova 7-5 7-5 in two hours and three minutes.

Badosa, who got the edge by grinding out games under pressure, will face Yulia Putintseva in the third round after she won 6-3 4-6 7-5 over Lesia Tsurenko.

Fourth seed Maria Sakkari was bundled out of contention following a shock 4-6 6-1 6-2 loss to Brazilian Beatriz Haddad Maia.

Two-time major winner Petra Kvitova needed three sets to get past Clara Burel, winning 6-1 3-6 6-3 in one hour and 45 minutes.

Jessica Pegula beat Sloane Stephens 6-1 6-4, Cori Gauff got past Qiang Wang 7-5 6-4 and 20th seed Elise Mertens went down 7-5 2-6 6-1 to Linda Fruhvirtova.

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.

Ash Barty was told how her backhand slice has been compared to that of Roger Federer, but the women's top seed at the Australian Open is not convinced.

Barty produced a stellar display as she saw off Jessica Pegula in Tuesday's quarter-final, losing just two games over the entire duel as the American proved no match.

Her victory sets up a semi-final clash with another American, Madison Keys, with Barty aiming to reach the final of her home grand slam for the first time.

Barty was ruthless against Pegula, firing 17 winners to her opponent's seven, while she won five of the nine break points available to her.

But it was her backhand slice – one of the most recognisable shots in the women's game today – that was particularly notable to four-time grand slam winner Jim Courier in commentary, who compared Barty in this respect to Federer.

Not that Barty was having any of it.

"That's very kind from Jim," Barty told reporters afterwards. "I think everyone's shots are unique.

"I think obviously Roger has one of the most exceptional slice backhands in the game. Mine's a long way off that. Absolutely, no stretch of the imagination we are even on the same page at all.

"But I love to use my slice, I love to get creative with it, to use it offensively and defensively. Over my career I've learnt it is a weapon for me.

"I try and use it when I have to. Sometimes I try and use it when it's my choice and I can be really, really aggressive with it.

"But being able to use it with variety and have different options has been a massive part of my game through this last couple of years of my career."

When Barty faces Keys in the semi-final, she will have already matched her personal best at the Australian Open – she also reached the last four in 2020.

But the combination of being world number one for over two years and having two grand slams under her belt is helping her maintain focus this time around.

"[It's] a bit of both. I think the process hasn't changed, but obviously the familiarity of knowing what to expect or expect how my body feels and almost be able to deal with those emotions a little bit better has probably changed and grown as I've become more experienced," she continued.

"But the processes for us haven't changed regardless of whether it's a first round of the tournament, latter stage of a grand slam, it doesn't actually matter the process before we walk out on court.

"But it's exciting, and I think also being able to embrace the excitement of being in with a chance to play deep in your home slam, it's pretty cool. I think going out there and enjoying that and really embracing that experience helps for sure."

Ash Barty was in clinical form to swat aside Jessica Pegula 6-2 6-0 in just 63 minutes and book her spot in the Australian Open semi-finals.

The world number one is still to drop a set at her home slam in Melbourne and made easy work of her opponent as Barty continued her bid to become the first female Australian singles champion since Chris O'Neil in 1978.

Barty won nine games in a row from 3-2 up in the first set to take complete command and she can now prepare for a semi-final showdown with another American in the form of Madison Keys.

A nervy-looking Pegula was rushing her shots in the early exchanges and Barty broke in the first game when a forehand cross set up a break point chance that her opponent put into the net.

Barty had chalked up 12 unforced errors by game four, but it was her aggressive tactics that had Pegula completely on the ropes and when a thumping forehand set up another break point in game seven, it was little surprise when it was converted.

By this point Barty was in complete command and Pegula had no answer to the variety of shots her opponent rained down on her.

The second set raced by in just 28 minutes, with Barty putting the finishing touch on a mightily impressive performance when Pegula put a return long on the second match point.

"Jess is an incredible person and a brilliant girl. I love to test myself against her. She's had sensational couple of years, she's definitely a top-20 player, there's plenty more to come for sure," Barty said after the match.

On reaching the semis in Melbourne for the second time after doing so in 2020, she added: "I've grown as a person, as a player, I'm a more complete tennis player.

"Credit to my team, they do so much work behind the scenes to make me the best version of myself, I love playing out here. Hopefully I've got a little bit more left."

DATA SLAM: Barty serves up a treat again

Barty defeated both Pegula and Keys en route to winning her maiden slam title at the 2019 French Open and history could be repeating itself here with the world number one playing arguably the best tennis of her career.

Behind her dominance is phenomenal success on serve. Barty is still yet to drop a set in Melbourne, and went 63 games without being broken before Amanda Anisimova did so in the previous round. Here, she lost just five points on first serve (22 of 27, 81 per cent) and gave up just a solitary break-point opportunity in the match.

WINNERS/UNFORCED ERRORS

Barty – 17/22
Pegula – 7/26

ACES/DOUBLE FAULTS

Barty – 6/2
Pegula – 1/3

BREAK POINTS WON

Barty – 5/9
Pegula – 0/1

Victoria Azarenka booked her spot in the Indian Wells Open semi-finals after a straight-sets victory over Jessica Pegula.

