World number one Ash Barty made serene progress to the fourth round of the Australian Open as Naomi Osaka and Serena Williams suffered shock exits.

Coco Gauff claimed another famous scalp in the form of defending champion Osaka to join Williams' conqueror Qiang Wang in the next round.

In a mixed day for the American contingent, Alison Riske and Sofia Kenin also went through, but Madison Keys was knocked out in straight sets.

Petra Kvitova was in commanding form as she progressed, while Caroline Wozniacki saw her career come to an end with defeat.

OSAKA DEFENCE ENDS AS SERENA WAIT GOES ON

Gauff got revenge for a rout at the hands of Osaka at the US Open last year to claim the biggest win of her fledgling career, seeing off the number three seed 6-3 6-4.

Beaten 6-3 6-0 in just 65 minutes at Flushing Meadows, 15-year-old Gauff made the most of 30 unforced errors from her opponent to set up a meeting with compatriot Kenin, who defeated Shuai Zhang 7-5 7-6 (9-7).

Williams' wait for a 24th grand slam singles title goes on, the American beaten in 6-4 6-7 (2-7) 7-5 by Wang in a gripping encounter.

The 38-year-old, who hit 56 unforced errors to Wang's 20, confessed afterwards: "I just made far too many errors to be a professional athlete today."

OMINOUS SIGNS FROM BARTY AND KVITOVA

There were no such concerns for Barty, who dispatched Elena Rybakina 6-3 6-2 in 78 minutes.

The home favourite will face Riske in the fourth round, the American outlasting Julia Goerges 1-6 7-6 (7-4) 6-2.

Last year's runner-up Petra Kvitova progressed in similarly imperious fashion, seeing off Russian Ekaterina Alexandrova 6-1 6-2.

Kvitova, who is yet to drop a set at this year's event, will now face Maria Sakkari after her impressive 6-4 6-4 defeat of Keys.

 

TEARFUL WOZNIACKI BOWS OUT

Former world number one Wozniacki saw her career come to an end with a three-set defeat to Ons Jabeur.

The 2018 champion lost 7-5 3-6 7-5 to the Tunisian, who will play a fourth-round match at a major for the first time against Wang.

An emotional Wozniacki, who fought back from 3-0 down in the decider but was decisively broken in the 11th game, said afterwards: "I want to be out there fighting. I fought like my life depended on it."

Ash Barty and Serena Williams moved through at the Australian Open as Naomi Osaka and Coco Gauff set up a third-round showdown.

Home favourite and world number one Barty was untroubled on Rod Laver Arena on Wednesday, continuing her run in Melbourne.

Williams was below her best but still advanced during the night session as her bid for a record-equalling 24th grand slam title continued.

There is also the prospect of a mouthwatering showdown between two of the game's leading lights on Friday.

 

BARTY, SERENA UNTROUBLED

Barty brushed past Slovenian Polona Hercog 6-1 6-4 in just 66 minutes on the back of a consistent performance.

The Australian mixed 16 winners – nine of those from the forehand side – with 16 unforced errors, setting up a clash with Kazakh 29th seed Elena Rybakina.

Williams was left frustrated during the second set of her 6-2 6-3 victory over Tamara Zidansek.

The American star was pushed before advancing in one hour, 18 minutes, having committed 28 unforced errors, including 17 in the second set.

Next up for Williams is Wang Qiang, the Chinese 27th seed having rushed past Fiona Ferro 6-1 6-2.

 

OSAKA, GAUFF SET UP BLOCKBUSTER CLASH

Osaka's title defence stayed alive with a 6-2 6-4 victory over China's Zheng Saisai.

The Japanese third seed faces her biggest test yet in the third round, where Gauff awaits after the teenager's comeback win.

Gauff looked set for an exit, trailing Sorana Cirstea 3-0 in the final set.

But the 15-year-old fought back to claim a 4-6 6-3 7-5 victory and reach the third round at a grand slam for the third straight time.

Osaka crushed Gauff 6-3 6-0 when the pair met at last year's US Open.

 

WOZNIACKI STAYS ALIVE AS KVITOVA, KEYS ADVANCE

Caroline Wozniacki stretched her professional career for at least another match by beating Ukrainian 23rd seed Dayana Yastremska 7-5 7-5.

The 2018 Australian Open champion, who is retiring at the end of the tournament, came from 5-1 down in the first set and 3-0 behind in the second.

