The decision to ban Russian and Belarusian players from Wimbledon is "unfair" and sets a "damaging precedent for the game", the ATP has warned.

An announcement on the grand slam's official website on Wednesday stated that Russian and Belarusian competitors would be barred from the championships, as well as from any other events organised by the Lawn Tennis Association (LTA) this year.

"In the circumstances of such unjustified and unprecedented military aggression, it would be unacceptable for the Russian regime to derive any benefits from the involvement of Russian or Belarusian players with The Championships. It is therefore our intention, with deep regret, to decline entries from Russian and Belarusian players to The Championships 2022," the statement read.

ATP world number two Daniil Medvedev and WTA world number four Aryna Sabalenka headline the list of players who will miss out on the year's third grand slam as a result of the announcement.

The ATP has now hit out at the ban, labelling it "unfair" and discriminatory, while continuing to pledge solidarity with the people of Ukraine.

"We strongly condemn Russia's reprehensible invasion of Ukraine and stand in solidarity with the millions of innocent people affected by the ongoing war," began a press release from the ATP.

"Our sport is proud to operate on the fundamental principles of merit and fairness, where players compete as individuals to earn their place in tournaments based on the ATP Rankings. 

"We believe that today's unilateral decision by Wimbledon and the LTA to exclude players from Russia and Belarus from this year's British grass-court swing is unfair and has the potential to set a damaging precedent for the game. 

"Discrimination based on nationality also constitutes a violation of our agreement with Wimbledon that states that player entry is based solely on ATP Rankings. Any course of action in response to this decision will now be assessed in consultation with our Board and Member councils.

"It is important to stress that players from Russia and Belarus will continue to be allowed to compete at ATP events under a neutral flag, a position that has until now been shared across professional tennis. 

"In parallel, we will continue our joint humanitarian support for Ukraine under Tennis Plays for Peace."

The unilateral announcement from Wimbledon's organisers comes after Russian and Belarusian players were originally allowed to play under neutral flags amidst Russia's invasion of Ukraine, courtesy of a joint ruling from the four grand slams and the ATP and WTA Tours.

Elina Svitolina has called for Russian and Belarusian players to be banned from all international tennis events unless they denounce the invasion in Ukraine.

The All England Club on Wednesday announced that players from Russia and Belarus will not be allowed to compete at Wimbledon due to the conflict in Ukraine.

Daniil Medvedev, Aryna Sabalenka, Victoria Azarenka and Andrey Rublev are among the household names that will not be allowed to compete in the grass-court grand slam, "unless circumstances change materially between now and June".

Russian and Belarusian players will also be prevented from entering all other events organised by the Lawn Tennis Association.

Two-time major semi-finalist and former world number three Svitolina believes a global ban should be imposed on players from Russia and Belarus if they do not speak out.

The Ukrainian former world number three posted on Twitter and Instagram: "Dear Tennis Community.

"Ginetta Sagan once said: 'Silence in the face of injustice is complicity with the oppressor.' This could not be any more true right now.

"On 24th February 2022, Russia, with the support of Belarus, attacked Ukraine. Now there is a war in our country, in our home. All Ukrainians are forced to leave their homes and fight for their lives. For over 50 days now, the Russian forces have been bombing our cities and killing civilians, as well as using the territory of Belarus to bomb Ukraine from the west and the north.

"Millions of people have been left homeless, millions of children now know what explosions, fear and death look like. It is all happening right now in the centre of Europe.

"As athletes we live a life in the public eye and therefore have an enormous responsibility. Some of our posts and opinions on social media reach an audience larger than those of regional television stations. In times of crisis, silence means agreeing with what is happening.

"We noticed that some Russian and Belarusian players at some point vaguely mentioned the war, but never clearly stating that Russia and Belarus started it on the territory of Ukraine. The very silence of those who choose to remain that way right now is unbearable as it leads to the continuation of murder in our homeland.

"We demand that the WTA, ATP and ITF make sure the players who represent Russia and Belarus answer the following questions:

"1. Do you support Russia's and Belarus invasion in Ukraine's territory and as a result of that the war started by those countries?

"2. Do you support Russia's and Belarus military activities in Ukraine?

"3. Do you support [Russian president Vladimir] Putin's and [Belarus president Alexander] Lukashenko's regime?

