Novak Djokovic says he has "nothing but respect" for Rafael Nadal as the Spaniard strives to create "even more of a successful legacy".

Nadal now has 22 majors to his name after winning the Australian Open and French Open this year – two more than Djokovic and Swiss great Roger Federer.

Victory at the French Open earlier in June was Nadal's 14th at Roland Garros, which is a whopping eight more than anyone else in the open era.

Djokovic, who kicks off his bid for a fourth consecutive Wimbledon title against Kwon Soon-woo on Monday, is in awe of Nadal's achievements, describing the 36-year-old as an "amazing champion".

"He had a surgery in the second part of the last year and coming back after that and winning a grand slam right away is something that is really impressive," the Serbian told a media conference on Saturday.

"[He is] making history with grand slam wins and at Roland Garros, the tournament where he has won most titles.

"Just for what he has achieved, keeps on doing on the court; he has a great fighting spirit, and he is an amazing champion.

"Just in general, the things he is trying to do to create even more of a successful legacy is something you have to respect and admire even though I am one of his biggest rivals. I have nothing but respect for what he has achieved."

Djokovic's refusal to get a COVID-19 vaccination has hampered his playing time this year, yet the 35-year-old is confident that will not hold him back as he bids for a seventh title at The All England Club.

"I didn't have any lead up tournaments but I've had success at Wimbledon before without having any official matches," he added.

"I had success with adapting quickly to the surface so there is no reason to believe why I cannot do it again. I'm very pleased and happy to be back at the tournament that was always my childhood dream, the one I wanted to win. Hopefully I continue that run.

"I would love to be in the position to fight for another trophy, I would like to be in the last match and eventually make history at this tournament.

"As a seven, eight-year-old boy I dreamed of winning Wimbledon and becoming number one. That was the biggest motivation I had as a kid.

"Pete Sampras, when he won his first Wimbledon, was the first tennis I watched on the TV. Pete has won it seven times. Hopefully I can do the same this year."

Novak Djokovic has accepted it is unlikely he will play at the US Open, as the Wimbledon top seed insisted he has not changed his mind on the COVID-19 vaccination.

Djokovic was unable to compete at the Australian Open earlier in 2022 after he was deported – following a drawn-out legal case with Australia's federal government – for not being vaccinated against coronavirus.

The Serbian has spoken out against mandatory vaccinations and when asked on Saturday by reporters at Wimbledon if he had closed his mind to the idea of being vaccinated before the US Open begins, he said "yes".

That means, as it stands, Djokovic will be unable to enter the United States due to being unvaccinated.

However, while frustrated that he will likely miss out on another grand slam this year, the 35-year-old suggested he is now even more motivated to go on and win Wimbledon for a seventh time, which would take him level with Pete Sampras and behind only Roger Federer, who has eight All England Club titles to his name.

Djokovic told reporters: "As of today I'm not allowed to enter the States under these circumstances. That is an extra motivation to do well here.

"Hopefully I can have a very good tournament as I have done in the last three editions. Then I'll have to wait and see.

"I'd love to go to the States but as of today that's not possible. There's not much I can do any more. It's up to the U.S. government on whether they allow unvaccinated people to go into the country."

Djokovic was at the centre of the controversy ahead of the season's first major, but the third grand slam of 2022 has been contentious for other reasons.

The All England Club made the decision to ban all Russian and Belarusian players, including men's world number one Daniil Medvedev, from competing, due to Russia's invasion of Ukraine. The call received criticism and, as a result, Wimbledon has been stripped of any ranking points by the WTA and ATP.

However, Djokovic is no longer as concerned about those points as he once was, as he instead looks to move back to within one major title of Rafael Nadal, whose tally stands at 22.

"I don't want to say ranking points are not important for me, of course they are, but they are not as important as they were for me," he said.

"Now I'm not really chasing the ranking as much as I have. I was breaking the record for longest weeks at number one and after that it wasn't as important for me in terms of priority.

