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.

Iga Swiatek is still a standout candidate to win the US Open, even if the WTA field has plenty of strength in depth, so says Laura Robson.

The latest iteration of the season's final grand slam gets under way on August 29, with Emma Raducanu looking to mount a successful defence at Flushing Meadows.

But with six different winners in the last eight WTA majors, the race is wide open to take glory in New York, particularly after three-time major winner Ash Barty called time on her career following this year's Australian Open.

That leaves former British number one Robson feeling any title fight is too tough to call, though she believes the strength of the field makes it all the more thrilling and unpredictable.

"I think it just shows that there's a lot of depth on the WTA side," she told Stats Perform. "You've got 15 players in any given slam [who could win], which for me makes it more exciting.

"I'm pumped when I see the draw come out, because things can open up so quickly. Had Ash Barty not retired earlier this year, then she probably would have been the front runner going into the rest of the season.

"It really could be anyone. Ons Jabeur is playing great tennis, [Elena] Rybakina and then [Paula] Badosa, on hardcourts is playing great as well."

Robson acknowledged it is tough to look past world number one Swiatek, though. The Pole claimed her second French Open crown earlier this year and has won 50 matches in 2022.

"She just looked like she was on fire," Robson added, before suggesting Swiatek's defeat at Wimbledon to Alize Cornet came merely because "she just ran out of gas".

"I think she's going to transition a little slower on to the hard courts then at the US Open. They're not quite the same surface that works best for her game.

"But at the same time, you know, she's got so much confidence at the moment that you can't really bet against her."

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Bernarda Pera stunned former French Open champion Barbora Krejcikova at Tennis in the Land as the top three seeds tumbled out in Cleveland.

Pera has enjoyed an excellent 2022, winning her first career WTA title in Budapest and then following that up with her second at the Hamburg European Open.

And the Croatian-born American is two wins away from a third final after thrashing top seed Krejcikova 6-4 6-1.

It sets up an enticing last-eight clash with another former grand slam champion in compatriot Sofia Kenin.

Second seed Martina Trevisan from her clash with Zhang Shuai, while third seed Ekaterina Alexandrova lost 3-6 7-5 7-5 to Maidson Brengle.

Some high seeds also tumbled out at the Granby Championships.

Third seed Jasmine Paolini surrendered a lead in a three-set loss to Rebecca Marino and there were also defeats for fourth seed Anna Bondar and eighth seed Tereza Martincova to Tatjana Maria and Diane Parry respectively.

Marta Kostyuk, the 10th seed, had to come from a set down to beat Marina Stakusic but ninth seed Daria Saville lost just one game in her demolition of Katherine Sebov, winning 6-1 6-0.

Victoria Azarenka will not play in the Tennis Plays for Peace Exhibition at Flushing Meadows on Wednesday, the United States Tennis Association (USTA) has announced.

The former world number one was due to participate in the charity event set up in support of Ukraine ahead of next week's US Open.

The Belarusian's involvement in the exhibition came under scrutiny from Ukrainian player Marta Kostyuk, who subsequently declined the opportunity to compete alongside the likes of Rafael Nadal, Iga Swiatek and John McEnroe.

Azarenka had called for player unity following Russia's Belarus-assisted invasion of Ukraine earlier this year, with the two-time Australian Open winner saying Wimbledon's ban on Russian and Belarusian players made no sense.

Following the recent criticism led by Kostyuk, who was bemused by the presence of Azarenka, the USTA decided it would be in the best interest of the event if she was not involved.

In a statement, the governing body said: "In the last 24 hours, after careful consideration and dialogue with all parties involved, Victoria Azarenka will not be participating in our 'Tennis Plays for Peace Exhibition' this evening [Wednesday].

"Vika is a strong player leader and we appreciate her willingness to participate. Given the sensitivities to Ukrainian players, and the ongoing conflict, we believe this is the right course of action for us."

Emma Raducanu is making a "natural transition" to the WTA Tour, says former British number one Laura Robson.

Raducanu became a grand slam winner in just her second major appearance when she defeated fellow teenager Leylah Fernandez in last year's US Open final, and the first qualifier to win the women's singles at Flushing Meadows.

Since then, the 19-year-old has cracked the top 10 of the WTA Rankings, but has otherwise endured a mixed run of form, with a last-16 exit in the Western and Southern Open her latest result ahead of a return to New York, while she has also changed coaches in a season that has so far failed to produce a trophy.

But Robson thinks they are mere teething troubles for Raducanu, arguing that her difficulties have been blown out of proportion.

"I wouldn't say she struggled," Robson told Stats Perform. "I think she's making it a natural transition to the main tour.

"Emma came through so quickly, then struggling to catch up to the day-to-day life of being a professional tennis player, which is a lot of time away from home, a lot of training weeks, a lot of travel.