"If applicable, we demand to exclude and ban Russian and Belarusian athletes from competing in any international event, as Wimbledon already [has] done. There come a time when silence is betrayal, and that time is now."

Daniil Medvedev headlines the list of Russian and Belarusian players who will be banned from competing at Wimbledon this year.

In the wake of Russia's invasion of Ukraine, which was facilitated by Belarus, the four grand slams and the ATP and WTA Tours initially confirmed Russian and Belarusian players would be able to continue playing, albeit under neutral flags.

However, the All England Club has now decided athletes from the two nations will be unable to feature at the season's third grand slam.

That means reigning US Open champion Medvedev, ranked second in the world by the ATP behind Novak Djokovic, will not be involved.

With Medvedev a doubt for the French Open having undergone hernia surgery, he could miss two of this year's majors. He has never had much success at Wimbledon, with his best run ending in the fourth round in 2021.

WTA world number four Aryna Sabalenka, who hails from Belarus, is another big name to miss out, along with Russian ATP world number eight Andrey Rublev, who has won two titles so far in 2022.

Russian women's number one Anastasia Pavlyuchenkova, compatriot and 2018 Wimbledon quarter-finalist Daria Kasatkina and Belarusian two-time All England Club semi-finalist Victoria Azarenka will all also be absent.

"We share in the universal condemnation of Russia's illegal actions and have carefully considered the situation in the context of our duties to the players, to our community and to the broader UK public as a British sporting institution," a statement on the official Wimbledon website read.

"We have also taken into account guidance set out by the UK Government specifically in relation to sporting bodies and events.

"In the circumstances of such unjustified and unprecedented military aggression, it would be unacceptable for the Russian regime to derive any benefits from the involvement of Russian or Belarusian players with The Championships. It is therefore our intention, with deep regret, to decline entries from Russian and Belarusian players to The Championships 2022."

Chairman of the All England Club, Ian Hewitt, said: "We recognise that this is hard on the individuals affected, and it is with sadness that they will suffer for the actions of the leaders of the Russian regime.

"We have very carefully considered the alternative measures that might be taken within the UK Government guidance but, given the high profile environment of The Championships, the importance of not allowing sport to be used to promote the Russian regime and our broader concerns for public and player (including family) safety, we do not believe it is viable to proceed on any other basis at The Championships."

Wimbledon's statement confirmed that the ban would be "reconsidered" should circumstances change by June.

The move comes a month after UK sports minister Nigel Huddleston warned Medvedev and other Russian athletes they might be banned from Wimbledon unless they denounced president Vladimir Putin.

Medvedev and Rublev both called for peace in the immediate aftermath of Russia's attack on Ukraine.

Cristian Garin was on the end of a shock thrashing by Denmark's Holger Rune in the first round of the Serbia Open on Monday.

The Chilean fifth seed, who was the highest-ranked player in action, is regarded as one of the ATP Tour's best on clay but hardly got a look-in as 18-year-old Rune emerged with an impressive 6-3 6-1 win.

Rune has risen to a career-high 72 in the ATP rankings and showed every sign that he will continue to climb over the season as he produced an aggressive performance that saw him take six of 17 break points.

Playing in only his fifth ATP Tour match on clay, Rune needed just an hour and 25 minutes to see off Garin – the winner of five tour-level titles on the surface – and set up a second-round clash with either Dusan Lajovic or Taro Daniel.

Sixth and seventh seeds Fabio Fognini and Miomir Kecmanovic avoided similar shocks, though their respective wins were wildly different.

Kecmanovic crushed veteran Richard Gasquet 6-0 6-3, while Fognini was forced to overturn a one-set deficit in his defeat of fellow Italian Marco Cecchinato 6-7 (5-7) 6-2 6-2.

No seeds were in action at the Barcelona Open, but Italian prospect Lorenzo Musetti enjoyed a hard-fought 7-5 7-5 defeat of Argentina's Sebastian Baez to seal his spot in the second round.

The 20-year-old is now 5-2 for the clay season and will go up against Dan Evans next. Joining Musetti in progressing is another promising youngster in Brandon Nakashima, who beat Nicolas Alvarez Varona 7-6 (8-6) 6-3 to tee up a clash with number two seed Casper Ruud.