Azarenka – a two-time Indian Wells champion in 2012 and 2016 – accounted for Pegula at the WTA Premier 1000 event in the desert on Wednesday.

The former world number one will play 2017 French Open winner Jelena Ostapenko in the semi-finals after she got past American Shelby Rogers.

AZARENKA FLEXES TO BOOK SEMI-FINAL SPOT

Two-time Australian Open champion Azarenka won 6-4 6-2 over Pegula, who had beaten fourth seed Elina Svitolina in the fourth round.

Pegula hit 27 winners compared to Azarenka's 21 but the American had 30 unforced errors, with her 27th-seeded opponent also winning 81 per cent of first-service points to claim the edge.

"I started going for my shots from the beginning. I knew I have to apply pressure on her," Azarenka told her post-match news conference.

"I will have the moment where I will have opportunity. I think in the beginning of the match we had a lot of great rallies, a lot of points where I was like, 'Oh, maybe I got this one,' and she got me. I felt that I really just stuck to being aggressive and being consistent. I got my opportunities."

She added: "I felt that I really played well in the crucial moments. I felt like I stepped up a lot to the occasion. That's what I'm really happy with today."

OSTAPENKO FINISHES STRONG OVER ROGERS

Ostapenko earned her final-four spot with a see-sawing 6-4 4-6 6-3 win in two hours, 15 minutes over Rogers.

In a match that included 15 breaks of serve, Ostapenko won the final five games as she rallied to secure victory and her third semi-final of the year.

"I'm really happy to be in the semi-final. It's been a tough year for me, I've been up and down," Ostapenko – the 24th seed – said during her on-court interview. "I feel like my tennis is getting better and more consistent. Today I was trailing 3-1 in the third set and I was fighting to the last point."

Former world number five Ostapenko trailed 3-1 in the final set before finishing strong to set up a showdown with Azarenka. 

"She's a great player, great champion, such a fighter," Ostapenko said about Azarenka. "Hopefully I can just enjoy it."

Iga Swiatek was knocked out of the Indian Wells Open in the round of 16, the second seed headlining the list of casualties on Tuesday.

Swiatek was swept aside by Jelena Ostapenko in the battle between two previous French Open champions in the desert.

Elina Svitolina, reigning Roland Garros champion Barbora Krejcikova and US Open runner-up Leylah Fernandez were also sent packing from the WTA Premier 1000 event.

SWIATEK CRUMBLES

After top seed Karolina Pliskova was eliminated on Monday, 2020 French Open champion Swiatek crashed out following a 6-4 6-3 defeat to Ostapenko.

Ostapenko – the 2017 Roland Garros winner – rallied from a break down in each set to reach the quarter-finals at Indian Wells, where the 24th seed hit 25 winners to 21 unforced errors in 93 minutes.

"I knew it was going to be a very tough match because she's such a great player, she won a grand slam and she's playing great tennis," Ostapenko said.

Standing in the way of Ostapenko and the semi-finals is Shelby Rodgers, who edged Flushing Meadows finalist Fernandez 2-6 6-1 7-6 (7-4).

SVITOLINA UPSTAGED BY PEGULA

Svitolina's campaign in the desert did not go according to plan, the fourth seed crushed 6-1 6-1 by Jessica Pegula.

Pegula – the 2021 Australian Open quarter-finalist – dismantled Svitolina in just 68 minutes for her seventh last-eight appearance of the season and fourth at WTA 1000 level.

"I think I've just been making a lot of really good decisions in the right moments," said Pegula, who will face two-time grand slam champion Victoria Azarenka following her seventh top-10 victory. "That obviously comes with playing a lot of matches, winning and getting confidence... it's just been more belief that I can play at this level. I think this year, I realised that, and I've been having good results."

KERBER POWERS THROUGH AS KREJCIKOVA FALLS

Three-time major winner and 10th seed Kerber will feature in the quarter-finals after overpowering Ajla Tomljanovic 6-4 6-1.

Kerber will next meet 21st seed Paula Badosa, who shocked third seed and reigning French Open champion Krejcikova 6-1 7-5.

"I think I played a pretty good match today," Badosa said. "I knew I had to play on a high level against Barbora. She's an amazing player, very talented. We played before so I knew what I was going to find there on court. I'm feeling good and I'm very happy that I could play my best today."

Elina Svitolina required a third-set tie-break to progress at the Indian Wells Open, while former world number one Victoria Azarenka handled an old rival in straight sets and Simona Halep fell victim to an upset. 

Svitolina – the fourth seed – dropped the first set to 32nd seed Sorana Cirstea before fighting back to reach the round of 16 at the WTA Premier 1000 event on Sunday.

Two-time grand-slam champion Azarenka joined Svitolina in the next round after knocking out seventh seed Petra Kvitova, but 11th seed Halep became Aliaksandra Sasnovich's latest conquest. 

SVITOLINA SURVIVES CIRSTEA SCARE

Svitolina needed two hours, 32 minutes to outlast Cirstea 4-6 6-4 7-6 (7-3) and remain unbeaten in three career matches against the Romanian. 