"She hasn't been able to put that time in. I thought she played great last week in Washington, and unfortunately, had a very tough draw against Camila Georgi in the first round last night.

"But I think she's playing some great tennis. So, I feel when she's back on the courts at US Open, they really suit her and hopefully some positive vibes will help as well."

Robson, a former Junior Wimbledon champion in 2008, won the WTA Newcomer of the Year prize in 2012 after claiming a silver medal alongside Andy Murray in the mixed doubles at London 2012, but ultimately struggled with a succession of injuries before her retirement this year.

She is loathe to draw parallels between her own experiences and those of Raducanu but hopes time can be afforded to the youngster.

"I mean, I wouldn't even compare my situation to hers, because Emma came through so quickly that it feels like she's only just catching her breath," she added.

"She just needs time to manage her own expectations. I hope she's not even thinking about anyone else's expectations because they really don't matter in the grand scheme of things.

"I think she just needs a good amount of training work, which I know she has been doing anyway. And the results will come because they think she's an incredible ball striker and a great athlete as well."

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Three-time grand slam champion Angelique Kerber has announced she is pregnant and will miss the US Open as "two against one just isn't a fair competition."

The former world number one on Wednesday revealed she will not be around on the WTA Tour "for a while", as she is expecting her first child.

Kerber, 34, says she is "nervous and excited" by the "new path" she is heading in.

The German posted on Instagram: "I really wanted to play the @usopen but eventually I decided that two against one just isn't a fair competition.

"For the next months, I will take a break from traveling the globe as a tennis player but then again, I believe it’s for the best possible reason! I will miss all of you.

"New York has often been a turning point in my career and it feels like this year will be no different in some way! From restarting my career in 2011 to winning the title in 2016 and becoming #1 in the world… the @usopen have a special place in my heart and I wish I could have said goodbye to all of you on court before not being around on tour for a while.

"Being a professional athlete means everything to me but I'm grateful for the new path I'm heading to. To be honest, I'm nervous and excited at the same time. Thanks for your continued support - it means everything to me "

Kerber's announcement came just five days before the US Open gets under way at Flushing Meadows.

The left-hander was crowned champion in New York six years ago after also winning the Australian Open in 2016 and she went on to take the Wimbledon title in 2018.

Aliaksandra Sasnovich was the top seed to advance in Tuesday's action at Tennis in the Land, treating the Cleveland crowd to a two-and-half-hour battle before prevailing 4-6 6-3 6-3 against Sara Sorribes Tormo.

In a close contest, Belarus' Sasnovich took advantage in the big moments, winning five of her 10 break point opportunities, while Sorribes Tormo could only convert two-of-nine.

While seventh seed Sasnovich was the highest-seeded winner on the day, fifth seed Irina-Camelia Begu fell victim to a shock 6-3 6-2 upset from world number 415 Sofia Kenin.

Kenin, a wildcard, now advances to the quarter-finals after winning two matches in a row for the first time since January, and prior to this week she had lost her previous nine matches.

Alize Cornet will likely meet second seed Martina Trevisan in the quarter-final after a strong 6-3 7-6 (7-1) triumph against Denmark's rising 19-year-old talent Clara Tauson.

Liudmila Samsonova needed only 59 minutes to breeze past Iryna Shymanovich 6-1 6-0, and it was similarly smooth sailing for Magda Linette as she defeated Sorana Cirstea 6-4 6-2.

Meanwhile, at the Granby Championships in Canada, only one match was able to finish before the rain halted the rest of the day's play.

Spain's Nuria Parrizas-Diaz was too much for England's Harriet Dart, winning 6-2 6-4, while top seed Daria Kasatkina will just need to add the finishing touches when she resumes her match against Magdalena Frech, leading 6-3 5-0.

Retiring legend Serena Williams has indicated she "will always have some sort of involvement" in tennis as she prepares for the US Open, in what will be the final Grand Slam of her career.

The 40-year-old has won 23 major singles titles, while also adding 14 doubles championships in a brilliant career, but will be hanging up her racquet after she plays in the tournament she has won six times.

Her first time lifting the US Open trophy came in 1999, but even after spending over two decades at the top level of the sport, Williams says she will continue to be active in tennis.

"I will never retire from something I absolutely love," the American told Meghan Markle on the Duchess' new Spotify podcast.

"I will always have some sort of involvement in it. Maybe not professionally, but I will always want to be involved in some form in tennis. Obviously, I’ve retired professionally, but it’s also an evolution."

Williams also outlined her plans for the future, adding: "I really want to expand my family, and you know I’ve been putting it off for so long.

"As a woman, there’s only so long you can put that off and other people out there, other men out there, can continue to play. My best is being a mom; I think I can do really good at that."

Fellow tennis legend John McEnroe has heaped praise on Williams ahead of the tournament at Flushing Meadows, commenting: "The way that she moves the needle when she plays, it's like Tiger Woods and golf.