Mackenzie McDonald, Elias Ymer, Kwon Soon-woo and Federico Coria were among the other victors, while retiring 2004 champion Tommy Robredo bowed out with a 6-1 6-1 loss to Bernabe Zapata Miralles.

World number one Novak Djokovic explained that he could just not get up to the level of sharpness required in his shock defeat at the Monte Carlo Masters.

Djokovic slumped out in the second round on Tuesday when he lost 6-3 6-7 (5-7) 6-1 to world number 46 Alejandro Davidovich Fokina.

The Serbian's status as an unvaccinated player has limited his ability to compete on the ATP Tour this year and he has played in just one tournament so far, getting to the quarter-finals in Dubai. 

Yet his preparations for the French Open, which starts at the end of next month, hardly got off to a good start as he made 51 unforced errors in what was still, despite his rustiness, a surprise defeat.

"I didn't like the way I felt physically in the third. I just ran out of the gas completely," Djokovic told the media. 

"Just couldn't really stay in the rally with him. I mean, if you can't stay in the rally, not feeling your legs on the clay, it's mission impossible.

"I'm going to look with my team into reasons why that was the case and go back to the drawing board. Hopefully next week will be better in Belgrade."

Though Djokovic has won twice in Monte Carlo, it has not been a happy hunting ground for him in recent years. He has not advanced past the quarter-final stage since 2015.

He added: "It's going to take some time for me to really feel my best on the clay.

"That's historically always been the case. [I have] never played very well in the opening tournaments of the clay season.

"But it's okay. Obviously it is what it is. I have to accept the defeat and keep working."

While unhappy with his own performance, Djokovic had nothing but praise for his opponent. 

"I would like to congratulate Alejandro. He was the better player," Djokovic said. "He managed to find a better rhythm I think in the first two sets. I was hanging on the ropes the entire match. I was really chasing the result constantly.

"I always believed that I could come back and win the match, and I stayed there even though a lot of things were against me in terms of how I felt on the court. Game-wise, physically I was just far from my best.

"I expected this match to be [a] really tough match, [a] physical battle, and that's what it was. Unfortunately I'm on the shorter end of the stick, and my week ends here."

Djokovic's defeat also means a mouthwatering contest with teenager sensation Carlos Alcaraz, who he might have met in the quarter-finals, will not be taking place.

Carlos Alcaraz is hopeful of meeting Novak Djokovic in the Monte-Carlo Masters, but his first focus is on a second-round tie with Sebastian Korda. 

Alcaraz is one of the brightest prospects on the ATP Tour, with the 18-year-old Spaniard having won his first Masters title at the Miami Open and become the youngest men's champion of that tournament. 

That was Alcaraz's second title of 2022 and third overall. He is now up to 11th in the ATP world rankings. 

Seeded eighth, Alcaraz has been handed a bye to the second round but is in the same quarter of the draw as world number one Djokovic, who has triumphed twice in Monte Carlo. 

Alcaraz, though, is making sure not to get ahead of himself and think too much about a maiden meeting with Djokovic, with American Korda – who defeated Botic van de Zandschulp in his first-round match – first up. 

"I don't want to be in a rush, I just focus on the first [match]," Alcaraz told reporters ahead of what is a rematch of the Next Gen ATP Finals championship match which he won in straight sets. 

"Obviously, it would be a great match against Novak. 

"Playing against the number one player in the world [would be] amazing for me, but I hope to play well in the first [matches] and hope to meet him in the quarter-finals." 

Alcaraz seems set to have a future at the very top of the game but is insisting everything must be taken step by step. 

"Sometimes it is difficult, but I am trying to make it easy," he said. 

"Doing everything for the first time, I am trying my best, trying to manage the nerves of the first time well." 

Taylor Fritz, who won a Masters title at Indian Wells earlier this year, could also be standing in the way of Alcaraz and the quarter-finals, should the American defeat wildcard Lucas Catarina and Marin Cilic. 

Djokovic, on the other hand, faces Alejandro Davidovich Fokina in his first match. 

Stan Wawrinka's ATP Tour return at the Monte-Carlo Masters ended in defeat, while Jannik Sinner came through a tense encounter with Borna Coric. 

The former world number three made his comeback after more than a year out with a left foot injury that required two surgeries but fell to a 3-6 7-5 6-2 defeat to Alexander Bublik in the first round. 

