American Chris Eubanks stunned world number five Stefanos Tsitsipas to reach the quarter-finals of Wimbledon with the biggest knockout of his career.

The towering 27-year-old twice came from a set down to continue his fine run in south-west London with a thrilling 3-6 7-6 (4) 3-6 6-4 6-4 victory in just over three hours.

His impressive win over two-time grand slam finalist Tsitsipas follows success over British number one Cameron Norrie and sets up a last-eight meeting with third seed Daniil Medvedev.

“I feel like I’m living a dream right now,” said Eubanks. “This is absolutely insane.

“When you paint all of the context – I’ve tried so much to block everything out and just focus on the next match – it’s surreal, it’s unbelievable.

“This has been a dream come true.”

Eubanks, ranked 43rd in the world, had only won two grand slam matches prior to arriving at SW19.

He made an unconvincing start to the contest on Court Two but battled back and floored Tsitsipas – conqueror of Andy Murray – with 53 winners, including 13 aces.

Eubanks recently said he hated playing on grass but is currently enjoying a nine-match winning streak on the surface.

“Those words will never come out of my mouth (again) for the rest of my career,” he said.

“The grass and I, we’ve had a very strenuous relationship over the years but right now I think it’s my best friend.”

Earlier, world number three Medvedev eased into his maiden Wimbledon quarter-final after Jiri Lehecka was forced to retire injured.

The 27-year-old Russian was in control on Court One and had just gone two sets ahead at 6-4 6-2 when his Czech opponent pulled out.

Lehecka received treatment during a medical timeout at the end of the opening set but initially battled on in some discomfort before opting for a premature departure.

“I honestly did not (realise) until he retired,” he said of Lehecka’s injury.

“I saw that maybe his movement is a little bit restricted but the way he was throwing the ball I thought that it was not causing him enough trouble but then when he retired, I was like, ‘OK, I see it different’.

“I feel sorry for Jiri. Hopefully he can recover fast and he has a lot more grand slams to come ahead of him.”

Lehecka showed some touches of class but his performance was undermined by a series of errors and, ultimately, his fitness issue.

“This is not the way how I wanted to finish the match,” the 21-year-old said.

“Of course all the credit to Daniil, because he played another solid match, but for me still I felt that if I was able to show my maximum level, then it would have been a much more better match than it was today.

“But unfortunately the injury got much, much worse during the match, and I wasn’t able to compete on the highest level.”

Lehecka struggled to deal with the power of Medvedev, with one of his returns of serve flying off court and landing in a spectator’s drink.

Both players were then forced to sit down during the sixth game of the second set due to a medical emergency in the crowd.

The affected spectator eventually walked out of the arena with the aid of medics following a delay of around 10 minutes.

White Birch is set for a mid-season break following his below-par showing in the Dubai Duty Free Irish Derby.

Trained by John Murphy, the colt had acquitted himself with real credit in the first half of the season, following up a win on reappearance in the Ballysax Stakes with podium finishes in both the Dante and then the Derby at Epsom.

He was sent off 6-1 at the Curragh but was ultimately way below his best as he trailed home in a well-held eighth of nine and connections are keen to put a line through the performance as they now freshen their charge up ahead of a return in the autumn.

“He’s come home perfectly sound and all is well,” said George Murphy, assistant trainer to his father.

“He just ran a little bit flat and ran in to a fair bit of trouble, so he is going to get a little break now and aim for a couple of targets at the back-end of the year.

“He’s had a tough early season so he’s more than entitled to a rest now.”

It is still to be decided what those targets may be, but Murphy admitted another crack at Classic honours in the St Leger is a possibility with the colt as short as 10-1 for a trip to Doncaster on September 16.

He also suggested that although a drop in class could come into the reckoning, he believes the son of Ulysses has earned the right to continue campaigning at the highest level.

“Potentially it is one of the races we are looking at,” continued Murphy, when asked if the Town Moor Classic could be on the agenda.

“We’re just discussing with the owners at the moment and haven’t made any final plans yet.

“It’s unfair to say he is not up to it (running in Group One company) after one run, although we’ll keep lesser races in mind also. But I think he is more than entitled to compete at that level.”

Novak Djokovic belatedly reached the Wimbledon quarter-finals after polishing off Hubert Hurkacz.

The seven-time champion’s plans for a day off were scuppered by the strict 11pm curfew in SW19, meaning the match was halted on Sunday evening with Djokovic two sets to the good.

Upon returning to Centre Court, Djokovic was inconvenienced further when Polish 17th seed Hurkacz stole the third set.

