Daria Kasatkina dug deep to fend off Daria Saville in the Granby Championships final and land the sixth WTA singles title of her career.

World number 10 Kasatkina took a 6-4 6-4 victory in one hour and 53 minutes of hard battle with her great friend, Saville showing resilience despite struggling with an ankle problem.

The outcome made Kasatkina the second Russian winner of the day on the WTA Tour after Liudmila Samsonova took the Tennis In The Land title in Cleveland, Ohio.

Kasatkina, who also won the Silicon Valley Classic in early August, will turn her focus away from a successful week in Canada and towards the US Open, which gets under way in New York on Monday.

The 25-year-old will be targeting a deep run at Flushing Meadows after achieving her best grand slam result in June when she reached the French Open semi-finals, before being prevented from playing Wimbledon due to a blanket ban on players from Russia and Belarus imposed by the All England Club.

In the second set of a gruelling and gripping tussle, Saville looked nailed on to come from 4-1 down to level at 4-4 when she led 40-0 in the eighth game, only for her game to briefly disintegrate, allowing Kasatkina to move 5-3 ahead.

Still, it was an unsteady Kasatkina at the other end of the court, and the Barcelona-based player was broken by Saville when serving for the match.

There was nothing secure about Saville on serve either, and Kasatkina had two match points in the next game at 15-40. She was unable to take either, or the third and fourth that arrived soon after. On her fifth opportunity, Kasatkina was relieved to see Saville hit wide.

Kasatkina begins her US Open campaign against British qualifier Harriet Dart on Monday, while Saville starts on the same day against Romanian Elena-Gabriela Ruse.

Serena and Venus Williams have accepted a wildcard entry to play the women's doubles at the US Open.

The two-time doubles winners at Flushing Meadows are likely to appear at the tournament for the final time in 2022, with Serena having already announced her intentions to soon retire from tennis.

Both sisters have entered the singles draw, with Serena facing Danka Kovinic in round one while Venus begins her campaign against Alison van Uytvanck.

The pair have not played a major doubles event together since the 2018 French Open, suffering defeat in the third round, and were last paired in New York in 2014, when they reached the quarter-finals.

However, the duo boast 14 major doubles titles and three Olympic gold medals together and are to be reunited again after the US Open announced the 14 wildcard pairs for the doubles events on Saturday.

Serena's involvement at the US Open begins on Monday, with Venus following on Tuesday, before the first round of the women's doubles is scheduled for Wednesday and Thursday.

Liudmila Samsonova headed off to the US Open with a second successive title in the bag after sweeping to victory on Saturday at the Tennis In The Land tournament in Cleveland, Ohio.

The Russian scorched to a 6-1 6-3 demolition of Belarusian Aliaksandra Sasnovich, extending her winning streak to 10 matches after winning the Citi Open earlier in August.

Samsonova rolled past the in-form Bernarda Pera for the loss of just three games in the Cleveland semi-finals, before imposing a similarly commanding display on the trophy match against seventh seed Sasnovich.

Just nine places in the world rankings separated the two finalists heading into the final, with Sasnovich at number 36 the higher-placed player, but she could not cope with an opponent who did not lose a set all week.

Indeed, Samsonova only dropped 18 games across five matches, the 23-year-old tying up a third career title on the WTA Tour. Sasnovich has now lost all four of her finals.

At Flushing Meadows, Samsonova begins her campaign against Czech world number 194 Sara Bejlek and could face last year's runner-up Leylah Fernandez in round two.

Both Samsonova and Sasnovich have to play as neutrals for now, being unable to perform under the flags of their home countries because of Russian and Belarusian involvement in the ongoing invasion of Ukraine.

Samsonova said of Saturday's win: "We made a special final. We were both without the flag, so it's special.

"I think it's important to spend a minute to say we are very good people."

There seems to be no escaping the number 23 for Serena Williams as she prepares for an emotional final grand slam at the US Open.

It is 23 years since the legendary American won her first major singles title at Flushing Meadows, where she was also crowned doubles champion back in 1999.