Wawrinka, who entered the tournament as a wildcard having slipped to 236 in the world rankings, came from a break down to take the opening set but fatigue eventually set in and he was eliminated after two hours and seven minutes. 

"I think the body's getting much better," said Wawrinka, who lost in straight sets to Elias Ymer at a Challenger tournament in Marbella two weeks ago. 

"I'm still far away from where I want to be, but I think I'm [going in] the right direction. I think today was a positive match. It was a tough loss, of course, but I'm happy with the way I was playing today. 

"I was playing better, feeling better on the court physically. I spent a lot of mental energy to focus, to stay there as it was tough at the end. But I'm happy with what I have done."

Ninth seed Sinner was taken the distance by Coric before completing a 6-3 2-6 6-3 victory to advance to the second round. 

Sinner took a medical timeout in the second set while he dealt with some apparent abdominal pain, but he was able to battle back and take the win. 

Diego Schwartzman needed over three hours to come from behind and defeat Karen Khachanov 6-7 (5-7) 6-3 6-3, while his fellow Argentine Federico Delbonis set up a clash with second seed Alexander Zverev by besting Jaume Munar 6-4 3-6 6-4. 

Reigning champion Stefanos Tsitsipas faces a meeting with Fabio Fognini in the second round after the Italian overcame Arthur Rinderknech 7-5 4-6 6-3.  

There were also wins for Hubert Hurkacz, Pablo Carreno Busta, Marin Cilic, Alex de Minaur, Albert Ramos-Vinolas and Sebastian Korda. 

American Reilly Opelka defeated compatriot John Isner 6-3 7-6 (9-7) to win a history-making final of the US Men's Clay Court Championships in Houston.

In a clash between two of the tour's elite servers, and two of the tallest men to ever play professional tennis, break points were hard to come by, and even harder to convert, as Opelka saved all eight opportunities he faced, while Isner saved four out of five.

That one break decided the first set, as 6ft 10in Isner fought back from 40-0 down to force deuce, but the fourth break point of the game was converted by 6ft 11in rival Opelka.

The ATP said their respective heights made it the tallest tour final in the Open Era.

In a match that was always likely to be decided by whoever served best, Opelka had five aces to Isner's two in the first set, while Isner also had the only double fault.

Isner was much stronger in the second set, creating seven break-point opportunities, but he just could not win the important points as Opelka's serve repeatedly got him out of trouble.

Isner then had three opportunities at set point in the tie-break to force a decider, but it was Opelka's day, as he saved all three and converted his first chance at match point.

After dropping a set in his first-round match against Mitchell Krueger, Opelka was perfect the rest of the tournament, beating Gijs Brouwer and Nick Kyrgios in straight sets on his way to the final.

Reilly Opelka and John Isner will meet in the US Men's Clay Court Championship final in Houston, after they claimed semi-final wins on Saturday.

Opelka kept up his strong early-season form with an imposing 6-3 7-5 victory over Nick Kyrgios in the first semi-final, getting the job done in just one hour and nine minutes.

Opelka slung down 18 aces to 11 from Kyrgios and faced only one break point across the contest.

The 24-year-old Opelka won a title in Dallas in February and followed up with a run to the Delray Beach final, with a third trophy match of the season now awaiting him.

The American world number 18 said he admired the "intangibles" from Kyrgios that "you can't teach."

"He's got one of the best serves in the world and when he turns it on he can come up with some shots that not many guys outside the top 10 can," Opelka said in his on-court interview.

Opelka enjoyed the high-tempo match with Kyrgios, who typically wastes no time between points.

"I prefer to play at that speed rather than, for example, Rafa [Nadal] where it's 50-55 seconds between points," Opelka said.

"It's a totally different speed here and I thought I did a good job managing the whole tempo of the match. I put a lot of returns into play and I came up big with my second serve."

He will face 2013 Houston champion Isner, who came from a set down to defeat defending champion Cristian Garin 4-6 6-3 6-4.

The 36-year-old's serve improved as the match went on and ultimately propelled him to victory, facing four break points in the opening set, one in the second and none in the decider.

Isner also served 17 aces on his way to the final, and won 80 per cent of points on his first serve.

"It's never easy when you have to come back from one set down," he said. "My serve certainly helped me out a lot. I didn't have to hit too many balls there in the end, and I didn't want to.