But the 36-year-old hit back to register a 7-6 (6) 7-6 (6) 5-7 6-4 victory and book a 14th quarter-final at the Championships.

He said: “Big credit for Hubert for playing an amazing match, tough luck for him. he put up a great performance.

“Honestly, I don’t recall the last time I felt this miserable on returning games, due to his incredibly accurate and powerful serve.

“He’s got one of the best serves in the world and it’s so difficult to read it. Playing on the quickest surface it really favours the big servers so it was not really an enjoyable match for me.

“But I guess in the important moments last night I was fortunate to win the first set. This match could definitely have gone a different way but I held my nerve and I’m happy to win.”

Djokovic had not faced so much as a break point in his previous 53 service games, so a third tie-break seemed inevitable until Hurkacz forced two at 6-5 and the Serbian dumped the second into the net.

Hurkacz fended off two break points – the first he had faced since the second set, some 17 hours ago – at 3-3 in the fourth but when he slipped on the baseline at deuce, Djokovic converted the third.

It was the first time Hurkacz had dropped serve at these Championships and it proved enough to see the 23-time grand slam champion through to a meeting with Russian seventh seed Andrey Rublev in the last eight.

“He’s a different player to Hurkacz, for sure,” added Djokovic. “He’s got very powerful, quick groundstrokes, stays close to the line and has one of the best forehands in the game, loves to dictate… I’m not going to talk too much about tactics.

“I have to be ready. The matches are only going to get harder. It’s tough to say it’s going to get harder than what I experienced yesterday and today, but I have to be ready for that.

“Rublev has been a top-10 player for many years and he’s looking for his first semi-finals at a grand slam. Hopefully it’s not gonna happen.”

Tension will be replaced by appreciation when Elina Svitolina takes on Iga Swiatek for a place in the Wimbledon semi-finals on Tuesday.

The All England Club can have barely heard a reaction like the chorus of booing that accompanied Victoria Azarenka off Court One following her narrow defeat by Svitolina on Sunday evening.

Ukrainian players refuse to shake hands with Russian or Belarusian opponents at the end of matches as a result of the invasion of their country and there has been significant locker room rancour about how the issue has affected tennis.

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The WTA has been criticised for not offering enough support to its Ukrainian members, who feel the rights of their Russian and Belarusian counterparts have been prioritised.

An exception to that has been Swiatek, with the Pole using her voice and platform to speak up for Ukraine and organising a charity exhibition event last summer.

“She’s a great champion, also a great person,” said Svitolina. “I’m really thankful for her support of Ukrainians, Ukraine, doing everything what is in her power, being vocal about that.”

Swiatek wears a blue and yellow ribbon to show she is still thinking about Ukraine, and she said of Svitolina: “For sure we respect each other. We like each other. It’s all pretty positive.

“It’s good to have these kind of players on tour that are nice and they have good values, I think. I’m happy that she’s back after becoming a mother. I don’t know how tough it is, but I’m sure it’s really tough.

“I’m happy that she’s playing a solid game. I think it’s going to be interesting.”

Svitolina has now reached back-to-back grand slam quarter-finals having only returned to the tour in April following the birth of daughter Skai in October.

The former world number three has made two grand slam semi-finals, at Wimbledon and the US Open in 2019, while Swiatek, who saved match points against Belinda Bencic in round four, is having her best run here.

Little Big Bear’s participation in Saturday’s Pertemps Network July Cup is rated as only “50-50″ by Aidan O’Brien.

Runner-up to Shaquille in the Commonwealth Cup at Royal Ascot, the pair had been set to cross swords once more on the July course this weekend.

However, the rematch may have to wait due to a stone bruise to last year’s leading juvenile.

“Little Big Bear is not definite to run as he had a foot bruise last week and he missed six days without doing any cantering,” said O’Brien.

“We might do something in the morning with him to see how he is and whether we decide to run him or not.

“If he does run, we won’t know until he has run how that has affected him. He is not guaranteed to run and we will decide in the next couple of days.

“I’d say it is 50-50 regarding his chances of running.”

Should Little Big Bear not run then Meditate, a winner at the Breeders’ Cup, could have her impending retirement delayed, despite only running in the Prix Jean Prat on Sunday.

“We have to decide whether we are going to retire Meditate or not. It is very possible that she could retire,” he said.

“France at the weekend was a bit of a mess. We thought Andrew’s (Balding) horse (Chaldean) would make the running, but he didn’t and the pace was just very messy so we didn’t get a clear picture with her.

“We didn’t want to carry on too long with her as she is a very high-class filly for the paddocks.