"Of course, I understand that 90 per cent of players will be more affected by the points. Of course this year I did not have the chance to defend 4,000 points in Australia but my priorities now are different so I’m not as affected."

Djokovic, though, does feel it is harsh that Russian and Belarusian athletes are unable to play at SW19.

He said: "I just don't see how they have contributed to anything that has happened. I don't feel it’s fair. 

"I feel like they deserve to win, compete, they are professional athletes. None of them have supported any war or anything like that. 

"I understand both sides. It's hard to say what is right and wrong. Putting myself in a position where someone would ban me from playing because of circumstances that I have not contributed – I do not think that is fair."

Six-time champion Novak Djokovic will take centre stage on day one at Wimbledon along with home hopes Emma Raducanu and Andy Murray.

The All England Club has announced the schedule of play for Monday, when the 2022 tournament will get under way.

As is tradition for the defending champion, Djokovic, who defeated Matteo Berrettini in last year's men's singles final, will take part in the first match on Centre Court when he plays against Kwon Soon-woo.

Djokovic will be bidding for a fourth Wimbledon title in succession following triumphs in 2018, 2019 and 2021, after the cancellation of the 2020 championships.

US Open champion Raducanu has also been selected to appear at Centre Court on the opening day.

Raducanu will take on Alison Van Uytvanck hoping to kick off a successful campaign in front of her home crowd, having burst onto the scene at Wimbledon last year with a shock run to the fourth round.

And another Briton, two-time winner Andy Murray, will be involved in the third and final match on the prestigious court when he faces James Duckworth of Australia.

Murray will be hoping to better last year's third-round berth at SW19 after impressively reaching the Stuttgart Open final this month, losing to Berrettini after notable wins over Stefanos Tsitsipas and Nick Kyrgios.

Ons Jabeur, Angelique Kerber and Carlos Alcaraz are the big names selected for action on Court One on Monday.

And it has been confirmed that, in the absence of retired champion Ash Barty, women's number one seed Iga Swiatek will open the action on Centre Court on Tuesday when she plays Jana Fett. Swiatek said she felt "very privileged" to be opening the proceedings on day two.

Rafael Nadal, who has won the opening two men's grand slams this year, is also expected to begin his campaign on day two, as is seven-time women’s champion Serena Williams on her return from injury.

Rafael Nadal does not know how long his troublesome foot will hold up and cannot be "super happy" while the threat of injury lingers, but he is ready to attack Wimbledon.

Nadal, the 22-time major champion, is halfway to a calendar Grand Slam, having won the Australian Open and French Open.

Yet those successes have come despite a long-term foot problem he has battled, requiring pain-killing injections before every match at Roland Garros.

Nadal's Wimbledon participation was in question for some time, but he underwent two courses of radiofrequency injections in a bid to ease the pain and be fit enough to challenge at the All England Club.

That is now the case, he says, even if he has to accept his status is unpredictable day to day.

"It's obvious that if I am here, it's because things are going better," the Spaniard told a news conference. "If not, I would not be here.

"So I'm quite happy about [how] the things have evolved. I can't be super happy because I don't know what can happen.

"First of all, I can walk normal most of the days, almost every single day. That's for me the main issue. When I wake up, I don't have this pain that I was having for the last year and a half, so I'm quite happy about that.

"And second thing: practising. I have been overall better.

"Since the last two weeks, I didn't have one day of these terrible days that I can't move at all. Of course, [some] days are better; [some] days are little bit worse."

He added: "I can't tell you if I'm going to be in that positive moment for one week, for two days, or for three months.

"Of course, the treatment that I did didn't fix my injury. It is not improving my injury at all but can take out a little bit the pain. That's the main goal.

"Sometimes the things in the medical world, mathematics is not predictable 100 per cent.

"But in theory, that can help the foot because it's about the nerve. You touch the nerve, so then the nerve is like asleep in some way for a while, but then recovers.

"So how long the nerve is going to be that way, I can't tell you. It's something that we need to discover."