Williams has gone on to win an astonishing 23 grand slam singles titles and 14 major doubles titles in an incredible career that is about to come to an end in New York.

One of the all-time greats turns 42 next month and although she is unlikely to bow out by claiming an elusive 24th major singles title in her home major, she is sure to be given a spine-tingling farewell.

Novak Djokovic's absence due to not being vaccinated against COVID-19 has been the big talking point in the men's singles, with Rafael Nadal getting an opportunity to extend his record tally of major successes.

Stats Perform picks out the standout numbers to preview the final major of the year as Emma Raducanu and Daniil Medvedev prepare to defend their titles.

Serena's incredible longevity

Such is the remarkable longevity of Williams' career, defending champion Raducanu and world number one Iga Swiatek were not even born when she won her first major.

Wimbledon champion Elena Rybakina was only a few months old when the iconic Saginaw native beat Martina Hingis in the 1999 US Open final for the first of so many major titles.

Only Chris Evert can boast as many US Open titles as Williams' tally of six in the Open Era, while she has played in a record 10 finals at Flushing Meadows.

The retiring veteran has 106 victories in her home major, a record in the Open Era, and only Martina Navratilova has recorded more wins in a single major - with 120 at Wimbledon.

Williams will be making her 21st main-draw appearance at the US Open, with only her older sister, Venus, bettering that figure in the Open Era as she prepares for her 23rd.

Long-awaited New York return for Nadal 

Nadal has not played at Flushing Meadows since he was crowned champion for a fourth time three years ago, having missed the 2020 tournament amid the coronavirus pandemic and not played last year due to a foot injury.

The Spanish great's hopes of completing a first calendar Grand Slam were ended by an abdominal injury that resulted in his withdrawal from Wimbledon ahead of a scheduled semi-final against Nick Kyrgios.

He could make it three major titles out of four this year in New York, though, where he will be bidding to take his haul of grand slam titles to 23 and move two clear of the absent Djokovic once again.

If Nadal lifts the trophy on Arthur Ashe Stadium, it would give him a record-equalling fifth US Open men's singles title - matching the haul of Jimmy Connors, Pete Sampras and Roger Federer.

Only Bjorn Borg (89.2 per cent) has a higher winning ratio in grand slam tournaments during the Open Era than Nadal's 88.3 per cent among players with at least 100 victories to their name, 

Another record in women's singles?

Teenage Brit Raducanu made history when she became the first qualifier to win a major title last year, beating Leylah Fernandez in the final.

Swiatek has dominated the women's game for much of this year, the highlight being her second French Open triumph.

With the retired Ash Barty, Swiatek and Rybakina taking the singles titles in 2022, there could be four different gram slam champions for a fifth consecutive season - excluding 2020 - and that would be the longest such streak in the Open Era.

Alcaraz to make major breakthrough?

While Nadal will be the Spaniard with the largest burden of expectation on his shoulders, Carlos Alcaraz should be a big threat in New York.

The 19-year-old could become the fifth player in the Open Era to reach at least the quarter-finals in his first two appearances at Flushing Meadows after Ken Rosewall, Arthur Ashe, John Newcombe and Johan Kriek.

Alcaraz has the joint-most ATP Tour titles this year with four, matching Nadal's tally.

At the age of 16, Serena Williams had a fairly confident grip on how the world saw her, and her older sister Venus.

"A lot of people think that black people can't rally, just think they're athletes and they can't think," Williams said at the 1998 Lipton Championships. "As you can see, that's not true. I can rally, Venus can rally."

And my word, how they could rally. As teenagers, then into their roaring twenties, onward into their thrilling thirties and even after turning 40.

Serena turns 41 next month and will retire after the US Open. She has been a title winner on tour in the 1990s, 2000s, 2010s and 2020s, a beacon to black youngsters with a dream everywhere.

It was a March day in Key Biscayne, Florida, when the teenage Serena floated her belief that racism was already circling the siblings.