"I'm so happy to be in the final again here. At my age you never really know when you can get back to a final of a tournament like this."

World number 18 Reilly Opelka is through to the semi-final of the US Men's Clay Court Championships in Houston after defeating qualifier Gijs Brouwer 6-3 7-5.

The giant American, who measures in at six-foot-11, was terrific in the opening set, winning 84 per cent of his successful first serves (16-19) and allowing no break point opportunities.

The second set was much more competitive, as Brouwer broke first to go up 3-1, but Opelka answered instantly and then grabbed the match-winning break when 6-5 up to avoid a tie-breaker.

Opelka will face a fresh Nick Kyrgios in the semi-final after the Australian was gifted a walkover win against Michael Mmoh due to injury.

In a clash between two top-five seeds, world number 29 Christian Garin got the better of world number 13 Taylor Fritz 6-2 6-7 (5-7) 6-3.

What made Garin successful in the first and third sets was his return game, winning more than half of his return points in those sets combined (26-51).

Fritz had chances to get back into the game, but Garin saved 11 of 14 break point opportunities, including six of seven in the deciding third set.

Garin will play American John Isner in the semi-final after Isner triumphed in a three-set battle against Frances Tiafoe 6-4 2-6 6-3.

Isner's trademark serve was inconsistent, and abandoned him in a grim second-set performance, winning just 11 of 21 service points on his way to getting broken twice to allow Tiafoe to force the match into a third frame.

In Isner's two successful sets, he won more than 80 per cent of his first serves (35-41), and allowed no break point opportunities in the third.

Taylor Fritz saw his way past Alejandro Tabilo to advance to the quarter-finals at the US Men's Clay Court Championships, winning 6-1 6-4 on Thursday.

Fresh off his maiden ATP 1000 title at Indian Wells and fourth-round run in Miami, the American world number 13 needed just 62 minutes to win in straight sets, in his first clay court match for the season.

Fritz's serve was not particularly secure, though, with the unseeded Tabilo converting on only one of six break point attempts. Fritz was more efficient and assertive when opportunities presented on the other hand, taking two of three break point chances on Tabilo's serve while winning 12 out of 19 points returning on his second serve.

Despite the Chilean world number 100 fighting back to 4-4 from 3-0 down in the second set, Fritz steadied to close out the match.

"I felt like tonight was going to be a really tough match, given he's done really well on clay," Fritz said post-match. "It was my first match [on clay]. I'm pretty happy with how I played. I can't complain, I got out of that pretty solid."

Fritz will now face another Chilean, fifth seed and defending champion Cristian Garin, who came back from a set down to defeat Jordan Thompson 3-6 6-3 6-3.

Entering the Houston event on a five-match losing streak, Garin has come from behind in back-to-back matches to win.

Sixth seed Frances Tiafoe also went the distance on Thursday, earning a 5-7 7-5 7-6 (7-4) win over Uruguayan Pablo Cuevas.

With neither garnering break point chances in the third set, Tiafoe finally created breathing room by winning four straight points at 2-2 in the deciding tie-break, before closing out the match.

It sets up an all-American quarter-final with John Isner, who defeated Steve Johnson 6-7 (1-7) 7-6 (7-4) 6-3 in Thursday's final game.

Dominic Thiem is ready to "get back on track" after testing negative for coronavirus.

The luckless Austrian revealed he had contracted COVID-19 after making a long-awaited return in the Andalucia Open Challenger Tour event last week.

Thiem has not played on the ATP Tour since last June, missing Wimbledon and the US Open in 2021 after undergoing wrist surgery.

The 2020 US Open champion, who was beaten by Pedro Cachin on his comeback in Marbella, on Thursday stated that he is now COVID-free.

"A short update: I am finally negative and I feel much better! Thank you for all your messages! I really appreciate it!" he tweeted.

"I'm going to have a medical check-up, so I can get back on track!"

Thiem has reportedly pulled out of the Monte Carlo Masters this week, but his return to the ATP Tour should be imminent with the French Open on the horizon next month.

Matteo Berrettini could miss the French Open after the world number six was forced to withdraw from three tournaments as he continues to recover from minor hand surgery.

The Italian progressed to the Wimbledon final in 2021 and started the new season in encouraging fashion as he reached the Australian Open semi-finals, where he was well-beaten by eventual winner Rafael Nadal.