Taylor Fritz earned his third ATP Tour title and second at the Eastbourne International as he defeated fellow American Maxime Cressy 6-2 6-7 (4-7) 7-6 (7-4) in Saturday's final.

Three years on from Fritz's breakthrough tour triumph against Sam Querrey – another compatriot – at the same event, the world number 24 was celebrating again in the last tournament before Wimbledon.

Paris-born opponent Cressy had defeated a trio of home hopefuls in succession in Britons Dan Evans, Cameron Norrie and Jack Draper to reach this stage, but Fritz had just too much.

While the Indian Wells Masters champion had not lost a break all week and maintained that record through the decider, he was taken all the way.

"I played about as well as I could possibly play today, and it still came down to the final couple of points," Fritz said afterwards. "It couldn't have been much closer."

That had not appeared likely after an opener in which Fritz's return game dominated 6ft 6in serve-and-volley specialist Cressy, who was broken immediately following a double-fault.

That was one of four in the first set – as many as in three against Draper – as Cressy won just half of his service points, broken again to love.

Yet neither player faced another break point, with a pair of tie-breaks required to settle the title.

The first went the way of Cressy, forcing a decider as a pair of powerful forehands finally broke down Fritz, but he required treatment between sets and had clearly tired by the closing stages.

The latest in a series of Fritz lobs proved beyond Cressy, not that the result should have come as any surprise – improving the champion's career record in deciding tie-breaks to an astonishing 20-3.

Stefanos Tsitsipas claimed the first grass-court title of his career as he edged Roberto Bautista Agut in the Mallorca Open final.

Playing in his fourth final of 2022, Tsitsipas looked to have victory in his grasp when he broke for a 3-1 lead in the decisive set.

He surrendered his initiative when he was broken while serving for the match at 5-3.

However, Tsitsipas made no mistake in the eventual tie-break, surging to a 6-4 3-6 7-6 (7-2) victory.

The win secured Tsitsipas' second title of the year following his May success in Monte Carlo.

Tsitsipas will hope his performance on the grass in Mallorca translates to a strong performance at Wimbledon, where he has gone past the first round only once.

He will face Alexander Ritschard in the first round at the All England Club on Tuesday.

Rafael Nadal is halfway to a calendar Grand Slam, a feat that would mark the crowning point of any player's career.

Yet the Spanish great does not have to look far back into history to see how quickly that dream can be scuppered, with Novak Djokovic having fallen agonisingly short of a sweep of all four majors only last year.

As perhaps the most grounded player in tennis, Nadal heads into Wimbledon well aware that winning the first two majors of the year is no guarantee of any future success.

At the age of 36, and with a foot problem that requires careful maintenance, it would be arguably the most remarkable feat in the Open Era if Nadal were to add the Wimbledon and US Open titles to his Australian Open and French Open triumphs.

Such dominance is scarce in tennis, and Rod Laver was the last player to scoop all four men's singles titles at the majors, all the way back in 1969.

Steffi Graf won all four on the women's side in 1988, and it seemed a knock-in that Serena Williams would do likewise in 2015 when she headed to the US Open with three majors already bagged.

But Williams famously came unstuck when she faced Roberta Vinci in the semi-finals, while Djokovic went even closer in 2021, losing to Daniil Medvedev in the final at Flushing Meadows.

Here, Stats Perform examines the daunting challenge of scooping all four slams consecutively.

WHAT THE GREAT CHAMPIONS SAY

Before tennis reached its Open Era, which marked the dawning of professionalism on the tour, Laver won his first calendar Grand Slam in 1962.

He said later, quoted by the Tennis Hall of Fame: "It was a thrill to come off the court knowing I had won all four majors in one year. But I never felt like I was the best, never felt that way. I just happened to have a good year."

His 1969 dominance came a year after Laver returned to the majors, following a five-year exile while he played professional tennis elsewhere. When the majors allowed professionals to compete alongside the amateurs, 'Rocket Rod' was again unstoppable.