She had just lost a deciding-set tie-break to WTA number one Martina Hingis in the quarter-finals of the Florida tournament, missing out on two match points. It was one of those occasions where Williams conceded she "could have rallied a little better".

The 40th-ranked youngster said she would "go home and work on that", and brushed off the missed match points by pointing out Pete Sampras had lost to Wayne Ferreira from the same position.

"Maybe I'm just like Pete. Maybe one day I'll be number one, too," Williams said, presciently.

Eighteen months later, she was the US Open champion, beating Hingis in the title match at Flushing Meadows. Bill Clinton, President of the United States, called after the match ended to offer his congratulations.

In that instant, the 17-year-old Serena said it felt "really amazing", but a day later her mood had darkened. Tennis life and fame was already proving wearing. Dad Richard had groomed the sisters for this life, but Serena, who had to give up her skateboarding hobby because of a wrist injury, realised she had left normal life behind.

"I mean, it's actually impossible for me to go out now," she said. "I can't go anywhere. From the beginning of the tournament, I just can't walk down the street.

"It's the same [at home]. You're driving, people honk their horns. It's actually kind of annoying."

Serena and Venus put up with garbage for many years. Whether it was horns honking, or critics honking, they were frequently served a raw deal.

At Wimbledon in 2000, it was tossed to Serena that "critics" were suggesting she and her sister might not be "as strategically aware as some of the other players", but that they were "incredible athletes with great bodies".

"We definitely have great bodies, yeah. Nice, slim, sexy shapes. They're right," Serena replied, unimpressed.

Later that year, after her US Open defence ended with a quarter-final loss to Lindsay Davenport, Williams discussed opposition to the prospect of sisterly dominance.

"I'm sure a lot of people never want to see an all-Williams final," said Serena. "It's going to happen in the future inevitably. Nobody's going to be able to stop it. Obviously, no one would want to see an all-Williams final because everyone doesn't really like us. That's just the way it is."

Those are depressing words to revisit, and they came as Davenport claimed Hingis had been urging her to beat Serena. Venus went on to beat Davenport in the final.

Yet, as Serena forecast, nobody could stop the sisters' march. Serena and Venus first matched up in a slam final in New York at the 2001 US Open, and Venus got the better of Serena.

They clashed again in five of six slam singles finals from the 2002 French Open through to Wimbledon in 2003, and Serena won every time. Across the next five years, she won a modest – by her astonishing standards – three further slams, but Williams was back at the height of her powers when she won both the Australian Open and Wimbledon in 2009 and 2010.

A near-disastrous accident said to have happened in a Munich restaurant, with Williams standing on some glass, followed just days after Wimbledon, and she did not play another slam until returning to London the following year.

It was there that Williams was handed a Court Two assignment for her second-round clash with a fledgling Simona Halep. I remember being on court that day, puzzled why this sporting colossus was sent out to a court that is seriously modest when matched up to Centre Court and Court One.

"They like to put us on Court Two, me and Venus, for whatever reason," Williams said afterwards. "I haven't figured it out yet. Maybe one day we'll figure it out."

It was put to Serena that the sisters might take it as an insult, given Novak Djokovic and Rafael Nadal tended not to be sent out to Court Two, an awkward spot in the grounds for superstars to reach without causing a fuss.

"Yeah, they're never moved across," said Serena. "I don't make it a big issue. I think at some point maybe I should."

She streaked together three US Open titles from 2012 to 2014, and further Wimbledon triumphs in 2012, 2015 and 2016. It seemed a matter of time before Williams went past Margaret Court's record 24 singles slams, removing any question mark over who is the greatest women's player of all time.

Slam number 23 arrived in Australia while Williams was in the early stage of pregnancy in 2017, and the birth of daughter Olympia was followed by another harrowing health scare.

Williams still reached four more slam finals, going all the way to the title matches at Wimbledon and the US Open in 2018 and 2019, but she could not land the elusive 24th. In fact, she did not win a set in any of those finals.