Last year's runner-up, Petra Kvitova, was tested in a 7-5 7-5 victory over Spain's Paula Badosa while Madison Keys also had moments of concern in her 7-6 (7-3) 6-2 win over Arantxa Rus.

Petra Martic (13) and Aryna Sabalenka (11) were among the seeds to fall, with the latter beaten by Carla Suarez Navarro in their opening-round clash.

Simona Halep and Karolina Pliskova came through their first-round matches at the Australian Open, as Maria Sharapova suffered an early exit in the women's singles.

Fourth seed Halep was handed a testing opener against Jennifer Brady, who had beaten Ash Barty at the Brisbane International this month.

But the Romanian prevailed 7-6 (7-5) 6-1 in one hour and 36 minutes to join home hope Barty, defending champion Naomi Osaka and tournament favourite Serena Williams in round two.

An up-and-down first set was crucial, as Halep twice recovered from a break down and saved three set points while Brady was serving at 6-5.

Halep found a way to force a tie-break and then edged it 7-5 before running away with the contest in the second set.

Wimbledon champion Halep also had to overcome a first-set fall that required the trainer to check on her wrist and joked she had also stumbled in her first match of the 2018 tournament, when she made it all the way to the final.

"In 2018 it was the same, probably I can repeat that!" said Halep.

"I don't know why in the first round always I fall down. Maybe it's a good sign but it's too far to think about that.

"My wrist is pretty painful. I need to chill and recover for the second round."

Second seed Pliskova earned a 6-1 7-5 victory over Kristina Mladenovic, losing serve just once in the 87-minute battle. The Czech faces Laura Siegemund next, while Halep will take on Harriet Dart.


TOP 10 ALL THROUGH AS SHARAPOVA'S WOES CONTINUE

Sharapova suffered her third consecutive loss in the first round of a grand slam following a 6-3 6-4 defeat against 19th seed Donna Vekic as the former world number one hit 31 unforced errors.

A first-round casualty at Wimbledon and the US Open, Sharapova - who has been struggling for form and fitness - crashed out in the first round of the Australian Open for the first time since 2010.

Sixth seed Belinda Bencic won 6-3 7-5 against Anna Karolina Schmiedlova, while Madison Keys was a 6-3 6-1 victor against Daria Kasatkina, as all of the top 10 seeds moved safely into round two.

Elina Svitolina claimed a 6-4 7-5 victory in her match against Katie Boulter, while former grand slam champions Angelique Kerber and Garbine Muguruza were winners against Elisabetta Cocciaretto and Shelby Rogers respectively. Muguruza won by an unusual 0-6 6-1 6-0 scoreline.


KONTA AND VONDROUSOVA BOW OUT

Johanna Konta, Marketa Vondrousova, Amanda Anisimova and Anastasija Sevastova were the seeds to fall on day two.

An Australian Open semi-finalist in 2016, British 12th seed Konta suffered a 6-4 6-2 loss to Ons Jabeur.

On the comeback trail following a tendinitis-related problem in her right knee, which forced her to withdraw from Brisbane and Adelaide, Konta was only making her second appearance since losing in the US Open quarter-finals last year.

Konta said: "Ultimately the main thing was to start playing again, and I am. How I physically felt out there is obviously a massive tick for me compared to where I was in September. Before Brisbane I had been out for almost four-and-a-half months."

Czech Vondrousova, the 15th seed and French Open finalist last year, lost in three sets to Russian veteran Svetlana Kuznetsova.

Another rising star fell as 18-year-old American Anisimova lost out in a final set to Zarina Diyas, while home hope Ajla Tomljanovic emphatically accounted for Sevastova with a 6-1 6-1 triumph to book a round-two meeting with Muguruza.

Former world number one Serena Williams claimed her first WTA Tour title in three years after winning the Auckland Open on Sunday.

Not since winning the 2017 Australian Open had Williams clinched silverware – the 23-time grand slam champion a runner-up at Wimbledon (2018 and 2019) and the US Open (2018 and 2019), while she retired in the 2019 Rogers Cup final.

However, Williams ended her drought by defeating fellow American Jessica Pegula 6-3 6-4 in the women's final in New Zealand.

"It feels good. It's been a long time. I think you could see the relief on my face," Williams said during her on-court interview before announcing she will donate her prize money (and a dress from each of her matches) to the bushfire relief effort in Australia.