Laver turned 31 in 1969 and did not win any further grand slam singles titles in his career after that astonishing season, but that second perfect season sealed his legacy as an all-time great.

Stefan Edberg won a boys' singles clean sweep in 1983, but Laver remains the only player to win the men's singles full set in a calendar year since American Don Budge captured all four in the 1938 season, the first time it was achieved by a man. Maureen Connolly and Margaret Court achieved calendar Grand Slams in women's singles in 1953 and 1970 respectively.

A non-calendar Grand Slam was accomplished by Djokovic, when he won Wimbledon, the US Open, Australian Open and French Open consecutively across the 2015 and 2016 seasons. Yet no man other than Laver, Budge and Djokovic has won all four singles crowns in succession.

It has been 11 years since Nadal himself went close. He went to the Australian Open in 2011 with the Roland Garros, Wimbledon and US Open trophies in the bag, looking to complete the set.

"I am sure it's going to be the only one opportunity that I'm going to have in my life," said Nadal that year. "I'm not going to have more of these opportunities to win all four in a row.

"I think it is almost impossible. It is very, very difficult, no? Tennis is a very competitive sport and there is not a lot of difference between players. So a lot of matches are decided in a few balls. So for that reason it is very difficult to have one player winning everything. That's the truth."

Nadal, hampered by injury, lost in the Melbourne quarter-finals to David Ferrer in 2011 and had not won back-to-back slams since, until this year's surprise double. 

REACHING PRESSURE POINT

It is too soon to think that Nadal has a glorious chance to land all four big ones this year. After all, although he has won Wimbledon twice before, those triumphs came in 2008 and 2010, and he has a chronic foot problem. He has required radiofrequency ablation treatment in the past fortnight, preventing nerves in his foot sending messages to his brain.

He fell to Djokovic in the 2011 Wimbledon final and has not been back to the title match since, suffering a run of disappointing early exits in London before reaching semi-finals in 2018 and 2019, his last visits to the tournament.

Djokovic is a heavy favourite for this year's title, but it would be bold to entirely rule out Nadal, particularly given that as the second seed he cannot run into Djokovic until the final. Particularly given that he is Rafael Nadal, and prone to doing stupendous things.

Serbian Djokovic, a year Nadal's junior, would be able to tell his great rival just how intense the strain can become when a calendar Grand Slam becomes a serious prospect.

Speaking in November last year, two months after Medvedev denied him in New York, Djokovic said: "I'm very relieved that the grand slam season was done, because I felt a tremendous pressure unlike anything I felt in my life.

"It was an interesting experience, and I'm very satisfied with the way I played in grand slams, three wins and a final. There are much more positive things to be grateful for and to look at than negative."

Like Djokovic, Serena Williams has managed the non-calendar Grand Slam before, with the American first achieving that from the French Open in 2002 to the Australian Open in 2003, and in 2015 she was aiming for five slams in a row when she arrived at the US Open, having begun her dominant streak at her home grand slam the previous year.

That would have meant Williams sealed each of the 2015 slams, and losing to Vinci led to stark frustration, underlined by a terse response to the question of how disappointed she felt by the result.

"I don't want to talk about how disappointing it is for me," Williams said. "If you have any other questions, I'm open for that."

Sometimes, players get ahead of themselves when looking at the season ahead, and Naomi Osaka had a calendar Grand Slam in her thoughts after winning the season-opening Australian Open in 2019.

She had also triumphed at the US Open at the end of 2018, and the Japanese star was beginning to think she might enjoy an invincible year at the majors, only to stumble to a third-round French Open defeat to Katerina Siniakova.

Osaka said: "I think I was overthinking this calendar slam. For me this is something that I have wanted to do forever, but I have to think about it like if it was that easy, everyone would have done it."

Roberto Bautista Agut stands in the way of Stefanos Tsitsipas and his first grass-court title.

Making his debut at the Mallorca Championships, Tsitsipas sealed his maiden appearance in a grass-court final by cruising past Benjamin Bonzi 6-4 6-4 on Friday.