Defeat to Bianca Andreescu in the 2019 Flushing Meadows title match was hard to take, Williams acknowledged afterwards.

"I honestly don't think Serena showed up," said Williams. "I have to kind of figure out how to get her to show up in grand slam finals."

That was to be her last slam final, barring something most unexpected happening over the coming fortnight.

Serena saw room for improvement, but she 'showed up' more than often enough on the big stage.

She fought racists, sexists, ignoramuses and charlatans to get a foothold on tour, then made a mockery of the "black people can't rally" jibe.

Her 23 singles slams ranks as a record for the sport's Open Era. She has 365 grand slam match wins in singles, 59 more than second-placed Martina Navratilova.

It's one for every day of the year so far, but this great American will want more before that final farewell.

She announced her retirement in Vogue, a power move, just like having the likes of Beyonce, Jay-Z and Meghan Markle in her corner always was.

The pursuit of Court is up; just about, anyway. It probably helps that the likes of Billie Jean King and John McEnroe hold up Williams as the greatest of all time.

After her magazine piece, Williams spoke in Toronto about seeing "a light at the end of the tunnel".

"I can't wait to get to that light," Williams said, being serious but laughing hard.

What does it represent?

"Freedom," said Williams.

Rafael Nadal described Novak Djokovic's absence from the US Open as "very sad" after the Serbian revealed he would not compete at Flushing Meadows.

Djokovic announced he would not be making the trip to New York on Thursday, due to visitors to the United States being required to display proof of vaccination against COVID-19.

The US Open will represent the second grand slam Djokovic has missed this year, after his unvaccinated status saw him deported from Melbourne ahead of the Australian Open in January.

Nadal is one of the most likely players to benefit from Djokovic's absence as he bids to win a 23rd grand slam title, but the Spaniard expressed sympathy for his rival as he prepared to begin his US Open campaign against Rinky Hijikata next week.

"From my personal perspective, it's very sad news," Nadal said. "It's always a shame when the best players in the world are not able to play a tournament because of injuries or because of different reasons.

"It's tough for the fans, tough for the tournament. In my opinion, tough for the players, too, because we want to have the best field possible."

Nadal's clash with Hijikata will represent his first outing at Flushing Meadows since he beat Daniil Medvedev to win the 2019 title, and injuries have caused him to miss four of the last 10 editions of the tournament.

Roger Federer, another of Nadal's great rivals, will also miss the competition after undergoing three knee operations in two years, but the Spaniard believes the major championships can cope with the absences of tennis' aging stars.

"The world of tennis [will] keep going, even if it is not good news for everyone," he added. "The world continues and the tennis will continue after me, after Novak, after Roger.

"Without a doubt, Novak is one of the most important players of the last 20 years, [in] the history of our sport. In a personal way, I feel sorry for him that he's not able to travel here."

Meanwhile, Federer is hoping to return to the court for September's Laver Cup, where he will join Nadal and Djokovic in a star-studded Team Europe line-up, and the Swiss maestro's old foe is desperate to see him make his long-awaited comeback.

"I'm super excited to see Roger again on court, of course," Nadal said. "I hope he's healthy enough to make that happen.

"It has been a long period of time without Roger on court so I really hope that he can manage to be back.

"The most important thing at this stage of his career is the health and the happiness, no? If he's healthy enough and happy enough to be back on the tennis tour, it will be amazing. 

"If not, we can say thanks to him for everything that he achieved. I am confident that we will keep having Roger for a while."

Emma Raducanu played down injury concerns on the eve of the US Open after the defending champion suffered discomfort during practice on Friday.

Raducanu enjoyed a meteoric rise at Flushing Meadows last year, becoming the first qualifier to win a grand slam as she claimed an unexpected victory in New York.

The British number one overcame Leylah Fernandez in last year's final, clinching a breakthrough success after reeling off 10 consecutive wins without dropping a single set.

But her hopes of defending the title appeared under threat when she twice stopped her session with Ekaterina Alexandrova on Friday, being consoled by coach Dmitry Tursunov after appearing upset by pain in her right hand.