Williams was almost flawless against Pegula, stepping up her preparations for the upcoming Australian Open with two aces and just one break of serve to capture her 73rd WTA crown – a record stretching across four decades after winning her first in 1999.

After a sluggish start, which saw the top seed fall 3-1 behind in the opening set, Williams eventually found her range en route to the 38-year-old's first trophy as a mother.

After snapping a sequence of five defeats in finals since her 2017 triumph at the Australian Open, Williams will look to equal Margaret Court's record of 24 slam titles at Melbourne Park.

Meanwhile, defending champion and second seed Karolina Pliskova won the Brisbane International for a second straight year after outlasting Madison Keys in three sets.

Pliskova prevailed 6-4 4-6 7-5 over eighth seed Keys for her third victory at the WTA Premier event in Brisbane.

Serena Williams was in brilliant form to reach the Auckland Open final, while Karolina Pliskova saved a match point to beat Naomi Osaka in a thrilling Brisbane International semi.

Williams needed just 44 minutes to crush 18-year-old Amanda Anisimova 6-1 6-1 in their last four clash at the WTA International tournament in New Zealand.

The 23-time grand slam champion mixed 17 winners with six unforced errors and lost just nine points on serve. Williams served five aces and converted all five of her break points in a dominant display in the lead up to the year's first grand slam in Melbourne.

The American moved into her 98th WTA Tour final and will be aiming for a 73rd title but first since the 2017 Australian Open when she faces Jessica Pegula.

Pegula upset fifth seed Caroline Wozniacki 3-6 6-4 6-0 in their semi-final.

A two-time runner-up, Wozniacki – who will retire after the 2020 Australian Open – won just 10 points in the third set.

Wozniacki will contest the doubles final with Williams against Taylor Townsend and Asia Muhammad.

In Brisbane, Pliskova lost a first set on a tie-break in which she squandered two set points and saved four, and was staring down the barrel after Osaka broke for a 6-5 lead in the second.

However, Osaka's first serve on match point was overly tentative and a series of errors handed Pliskova the break back. The second seed took full advantage, winning the subsequent tie-break and taking the decider in comfortable fashion to defeat the reigning Australian Open champion 6-7 (10-12) 7-6 (7-3) 6-2.

Earlier, Madison Keys rallied past Petra Kvitova to clinch a 3-6 6-2 6-3 victory, meaning there will be no all-Czech final in Queensland.

At the Shenzhen Open, Russian Ekaterina Alexandrova clinched her maiden WTA Tour title with a 6-2 6-4 win over Elena Rybakina in the final.

Eugenie Bouchard served up a reminder of the ability that briefly looked set to make her a tennis superstar by powering through to the Auckland Classic quarter-finals.

The Canadian was a Wimbledon finalist six years ago and looked to have the world at her feet, only for results to drastically tail off.

She endured a wretched 13-match losing streak last season and began this week's tournament in New Zealand as the world number 262, having once been as high as fifth.

But there is still time for 25-year-old Bouchard to turn around her faltering tennis career, and a 6-4 6-4 victory over French eighth seed Caroline Garcia was an eye-catching result.

She and Garcia clattered a host of sparkling winners but each set ended the same way, with former world number four Garcia sending backhand service returns too long.

Playing on a wildcard invitation, Bouchard will next face American Amanda Anisimova, an 18-year-old who has shot up to 25th in the WTA rankings.

Anisimova saw off Russian Daria Kasatkina 6-2 6-4 to reach the last eight, teeing up a first meeting with Bouchard.

"Definitely she's playing well," Anisimova said of Bouchard. "It should be exciting to play another new player."

Alize Cornet and Jessica Pegula also won through to the last eight in Auckland.

Spain's former French Open and Wimbledon champion Garbine Muguruza battled through to the Shenzhen Open quarter-finals, beating American Shelby Rogers 6-1 7-6 (7-2) to set up a shot at Kazakhstan's Zarina Diyas.

Seeds Wang Qiang and Ekaterina Alexandrova also advanced, and will go head to head on Thursday for a semi-final ticket.

Wednesday was a dominant day for the American contingent at the Brisbane International, with Madison Keys, Danielle Collins and Alison Riske all scoring straight-sets wins.

Keys beat Australian Samantha Stosur 7-5 6-3, Collins landed a crushing 6-1 6-0 victory over Kazakhstan's Yulia Putintseva, and Riske scored a 6-3 6-4 success against Czech Barbora Strycova.

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