The world number six has now reached four finals this season, having lost two of the previous three – winning on clay at the Monte Carlo Masters.

It was the second meeting between the pair in as many weeks, with the Greek having also downed Bonzi at the Halle Open.

And Tsitsipas now has a chance to warm up for Wimbledon in winning fashion.

"It was a good match. I am very happy today," Tsitsipas said in his on-court interview. "I have played a final a week before a grand slam before. It was the year I made the final at Roland Garros, in Lyon.

"It worked out pretty well to have that final and consistency of matches. It is different this time. We are talking about a different surface, so we will see."

Tsitsipas has now claimed a tour-leading 39 wins this season, but standing between the 23-year-old and silverware is Spaniard Bautista Agut, who reached a 20th career final by beating Antoine Bellier 7-6 (7-5) 6-2.

Like Tsitsipas, Bautista Agut is aiming for a second title of the season.

At the Eastbourne International, two Americans will vie for the title after Indian Wells Masters champion Taylor Fritz saw off a tough challenge from Alex de Minaur while Maxime Cressy defeated home favourite Jack Draper 7-6 (7-5) 6-7 (2-7) 6-3.

Fritz, who triumphed at Eastbourne in 2019 – similarly against an American, in Sam Querrey – but has found his best form hard to come by of late, also needed three sets to get the better of De Minaur, eventually succeeding 6-1 6-7 (5-7) 6-3.

"It's amazing," Fritz said. "I was having a bit of a rough start coming back from injury to the grass season, and then I came here and the first day I was here I just immediately felt like I was playing good tennis again.

"I just have a lot of confidence being here, obviously great memories, so I'm really excited to come back out and play for the title again."

Former Wimbledon doubles champion Pam Shriver has said she does not disagree with the decision to ban Russian and Belarusian players from this year's tournament.

Shriver landed 21 women's doubles grand slam titles, of which 20 came in partnership with Martina Navratilova, and 112 career doubles titles in all, and she also claimed 21 singles tournament wins.

Russian and Belarusian players have been banned from this year's Wimbledon due to the ongoing Russian invasion of Ukraine.

Speaking to Stats Perform, Shriver – who won five women's doubles championships with Navratilova at Wimbledon – said while she did not like that it was a decision that needed to be made, she did not object to it.

"War is messy, right? War is tragic. It's been a horror show for Ukrainian people," said American Shriver. "And there's a lot of Ukrainian professional tennis players that are just living through hell.

"Obviously, the decision has been made to try and have the tightest of sanctions. So when you think about the industry of pro tennis, if we're going to have sanctions as well, then Wimbledon [should too], and I understand the UK government has put some pressure throughout the country to not do business with Russians during this time.

"I wish they had never had to make the decision, but I think under the circumstances, I can't say I disagree [with it]."

Shriver also said the decision from the ATP, WTA and ITF to remove ranking points from this year's tournament was "really unfortunate".

However, she does not believe it will make Wimbledon seem like an exhibition, saying: "It's not an exhibition because of the prize money and because of the prestige of winning a Wimbledon title.

"Those are actually the two main things. I think the points are third, and so you're missing the third most important aspect, but the prize money is huge, and [the tournament] will be just as prestigious as ever."

As a result of the ban on Russian players, men's world number one Daniil Medvedev will not be in attendance at SW19, but Shriver does not think it will diminish the competition.

"You know, maybe some years it would [be a problem that Medvedev is not there] but... you're going to have the number one seed being [Novak] Djokovic and number two seed being [Rafael] Nadal," she said.

"When you have the player who has more majors than anybody else ever in the men's game at 22, Rafa, and you have Novak trying to win his fourth straight Wimbledon and his seventh overall and trying to chase Rafa's 22, I think that's going to hide the fact we don't have a number one.

"It's going to be an unusual year to not have rankings one and two [Medvedev and the injured Alexander Zverev], but I feel like the names on the men's side, [Carlos] Alcaraz, [Matteo] Berrettini, [Hubert] Hurkacz got to the semis last year, the two Canadian guys [Felix Auger-Aliassime and Denis Shapovalov].