Raducanu headed off court for treatment before returning to complete the session, and insists she is not worried by the episode. 

"I had a few small things, got a couple of blisters, a bit of a niggle here and there," she explained. "It's just one of those weird days where you just feel a bit out of it.

"I can't really explain myself, to be honest. I'm sure everyone in this room has probably had a day like that. I have no concerns of an issue, no."

Raducanu has endured an inconsistent year to date, suffering several niggling injuries and posting 13 wins and 15 defeats in 2022.

While the 19-year-old is not looking to inflate expectations ahead of the US Open, she expressed her delight at returning to the scene of her greatest triumph.

"It's really nice to be back in New York," Raducanu added. "It's great for me to come here having done a year on the tour, having played most of the tournaments.

"I'm really happy with what I've done this year and how I've come out of certain situations. I've obviously got amazing memories in New York.

"I think defending a title is just something that the press makes up. I'm just taking it one match at a time. 

"Every single player is very capable in this draw. I just focus on what I'm doing, my own trajectory. As I said last year, I'm just going to do things my way."

Raducanu, who claimed notable victories over Serena Williams and Victoria Azarenka in Cincinnati last week, will face Alize Cornet in the first round at Flushing Meadows. 

It will be an all-unseeded final at the Winston-Salem Open after Adrian Mannarino eliminated Botic van de Zandschulp 6-0 6-4 in the semi-final.

Van de Zandschulp, the tournament's second seed, was the last seeded entrant remaining in the draw.

In a dominant first set, Mannarino won 80 per cent (12-of-15) of his service points to not allow his Dutch opponent any openings, and he took advantage of some sloppy play.

Van de Zandschulp committed four double faults and 16 unforced errors in the opening set, while Mannarino had no double faults and only one unforced error as the 34-year-old played a veteran's game and allowed his opponent to beat himself.

Overall, Van de Zandschulp committed 20 more unforced errors and five more double faults in the loss.

Mannarino will play Serbia's Laslo Djere in the final, with a chance to win his second career ATP Tour title. His sole title came at the Netherlands' Rosmalen Championships back in 2019. He has a career record of 1-9 in finals.

Djere made it through after yet another grinding affair, defeating Switzerland's Marc-Andrea Huesler 7-6 (7-3) 7-6 (7-5) in two hours and 20 minutes.

All five of his wins this week have required over two hours of court time, with this being his first straight sets result.

In a match that saw each player secure one break of serve, Djere was just slightly better throughout, winning 52 per cent (98-of-189) of the total points, while building a 37-24 advantage in the winners category and serving 10 aces to Huesler's four.

Daria Kasatkina has a chance to win her second tournament this month after blowing past Diane Parry 6-2 6-0 in the semi-final of the Granby Championships.

Kasatkina, who beat Shelby Rogers in the final of the Silicon Valley Classic a couple of weeks ago, dominated Parry from the jump with her powerful serve.

Parry did not stand a chance when Kasatkina would land her first serves fair, with the Russian converting 88 per cent (15-of-17) of those opportunities in the opening frame, before winning 92 per cent (12-of-13) of her total service points in the second set.

Kasatkina, who has now collected three straight-sets wins in a row, will face Australia's Daria Saville in the final after her semi-final opponent, Marta Kostyuk, withdrew due to injury.

Meanwhile, at Tennis in the Land, Liudmila Samsonova continued her red-hot form with a 6-1 6-2 semi-final victory over Bernarda Pera to book her place in the final.

Samsonova, who is yet to drop a set at the tournament, dominated both with her serve and in her return game, winning 89 per cent (32-of-36) of her service points and 56 per cent (24-of-43) of her return points. She created nine break point opportunities, while allowing zero.

She will play Aliaksandra Sasnovich in the final after the Belarusian outlasted France's Alize Cornet 6-7 (5-7) 7-5 6-3 in a match that lasted two hours and 53 minutes.