However, the 25-year-old has seemingly struggled from then on, with his next best performance coming in Rio – where he made the last eight – as he limped to a 9-6 record so far in 2022.

Further difficulties followed for Berrettini after he sustained an injury to his right hand late in March, forcing him to withdraw from the Miami Open before undergoing a "minor operation".

Berrettini provided another update on Instagram on Thursday, revealing he would not feature at the Monte-Carlo Masters, scheduled to start later this week, or the Madrid Open and Italian Open at the start of May.

The latter tournament in Rome begins just two weeks before the second grand slam of the year, leading to concerns that Berrettini may not feature at Roland Garros.

"UPDATE – following advice from the medical experts, my team and I have decided that it is crucial I do not put time pressure on my recovery process," he posted.

"We have therefore decided I should withdraw from the Monte-Carlo, Madrid and Rome tournaments to ensure I give myself the proper amount of time to return at my highest level.

"Withdrawing from these events, particularly Rome, was an extremely tough decision, however it is the right one to ensure many more years of competing at the highest level for the biggest trophies.

"Thanks very much for all the support. My recovery process is on track and I look forward to seeing you on-court soon."

The 2022 French Open will provide Jo-Wilfried Tsonga with a final opportunity to shine in front of a home crowd after the 36-year-old confirmed his impending retirement.

Tsonga has suffered with injuries over recent seasons and has managed just two ATP Tour match wins so far in 2022.

The Frenchman reached a high ranking of world number five and finished as runner-up at the 2008 Australian Open.

He never won a grand slam but did reach five more major semi-finals. Tsonga has collected 18 singles titles on the ATP Tour, including two Masters 1000 crowns in Paris (2008) and Toronto (2014). His last triumph came in 2019 in Metz.

"It is with great emotion that I announce today my decision to stop my professional career at the next French Open," Tsonga wrote on social media.

"So many incredible moments, so much joy shared with a public that gave me a lot. Hoping for one last thrill with you!"

In a video accompanying his announcement, Tsonga said: "The goal is to be myself, to be Jo-Wilfried Tsonga the tennis player.

"I hope that I will stay in shape before and be able to be who I have always been at this tournament.

"I have always set myself high goals to try to get what I can. For me, this will be the opportunity to do it one last time."

Yannick Noah (69.6 per cent) is the only Frenchman to have a higher winning percentage in tour-level matches than Tsonga (66.5).

Nick Kyrgios continued his strong return to clay courts on Wednesday, defeating Tommy Paul 6-4 6-2 to progress to the quarter-finals of the US Men's Clay Court Championships in Houston.

Before Tuesday's victory over Mackenzie McDonald, Kyrgios had not played on clay since his infamous meltdown against Casper Ruud at the Rome Masters in 2019, where he threw a chair across the court and walked off during a change of ends.

The 26-year-old Australian wild card's serve kept him in relative control, saving all six break points he faced in the 70-minute match, as well as serving 10 aces and winning 88 per cent of points on his first serve.

"I had to be locked in today and I knew that I had to serve well," Kyrgios said post-match. "It's probably one of the better matches I've played on clay in my career, so I'm pretty happy with the way I came out here today, just put my head down and went to work.

"I've been serving really well, so I just wanted to keep to good habits."

The world number 94 will now face Michael Mmoh, who defeated Sam Querrey 6-2 6-4.

Meanwhile, third seed Reilly Opelka did it relatively tougher in the other all-American clash on Wednesday, coming back from a set down to defeat Mitchell Kreuger 3-6 6-2 6-4.

Opelka came into the match having lost just 13 service games in 19 matches this season, but was broken twice in the opening set against Krueger. The world number 18 has been dealing with a right shoulder injury that forced him to retire at the Miami Open against Francisco Cerundolo.

The 24-year-old still managed 15 aces for the match, including a big serve out wide in the Ad court on match point.

"He played well, I think he came out swinging," Opelka said afterwards. "I think he was free, I wasn't. It's a different situation.

"It was a good opportunity for him to play free and get a win and I'm a guy who hasn't always been the most consistent, especially changing surfaces, so I think it was a good win."

He will face Gijs Brouwer, who progressed past J.J. Wolf with a 6-1 6-1 win.