The exodus of seeded players has been so spectacular that only one of the top 10 remains -- number seven Karolina Pliskova.
IMAGES from the US Open matches played on Day 1 at the Flushing Meadows in New York on Monday.
IMAGES from Day 2 of the US Open played at Flushing Meadows in New York on Tuesday.
The hard court, outdoor competition in Lexington, Kentucky, marked the WTA's first tournament in the United States since the coronavirus outbreak forced almost all sport into a long break earlier this year.
Tactical change helps Halep to French Open semis
Angelique Kerber displayed her grit and vaunted fitness as she battled back to beat France's Pauline Parmentier 7-5, 3-6, 7-5 in scorching heat on Monday to reach the fourth round of the BNP Paribas Open.
Osaka, 21, said she lacked maturity when as a relative unknown player she won the tournament last year to kick off her meteoric rise through the rankings.
World No 1 Serena Williams comfortably beat 15-year-old CiCi Bellis.
Penpix of the top women's contenders at the 2021 Australian Open
Naomi Osaka settled her nerves and stepped up her preparations for the Australian Open by beating Alize Cornet 6-2, 6-2 to reach the last 16 of the Gippsland Trophy warm-up tournament in Melbourne on Tuesday.
Round-up of the Rolland Garros tournament being played in Paris.
The players have been allowed out to practise for five hours a day during their quarantine but Djokovic said he had headed to a local park on his first morning in Australia without restrictions.
Sam Stosur powered into the French Open quarter-finals with a 7-6(0), 6-3 win against Simona Halep in Paris on Tuesday, adapting better to damp and heavy conditions than her higher-ranked Romanian opponent.
World No 2 Rafael Nadal brushed aside American Jared Donaldson 6-1, 6-1 and will next face Diego Schwartzman after the Argentine beat Roberto Carballes 6-3, 6-1.
Images from the second day's play of the 2016 French Open at the Roland Garros
Images from Day 7 of the 2019 French Open in Paris on Saturday.
Serena Williams won her 750th career match to stay on track for her ninth Miami Open title when she beat Zarina Diyas of Kazakhstan 7-5 6-3 in the third round in Florida on Saturday. The world number one improved her career record to 750-125, seventh on the all-time list and just three match wins behind Lindsay Davenport's 753. Martina Navratilova sits atop the all-time list with 1,442 wins. The 34-year-old Williams will meet Russian Svetlana Kuznetsova in the fourth round. The 15th seed defeated France's Caroline Garcia 4-6 6-2 7-6(6). Unlike the last time they met, when Williams required 54 minutes and Diyas won just two games, the 22-year-old Kazak gave the American some trouble in the heat and humidity of Miami.
Venus Williams' return to Indian Wells lasted just one match but sister Serena looked poised for a long run after a dominant win at the BNP Paribas Open on Friday. Venus returned to the event for the first time since 2001, having boycotted it after being booed and heckled by fans during her previous trip, but made a quick exit after a 6-4 6-3 defeat to Japanese qualifier Kurumi Nara in the second round. The 15-year-old incident had occurred when Venus withdrew from a semi-final match with Serena, drawing ire from the crowd aimed at the Williams family. This time, though, Venus was greeted warmly by the crowd before her match and throughout it, a consolation for her poor performance. "It was enough of a fairytale to come here and play," Venus told reporters. "A win would have been nice, but that means I have to come back, play next year."
Caroline Woznaicki produced an almost perfect display to dismantle world number one Simona Halep 6-0 6-2 at the WTA Finals on Wednesday, the Dane recording her second dominant victory in as many matches.
Earlier on Wednesday, Czech Karolina Pliskova was forced to withdraw from the tournament due to a viral illness.
Melbourne final feels 'bit unreal' for Japan's Osaka
Serena Williams had to dig deep to fend off Latvian challenger Jelena Ostapenko as she wrapped up Friday's play at the Fed Cup in Seattle with a hard-fought victory that gave the United States a 2-0 advantage. Williams' experience and savvy ways showed in critical moments against the 22-year-old Ostapenko as she prevailed 7-6(4), 7-6(3) in a match that took one hour and 46 minutes.
An FFT statement said it had consulted with the ATP, WTA and International Tennis Federation (ITF) to allow the Roland-Garros showpiece the benefit of an extra week.
Ukrainian second seed Elina Svitolina ended Naomi Osaka's remarkable recent run with a 6-4, 6-2 triumph over the Indian Wells champion in the second round of the Miami Open on Friday.
Naomi Osaka continued her stunning run of form with a 6-3, 6-2 victory over 23-times Grand Slam champion Serena Williams in the first round of the Miami Open on Wednesday, the latest big win for the 20-year-old Japanese player.
Raonic advances, Sock ousted in Rogers Cup
Nadal produced a rich vein of form as he thrashed Greek teenager Stefanos Tsitsipas in straight sets to clinch his fourth Canadian Masters 1000 title at the Rogers Cup
Six times a men's singles champion Down Under, the Serbian will be joined in making a return at MelbournePark by 2008 women's champion Maria Sharapova, who missed last year's tournament because of a doping ban.
He leads the men's seedings ahead of defending champ Roger Federer, with Bulgarian Grigor Dimitrov seeded third.
Australian Open holder Djokovic will make his ATP Cup debut for Serbia against South Africa in Brisbane on Saturday while Nadal will lead Spain into action against Georgia in Perth on the same day.
The 15-year-old's popularity has soared off the charts in a memorable week at the All England Club, with organisers also recognising her potential to grab attention and giving her a Centre Court match-up in the third round.
Spaniard Garbine Muguruza withdraw from the Italian Open semi-finals with a neck injury on Saturday, eight days before she is due to start the defence of her French Open title at Roland Garros.
Images from the matches played on Day eight of the 2018 Australian Open at Melbourne Park on Monday
Images from Day 1 at the Australian Open.
A summary of Day Three's matches at the Wimbledon Championships.
Tennis star Maria Sharapova again tops the list of highest earning female athletes over the past year, according to Forbes.
World number one Simona Halep pulled out of next week's WTA Finals due to a lower back injury.
Canadian tennis player Eugenie Bouchard is undecided about her participation in next month's Rio Olympics over concerns about the Zika virus, the 22-year-old said.
Wimbledon champions and World No 1s Novak Djokovic and Serena Williams head the field for the men's and women's events at this year's US Open.