Sasnovich shot herself in the foot early with four double faults in the opening set, but cleaned it up as the match wore on, committing just two the rest of the way.

Serena Williams has made a wise move by asking Rennae Stubbs to help her prepare for a farewell US Open appearance, Chris Evert said on Friday.

Ahead of her 21st singles appearance at Flushing Meadows, Williams has brought in former doubles world number one Stubbs, and has been working closely on court with the Australian.

Stubbs has experience of coaching the likes of Karolina Pliskova, Eugenie Bouchard and Samantha Stosur, and the 51-year-old won six grand slam doubles titles, so knows all about performing on the big stage.

Her fresh input could prove invaluable, Evert believes, with Williams no longer having her long-time coach Patrick Mouratoglou in her corner. He now coaches Simona Halep.

Ahead of Williams' last event before retirement, Evert told ESPN: "I know she's been practising hard for this tournament.

"She has Rennae Stubbs helping her which is a positive thing. Rennae encouraged her to play matches against other women to get a taste of how other women play, because before she was just playing with her coach and not really moving a lot in practice, just hitting a lot of balls that were coming right to her.

"What I think she needs to work on more is playing the other women, knowing their game, moving corner to corner and getting that moving going. That's the only thing that's really preventing her from getting that A or B game at this point."

Williams begins her campaign on Monday against Danka Kovinic of Montenegro, the world number 80 who beat reigning US Open champion Emma Raducanu at this year's Australian Open.

Evert is the only woman in the Open Era (since 1968) to have reached more grand slam singles finals than Williams, one ahead of her fellow American after embarking on 34 runs to title matches.

However, Evert lost 16 of her finals, whereas Williams has been beaten only 10 times in 33 such matches.

The 40-year-old Williams therefore has 23 grand slam singles titles, putting her one short of the all-time record held by Margaret Court, but top of the Open Era list.

Evert does not believe Williams will be turning up purely to say goodbye.

"This is a big tournament for Serena Williams and this is an opportunity for people to really get one last look at her, and that's why everyone's trying to buy a ticket for Monday, Tuesday, Wednesday night," Evert said.

"She's transcended tennis, she's revolutionised tennis with her power game. But also off the court, her fearlessness and ability to just say whatever she wanted to say, not caring what people thought, her honesty, where she came from and how she's dealt with that.

"I feel she has so many different platforms where she's helped women: women who work who have children, women of colour. I can't say enough about the influence she's had on people."

It remains to be seen whether Venus Williams will follow Serena into retirement after the upcoming slam in New York, but few would be surprised.

At the age of 42, seven-time grand slam singles winner Venus would also deserve a rapturous send-off.

"Venus gets overshadowed by little sis," said Evert. "But Venus on her own has established, accomplished so much, won so many grand slams, singles and doubles, and handled this whole sister thing with grace."

Serena Williams' former trainer Rick Macci has branded Novak Djokovic's omission from the US Open as "a joke".

The three-time winner of the US Open announced on Thursday that he would not play in the event this year, having been denied entry to the United States due to vaccination rules.

It is not the first time Djokovic's non-vaccinated status has hindered his grand slam involvement, having been deported ahead of the Australian Open earlier this year.

Djokovic had hoped to be able to feature, with the US Tennis Association saying it would adhere to any policy change by the US government that allowed him to play, but no changes were announced by the CDC.

While the Serbian will be able to feature next year, Macci has hit out at the regulations and believes it is bad for the sport.

"I don't like it, it's bad for tennis. I'm not losing sleep over it but he played last year, COVID was worse," he said.

"He played the year before, COVID was a lot worse. Now it's in the rear-view mirror but he's not vaccinated, they don't let people in the country, it's a joke.

"It makes no sense whatsoever, it's the government. It makes no sense, zero. I don't think tennis has anything to do with it. It's the government, you've got to be vaccinated to come in, it's unfortunate.

"It applies to, in my opinion, not only the best player in the world but many other people that aren't vaccinated, that maybe it affected your business, visiting relatives or whatever it impacted.