"I feel like there's still such great depth and with Rafa and Novak leading the way, it's fine."

Novak Djokovic and Rafael Nadal avoided the looming threat of Andy Murray and Nick Kyrgios in Friday's Wimbledon draw.

With both Murray and Kyrgios unseeded, they could have been drawn to face any of the top seeds, but it did not work out that way, most likely to everyone's satisfaction.

Instead, top seed and tournament favourite Djokovic drew South Korean Kwon Soon-woo, while Nadal was pitted with 23-year-old Argentinian Francisco Cerundolo.

Djokovic will be bidding for a seventh Wimbledon title and a fourth in succession following triumphs in 2018, 2019 and 2021, after the cancellation of the 2020 championships.

For second seed Nadal, who has won the Australian Open and French Open already this year to reach a record 22 men's grand slam singles titles, there is the possibility of a rare calendar Grand Slam.

He must carry off the title at Wimbledon for the first time since 2010 to stay in the hunt for that elusive clean sweep, last achieved in men's singles in 1969 by Rod Laver.

Murray, who like Nadal is a two-time former Wimbledon champion, was paired with James Duckworth of Australia and could face big-serving American John Isner in round two. Murray has been troubled by an abdominal strain in the past fortnight, and it remains to be seen whether the 35-year-old is in shape to be a contender.

Duckworth's countryman Kyrgios has been in fine form of late, reaching consecutive semi-finals in Houston, Stuttgart and Halle before he too suffered an abdominal twinge this week and withdrew from the Mallorca Championships. Kyrgios will start against Britain's Paul Jubb at Wimbledon.

A notable first-round clash saw three-time major winner Stan Wawrinka, in the draw on a wildcard, paired with Italian 10th seed Sinner, while Matteo Berrettini, runner-up to Djokovic last year, will play Chile's Cristian Garin.

Powerful Italian Berrettini, who has won the Stuttgart and Queen's Club titles on grass this year, features on Nadal's side of the draw, while in the top half Djokovic has the likes of Carlos Alcaraz and Hubert Hurkacz for company.

Alcaraz, the 19-year-old Spanish revelation who has won four titles already this year, was drawn to face the experienced German Jan-Lennard Struff in round one.

Men's third seed Casper Ruud has never won a singles match at Wimbledon, losing in the first round on his previous two appearances. The recent French Open runner-up will look to get off the mark on the SW19 grass against 34-year-old Spaniard Albert Ramos-Vinolas.

Top seed Daniil Medvedev crashed out of the Mallorca Championships following a straight-sets defeat by Roberto Bautista Agut in the quarter-finals.

Reigning champion Medvedev was a commanding winner when he locked horns with Bautista Agut in Halle last week.

But the Spaniard gained revenge this time around, prevailing 6-3 6-2 for his fourth victory in five meetings with the world number one.

"I had to play very good to beat Daniil," said the former Wimbledon semi-finalist. "He’s the number one; the last champion here in Mallorca. He just beat me a few days ago.

"I played a really compete match. I was more convinced with my game, hitting strong, very solid. I think I did a really good match."

Next up for the Doha champion is Antoine Bellier after the Swiss qualifier came from behind to defeat Dutchman Tallon Griekspoor 5-7 7-6 (7-5) 6-2.

Elsewhere, Stefanos Tsitsipas is through to his first tour-level semi-final on grass after eventually seeing off Marcos Giron 7-6 (7-5) 4-6 6-3.

The former Roland Garros runner-up, who hit 13 aces, claimed the crucial break in game eight of the deciding set to extend his record tally of wins for the campaign to 38.

The world number six will play Benjamin Bonzi in the last four after the Frenchman overcame Daniel Altmaier 6-3 6-4.

Meanwhile, Cameron Norrie was beaten in the quarter-finals of the Eastbourne International, the top seed going down 7-5 7-5 against Maxime Cressy.