"You can look at the accomplishments, she has the Grand Slam victories. Off the court, I know that she's had a lot of difficulties in her life that she talks about in her own documentaries, but she has come out the other end as this icon, global superstar.

"Her story alone, what she represents as someone who's an African-American girl who came from a tough situation, and became the greatest player that ever lived. What that represents for us, and maybe around the world, is an opportunity that it can happen to anyone potentially."

Retiring legend Serena Williams has indicated she "will always have some sort of involvement" in tennis as she prepares for the US Open, in what will be the final Grand Slam of her career.

The 40-year-old has won 23 major singles titles, while also adding 14 doubles championships in a brilliant career, but will be hanging up her racquet after she plays in the tournament she has won six times.

Her first time lifting the US Open trophy came in 1999, but even after spending over two decades at the top level of the sport, Williams says she will continue to be active in tennis.

"I will never retire from something I absolutely love," the American told Meghan Markle on the Duchess' new Spotify podcast.

"I will always have some sort of involvement in it. Maybe not professionally, but I will always want to be involved in some form in tennis. Obviously, I’ve retired professionally, but it’s also an evolution."

Williams also outlined her plans for the future, adding: "I really want to expand my family, and you know I’ve been putting it off for so long.

"As a woman, there’s only so long you can put that off and other people out there, other men out there, can continue to play. My best is being a mom; I think I can do really good at that."

Fellow tennis legend John McEnroe has heaped praise on Williams ahead of the tournament at Flushing Meadows, commenting: "The way that she moves the needle when she plays, it's like Tiger Woods and golf.

"You can look at the accomplishments, she has the Grand Slam victories. Off the court, I know that she's had a lot of difficulties in her life that she talks about in her own documentaries, but she has come out the other end as this icon, global superstar.

"Her story alone, what she represents as someone who's an African-American girl who came from a tough situation, and became the greatest player that ever lived. What that represents for us, and maybe around the world, is an opportunity that it can happen to anyone potentially."

Former Australian Open champion Sofia Kenin claimed her first victory since January at Tennis in the Land on Monday.

Kenin, who has struggled mightily with illness and injury since her triumph in Melbourne in 2020, has seen her ranking drop to 415 in the world.

She had lost her last nine matches but was back to winning ways in Cleveland, where Kenin earned a 6-4 6-3 win over qualifier Dalayna Hewitt in an all-American clash.

Bernarda Pera and Madison Brengle gave the home fans plenty to cheer about with first-round victories, while Lauren Davis came up short in three sets against third seed Ekaterina Alexandrova.

Seeds Martina Trevisan, Aliaksandra Sasnovich and Alize Cornet all sealed wins, the latter thrashing Dayana Yastremska for the loss of just three games.

At the Granby Championships, top seed Daria Kasatkina had to come from a set down to beat Greet Minnen 6-7 (4-7) 6-4 6-2 in just under three hours.

Seventh seed Kaja Juvan lost to 17-year-old Cadence Brace but seeds Jasmine Paolini, Anna Bondar, Nuria Parrizas Diaz, Tereza Martincova and Marta Kostyuk all emerged victorious.

Petra Kvitova fended off home favourite Madison Keys to reach the Western and Southern Open final and secure a return to the world's top 20.

The two-time Wimbledon champion battled to a 6-7 (6-8) 6-4 6-3 victory in two hours and 18 minutes, saying the match had been "mentally so tough".

Both players had taken significant scalps to reach this stage, with Keys knocking out world number one Iga Swiatek and Kvitova ousting Wimbledon runner-up Ons Jabeur.

Kvitova reached semi-finals at Cincinnati in 2012 and 2018 and lost three-set battles on both occasions, but this time she came good in the decider to earn a first final appearance at the event and a 40th overall in her WTA career.

The 32-year-old Czech slipped an early break adrift in the opening set before fighting back to force a tie-break. She came from behind in that, too, to level up at 6-6, only for hard-hitting American Keys to win the next two points, the first with a sizzling backhand winner.

Kvitova sensed she was still firmly in the match, however, and surges to 3-1 in each of the next two sets provided the platform to fully turn around the contest.

A 12th WTA 1000-level final awaits her, and she will go to 20th in the rankings should she lose Sunday's final and up to 15th if she carries off the title.

Kvitova said of her win: "It was incredibly tough. I expected it would be tough, but I didn't expect it that tough. Madison played unbelievable.

"She played an amazing tie-break, but I tried to keep going, be there and be a little calmer than before and wait for the chances. It was an incredible match, and I'm really happy that I made it somehow.

"I don't really care about the ranking. Being in the final, that's more important, and that's why I'm playing tennis: to be in finals and fighting for a trophy."

She awaited the winner of the second semi-final between Aryna Sabalenka and Caroline Garcia.