"It's just front and centre because Djoker [Djokovic], who I feel will go down as the greatest player ever to hold a racket, if he's allowed to play tournaments.

"It looks like if you don't get vaccinated, who knows where this is going to go. I'm not in favour of it and I think they should have made a special exception, but if they do it for him, they've got to do it for everybody."

Botic van de Zandschulp is the only seeded player remaining at the Winston-Salem Open, advancing to the semi-final after winning a pair of tiebreakers against Benjamin Bonzi 7-6 (8-6) 7-6 (7-1).

Van de Zandschulp, the second seed, is yet to lose a set in the tournament after straight sets wins against Tallon Griekspoor and Jaume Munar, and he used his dominant serve to get the job done against France's Bonzi.

The Dutchman had 15 aces while Bonzi had three, and he posted 50 winners to Bonzi's 24 in a terrific exhibition of power tennis.

Van de Zandschulp, 26, will face Adrian Mannarino in the semi-final as the 34-year-old seeks his second career ATP Tour title, beating Maxime Cressy 6-4 7-6 (7-3).

Fourth seed Cressy was Mannarino's third consecutive seeded scalp, having also defeated ninth seed Emil Ruusuvuori and eighth seed Albert Ramos-Vinolas to make it this far.

Cressy's 10 double faults and 26 unforced errors shot himself in the foot, as the veteran Mannarino played a clean match, posting two double faults and eight unforced errors.

Serbia's Laslo Djere has taken the scenic route to the semi-final, winning his fourth three-set match of the week as he edged past Richard Gasquet 6-4 3-6 7-6 (8-6) in two hours and 43 minutes.

It comes after a three-hour-11-minute marathon against Jason Kubler in the previous round, and a two-hour-50-minute war of attrition against Joao Sousa prior to that.

Djere will hope to have some more gas in the tank when he meets Switzerland's Marc-Andrea Huesler in the semi-final after he upset 13th seed Jack Draper 6-4 6-4.

World number 10 Daria Kasatkina showed why she is the highest ranked player at the Granby Championships, defeating fifth seed Nuria Parrizas-Diaz 6-3 6-2 in convincing fashion.

Kasatkina, who is enjoying a career-high ranking, got the job done in straight sets despite struggling with her serve, committing all nine of the match's double faults.

While she was only able to win a below-par 58 per cent of her service points, she also won 58 per cent of her return points, and it was that ability to deal with the Spaniard's serve that proved to be the difference.

Kasatkina will play France's Diane Parry in the semi-final after she got the better of Germany's Tatjana Maria 6-4 6-7 (6-8) 7-6 (7-4) in a near three-hour tussle.

Parry only had one ace compared to Maria's 10, but she excelled in the longer rallies, with her return success rate jumping up from 16 per cent to 47 per cent when she was able to see a second serve.

Australia's Daria Saville will contest the other semi-final after her 6-3 6-0 domination of China's Xiyu Wang, and she will play Ukraine's Marta Kostyuk after she defeated Canada's Rebecca Marino 6-2 4-6 6-2.

Meanwhile, Liudmila Samsonova continued her terrific run at Tennis in the Land as she beat Magda Linette 6-4 6-3.

Samsonova is yet to lose a set at the tournament, but will face her toughest test next when she meets Bernarda Pera in the semi-final.

Pera, who previously eliminated top seed Barbora Krejcikova in straight sets, came out on top against American compatriot Sofia Kenin 6-2 5-7 6-3, despite creating one fewer break point opportunity.

Alize Cornet is also yet to lose a set on her run to the semi-final, proving too strong for Shuai Zhang 6-4 6-2.

Cornet will play Aliaksandra Sasnovich for a place in the final after the Belarusian pulled away in the second set of her 6-4 6-1 win against American Madison Brengle.

Emma Raducanu is playing better tennis now than when she won the US Open last year, according to six-time major champion Kim Clijsters.

British number one Raducanu enjoyed a meteoric rise at Flushing Meadows last year, becoming the first qualifier to win a grand slam as she claimed an unexpected victory in New York.