The debutant hit 10 aces and won 80 per cent of points on his first serve to advance to a second tour-level semi-final of the season.

There, he will play Jack Draper, who built on his victory over Diego Schwartzman by downing compatriot Ryan Peniston 6-3 6-3 to seal his maiden ATP semi-final appearance.

Reigning champion Alex De Minaur overcame Tommy Paul 6-2 4-6 6-4 to set up a clash with 2019 winner Taylor Fritz, who claimed his seventh successive victory at Eastbourne after seeing off Alexander Bublik 6-3 6-2 in just 67 minutes.

Carlos Alcaraz does not believe he should be considered among the favourites to win Wimbledon given his lack of experience playing on grass. 

The teenage Spaniard is enjoying a breakout season, having won a pair of ATP Masters 1000 titles in Miami and Madrid and picked up further silverware in Rio de Janeiro and Barcelona. 

Alcaraz has been seeded fifth for just his second main-draw appearance at Wimbledon. Last year, he beat Yasutaka Uchiyama in five sets before falling to a straight-sets defeat against Daniil Medvedev. 

They are Alcaraz's only ATP Tour-level matches on grass, so his main focus heading to the All England Club is to simply improve his feel for the surface. 

"I don't mind being in the spotlight, I don't see it as pressure, but I've seen that I'm considered one of the favourites for Wimbledon. I don't see it that way at all," Alcaraz told the Spanish media. 

"There are many players who play better than me on grass. [Novak] Djokovic, Rafa [Rafael Nadal], [Matteo] Berrettini... We are going to try to gain experience on this surface. 

"Knowing how to move well on grass is very important. I think it's the key to being able to get good results. We're trying to improve in mobility and the small details that are more important on this surface. 

"Being more aggressive, trying to take advantage of the fact that I volley well – those things." 

Alcaraz is playing an exhibition tournament at Hurlingham this week and lost his opening match against Frances Tiafoe 6-4 6-2 on Thursday. 

The world number seven has been struggling with an elbow issue, but experienced no discomfort during his defeat. 

"A week ago, I couldn't train at all," he added. "I came here unsure if I was going to be able to play normally.

"The days I've been able to train I've felt quite well – zero pain in the elbow – and today there was no pain in the match with Tiafoe."

Nick Kyrgios has lamented the ATP Tour trialling off-court coaching, warning tennis will lose one of the "unique traits that no other sport had".

The ATP announced on Tuesday that off-court coaching will be tested in the second half of the season, with coaching permitted by a designated person in qualifying and main draw matches.

Verbal coaching will be permitted when players are at the same side of the court as their coach, with non-verbal instructions – for example hand signals – allowed at any time.

Patrick Mouratoglou coached former world number one Serena Williams and now works with Simona Halep, and was quick to welcome the introduction.

Mouratoglou suggested the coaching methods have been used at "almost every match for decades".

While Mouratoglou was a vocal supporter of the ATP decision, Kyrgios – who pulled out of the Mallorca Championships with injury – hit back and slammed the proposed changes.

"Completely disagree. Loses one of the only unique traits that no other sport had," Kyrgios responded to Mouratoglou's post on Twitter.

"The player had to figure out things on his own. That was the beauty of it. What happens if a high-profile player versus a low-ranked player who doesn't have or [cannot] afford a coach?"

The trial commences on July 11 and will be evaluated at the end of the 2022 season, to assess the potential inclusion of off-court coaching in subsequent seasons.

Daniil Medvedev eventually mastered the windy conditions as he came from behind to keep his Mallorca Championships defence alive, but Jannik Sinner and Diego Schwartzman crashed out in Eastbourne. 

World number one Medvedev fought back from a set down to defeat Aslan Karatsev 3-6 6-4 6-2 and advance to a quarter-final against fifth seed Roberto Bautista Agut, who was granted a walkover after Nick Kyrgios pulled out with an abdominal issue. 