The Ukrainian was on the defensive throughout the opening set, facing 11 break points on her serve and managing to save eight of them before Cirstea finally won out. 

Svitolina tightened things up from there, saving four of five break points the rest of the match. 

"It was a very tough match today, and I was fighting and trying to find my game," said Svitolina, who will face Jessica Pegula next. "It was a bit of a rollercoaster.

"I wish I could play a little bit better in the first set, I had chances to grab that set, but unfortunately it didn't play the way I wanted. I had to fight for every point, and Sorana played a great match, I think. I'm happy that I could win today."

AZARENKA TAKES DOWN KVITOVA

Azarenka won her first two Tour-level matches against Kvitova in 2008 and 2009 but had prevailed only once in six meetings since then before Sunday's 7-5 6-4 triumph. 

The two-time Indian Wells champion converted break-point chances when she needed them, six of 11 in all, and had 18 unforced errors to Kvitova's 26. 

"It was important to just stay there, really take my opportunities, not to let her," Azarenka said after taking down two-time Wimbledon winner Kvitova. "If she gets in the groove in couple points, not to kind of let her extend that streak, if you want to call it that.

"I was trying to still create opportunities for myself, be more aggressive, and honestly just believing also that what I'm doing is right and see how I can execute that. So intention was good. Execution followed after."

ANOTHER UPSET FOR SASNOVICH

After knocking off US Open champion Emma Raducanu in the second round, Sasnovich ushered out another grand slam winner in Halep 7-5 6-4 and will next face Azarenka.

The world number 100 had 22 winners to 16 for Halep and won 61.8 per cent of points on her serve as she reached the round of 16 at Indian Wells for the first time. 

In other matches Sunday, ninth seed Anastasia Pavlyuchenkova fell to 23rd seed and US Open runner-up Leylah Fernandez 5-7 6-3 6-4, while second seed Iga Swiatek dropped only one game in a 6-1 6-0 demolition of Veronika Kudermetova. 

Jelena Ostapenko and Shelby Rogers also advanced. 

Karolina Pliskova will face unseeded Italian Camila Giorgi in the National Bank Open final after beating top seed Aryna Sabalenka in the last four.

An intriguing semi-final pitted two of the favourites against one another in Montreal and it was Pliskova, the fourth seed, who came out on top 6-3 6-4.

The Wimbledon finalist broke early in the first and then clinched the set on Sabalenka's serve, too, although she was made to work a little harder in the second.

Pliskova fell behind in the seventh game, but she responded by winning three straight games to wrap up victory.

"It's an amazing feeling to be in another final this year," Pliskova said.

"I think I was super solid today. I just did everything what I was supposed to do to win this match, played smart.

"My serve was pretty good, I have to say."

Indeed, the Czech landed 71 per cent of her first serves in – with 10 aces to two double faults – helping her to win 69 per cent of her service points.

World number 71 Giorgi progressed to the decider with a three-set win over Jessica Pegula in two hours and 11 minutes.

The 6-3 3-6 6-1 win means the Italian qualified for her first career WTA 1000 final.

Giorgi had toppled seventh seed Petra Kvitova, ninth seed Elise Mertens and 15th seed Cori Gauff on her route to the decider.

Local hope and reigning champion Bianca Andreescu blew an early lead as she was toppled by Ons Jabeur in the Round of 16 at the National Bank Open in Montreal.

Tunisian 13th seed Jabeur defeated the Canadian second seed 6-7 (5-7) 6-4 6-1 in two hours and 39 minutes on Thursday.

The come-from-behind triumph was the second time in two matches that the Tunisian has rallied from a set down to win after beating Daria Kasatkina in three.

Jabeur had twice been a break up in the opening set before Andreescu claimed it in an tiebreak.

The 26-year-old Tunisian, who made the Wimbledon quarter-finals this year, responded by breaking at 5-4 to win the second set.

After Andreescu had an injury scare after landing awkwardly on her left foot late in the second set, Jabeur dominated the third, finishing by winning eight of the final nine games.

Jabeur finished with 9-3 aces and was more effective on serve, going at an 81.6 win percentage on her first serve (40 from 49 points).

The lower side of the draw has opened up for the Tunisian who will face Jessica Pegula in the quarter-finals after the unseeded American defeated countrywoman Danielle Collins 6-4 3-6 7-5.

Two-time Wimbledon champion and seventh seed Petra Kvitova was knocked out in a shock by Italian Camila Giorgi in straight sets.

Giorgi, ranked 71st in the world, won 6-4 6-4 in one hour and 36 minutes and will face Cori Gauff in the quarter-finals after she had another walkover against Johanna Konta.

Top seed Aryna Sabalenka had no such problems, cruising past Canadian Rebecca Marino 6-1 6-3 inside an hour.

Sabalenka sets up a quarter-final clash with fellow Belarussian and two-time Australian Open winner Victoria Azarenka.

Azarenka got past Greek 11th seed Maria Sakkari in three sets, 6-4 3-6 7-6 (7-2).

Fourth seed Karolina Pliskova got past Amanda Anisimova 6-1 7-6 (10-8) and will play Sara Sorribes Tormo in the last eight after she won in three sets over Katerina Siniakova.