She reeled off 10 straight matches without dropping a single set, overcoming the likes of Olympic gold medalist Belinda Bencic and Maria Sakkari before seeing off Leylah Fernandez in the final.

Difficult form and injuries have prevented the 19-year-old from truly building on the momentum of that triumph, though, with the world number 11 boasting a modest 13-15 record in her first full year on the tour.

Nevertheless, she claimed notable victories over Serena Williams and Victoria Azarenka in Cincinnati last week ahead of her US Open title defence, which begins against Alize Cornet in the opening round.

And former world number one Clijsters empathises with Raducanu, who she feels needs time to adjust to life in the higher echelons of the sport.

"She's already done a lot more in the lead-up to the US Open than she did last year, she has beaten a lot of good players," Clijsters told Reuters.

"She is maturing as a tennis player. I think her tennis is better now than it was when she won the US Open.

"When you have such a life-changing experience – and I'm not talking about what happens on the court, but everything else that gets added to that, even if she doesn't change, people around you change.

"People look at you differently. People on the tour look at you differently, whether she goes to a tournament in Luxembourg, or in Australia. Everybody knows her.

"Those big changes in life take time to get used to. It's so unrealistic the expectations that are on her because when you play a sport, you go out there and you have an opponent who's trying to win just as hard as you."

While Clijsters believes the teenager would do well to successfully defend her title, the three-time US Open winner is confident she will embrace the challenge.

"Is she going to win the US Open? It would be incredible if she did, but there's a lot of other players out there who have just as much chance as her," said Clijsters, whose last US Open success came in 2010.

"So, it will just be a matter of seeing whether she deals with that emotion of being at the slam and the expectations of it? She might be super excited to be there, and then play really free and without any pressure."

Serena Williams will face Danka Kovinic in the first round as the American great begins her final US Open campaign.

It will be a final grand slam for 40-year-old Williams, who has won six singles titles in New York and been a runner-up on four occasions.

Her first singles crown in a major came as a 17-year-old at Flushing Meadows, when she beat Martina Hingis in the 1999 final.

Now the end of a glorious career is beckoning for the 23-time singles major winner, who has also landed 16 doubles grand slam titles.

Kovinic is the world number 80 from Montenegro, with the 27-year-old having only won two matches at the US Open in four previous main-draw appearances.

The winner of that match will likely face Estonian second seed Anett Kontaveit in round two. Kontaveit's first-round opponent will be Romanian Jaqueline Adina Cristian.

Defending champion Emma Raducanu, who was a shock winner last year, faces a tricky first-round assignment against France's Alize Cornet.

Cornet is the tour veteran who beat Iga Swiatek at Wimbledon, ending the Pole's 37-match winning streak, and this will be her 64th consecutive grand slam appearance, a record for WTA Tour players.

World number one Swiatek starts against Italian Jasmine Paolini and could face 2017 US Open champion Sloane Stephens in round two.

Former champion Naomi Osaka, unseeded this year, was paired with Danielle Collins, the 19th seed who was an Australian Open runner-up at the start of the year.

The tournament gets under way on Monday.

Men's defending champion Daniil Medvedev faces American Stefan Kozlov in his opener, while Rafael Nadal, who has not lost a grand slam match all year, faces Australian wild card Rinky Hijikata.

Nadal won the Australian Open and French Open titles before pulling out of Wimbledon ahead of his semi-final against Australian Nick Kyrgios due to an abdominal tear.

That handed Kyrgios a bye through to face Novak Djokovic, who got the better of the Australian, but the Serbian must miss the US Open because his refusal to be vaccinated against the COVID-19 virus meant he would not be allowed to enter the United States.

Djokovic's absence was confirmed shortly before the draw was revealed.

Fast-rising Spanish teenager Carlos Alcaraz begins against Argentina's Sebastian Baez, while fourth seed Stefanos Tsitsipas will face a yet-to-be-determined qualifier.