The Russian got just 48 per cent of his first serves in during a blustery opening set before improving to 68 per cent in the second and controlling the decider as Karatsev struggled with injury. 

"It was tough to play [in] rhythm. It felt like many points were just whoever managed to put the ball in the court was going to win the point," Medvedev said of the tricky conditions. 

"It was not easy but I'm happy to win because that's the most important [thing]. 

"Last year was amazing. I played great tennis. Hopefully I can do the same this year. I like it here in Mallorca, so hopefully I can stay as long as possible in the tournament." 

Alongside Medvedev and Bautista Agut, Stefanos Tsitsipas is the only other seed left in the draw after he overcame Ilya Ivashka 6-4 6-4. 

Denis Shapovalov was a 6-4 6-1 loser against Benjamin Bonzi, Pablo Carreno Busta went down 6-3 6-4 to Antoine Bellier and Sebastian Baez's meeting with Daniel Altmaier ended in a 6-2 2-6 6-4 defeat for the Argentine. 

At the Eastbourne International, second seed Sinner suffered a 6-3 3-6 6-3 loss to Tommy Paul as he made his return from a knee injury sustained at the French Open.

World number 13 Sinner remains without a grass-court win in his ATP Tour career, while Paul will next face defending champion Alex de Minaur, who overcame Lorenzo Sonego 7-6 (7-3) 6-2 in a repeat of last year's final. 

Jack Draper defeated fourth seed Diego Schwartzman 7-5 7-6 (7-3) to advance to the quarter-finals and Cameron Norrie cruised past Brandon Nakashima in straight sets.

There were also wins for Maxime Cressy, Alexander Bublik and Taylor Fritz. 

Rafael Nadal proved his fitness on his return to action ahead of Wimbledon with a routine straight-sets victory over Stan Wawrinka in Wednesday's exhibition match.

The 37-year-old has won the Australian Open and French Open titles already this year, but his bid for a grand slam sweep was halted by a troublesome foot problem.

Nadal triumphed at Roland Garros despite needing pain-killing injections before every match, leaving his fitness in doubt for Wimbledon next week.

However, the 22-time grand slam winner confirmed last week he was planning on taking part in the third major of the year after spending time training on grass in Mallorca.

And in his first match since beating Casper Ruud in the French Open final two-and-a-half weeks ago, Nadal eased past Wawrinka at the Hurlingham Club in London.

The Spaniard raced into a five-game lead in the opener and, despite losing his break of serve in the seventh game, saw out a straightforward opening set.

Playing in front of around 1,300 spectators, Nadal was pushed a little harder in the second set but still came through relatively unscathed to win 6-2 6-3 in a little over an hour.

Wawrinka, who has been handed a wild card for Wimbledon, expects Nadal to be right in the mix for a third crown at All England Club, 12 years on from his most recent triumph.

"After that I have a lot to work on," he joked. "But it's OK, it's against Rafa. We are used to losing against him. It's normal!.

"I don't know how he's feeling – it looks like normal Rafa. He has been saying he is feeling better and if he is playing he is ready to play his best and to win.

"I think Rafa any time he enters a grand slam is going to be one of the favourites, if not the favourite. 

"He won the first two slams of the year without too many matches before those grand slams so he got a lot of confidence so of course he is part of the favourites."

As well as twice winning Wimbledon, Nadal has also reached the semi-finals in his past two appearances in 2018 and 2019.

After getting a first grass-court appearance in three years under his belt, he is hoping for more happy memories during his time in the English capital.

"I have spent some fantastic moments here in London," he said. "Playing of course at the World Tour Finals a lot of times but of course playing at Wimbledon since 2003. 

"It was always a big goal and a dream for me to achieve important things here at Wimbledon and I was able to make that happen for the first time in 2008. 

"Since that moment, I always come back with the same passion and I always feel very welcomed by the crowd here."
 
Nadal will be number two seed when the draw takes place on Friday, with long-time rival Novak Djokovic the top seed in the absence of Daniil Medvedev.