“She is obviously in the July Cup and if Little Big Bear wasn’t going to run we would give her a chance going back over six before she goes as she is a filly that has a lot of speed and was always very comfortable going forward over six furlongs.

“It is all a little bit up in the air, but it is dependent on Little Big Bear what happens to him during the middle of the week.”

As expected, Royal Ascot winner Khaadem has been supplemented.

Charlie Hills stated last week the Newmarket race was the “obvious target” for his surprise Queen Elizabeth II Jubilee Stakes scorer, and the £36,000 supplementary fee was paid on Monday.

Julie Camacho’s Shaquille put up a remarkable display to win the Commonwealth Cup during the same meeting having missed the break, but this time he will have to beat his elders.

Another northern raider, the Michael Dods-trained Azure Blue, is also strongly fancied on the back of her win in the Duke of York Stakes over Highfield Princess.

Kinross is in there for Ralph Beckett, but he will have to do without his usual partner Frankie Dettori, who is currently on the sidelines suspended.

Cold Case, Art Power and Run To Freedom are also among the 14 possibles.

O’Brien’s exciting City Of Troy is one of 12 in the bet365 Superlative Stakes.

The Justify colt won easily on his debut, making even the usual reticent Ryan Moore reach for the superlatives.

Charlie Appleby’s Great Truth and the Richard Hannon-trained duo of Son and Haatem are among his possible rivals.

There are 42 left in the bet365 Bunbury Cup, with Saeed bin Suroor’s Shining Blue at the top of the weights.

World number three Daniil Medvedev eased into his maiden Wimbledon quarter-final after Jiri Lehecka was forced to retire injured.

The 27-year-old Russian was in control on Court One and had just gone two sets ahead at 6-4 6-2 when his Czech opponent pulled out.

Lehecka received treatment during a medical timeout at the end of the opening set but initially battled on in some discomfort before opting for a premature departure.

Medvedev awaits either world number five Stefanos Tsitsipas or American Christopher Eubanks in the last eight.

“I honestly did not (realise) until he retired,” he said of Lehecka’s injury.

“I saw that maybe his movement is a little bit restricted but the way he was throwing the ball I thought that it was not causing him enough trouble but then when he retired, I was like, ‘OK, I see it different’.

“I feel sorry for Jiri. Hopefully he can recover fast and he has a lot more grand slams to come ahead of him.”

Lehecka showed some touches of class but his performance was undermined by a series of errors and, ultimately, his fitness issue.

The 21-year-old struggled to deal with the power of Medvedev, with one of his returns of serve flying off court and landing in a spectator’s drink.

Both players were then forced to sit down during the sixth game of the second set due to a medical emergency in the crowd.

The affected spectator eventually walked out of the arena with the aid of medics following a delay of around 10 minutes.

Speaking about reaching the last eight at SW19 for the first time, Medvedev added: “It’s probably my fifth or sixth Wimbledon and I was not very successful but I never lost on this court.

“I feel sorry that all the quarters are going to be played on Centre (Court). I’m like, ‘can I just continue here?’.

“I’m really happy and looking forward to the next match.”

George Boughey’s Soprano has the Duchess Of Cambridge Stakes in her sights after an encouraging Royal Ascot performance.

The chestnut daughter of Starspangledbanner won on debut in a Newmarket maiden in May, beating subsequent Hilary Needler winner Midnight Affair, and was then an admirable third in the Albany Stakes.

On the latter occasion she was two lengths behind the winner, Porta Fortuna, and a length behind Aidan O’Brien’s Matrika, since successful in the Group Two Airlie Stud Stakes at the Curragh.

Soprano will also be making the step up from Group Three to Group Two level when she heads to the July course on Friday.

Harry Herbert, of owners Highclere Thoroughbred Racing, said: “She’s in great form, she runs in the Group Two at Newmarket – the Duchess of Cambridge.

“That’s very much the plan, with Ryan Moore booked to ride.

“There’s been a really good form boost and she’s a very smart filly.

“I think she will be even better over further which is exciting for the future, but she’s in good form and I think a stiff six at Newmarket will suit her.

“She ran such a blinder at Royal Ascot, William (Buick) said that had things gone a bit differently, had she broken better and been a bit nearer the pace, then she might have gone very near to winning.

“We’ll see, she deserves to take her chance and she’s very exciting.”

Sonny Liston will be attempting to land a knockout blow at York on Saturday when he lines up in the John Smith’s Cup.

Ralph Beckett’s charge was outboxed by stablemate Jimi Hendrix when second in the Royal Hunt Cup at Royal Ascot but now has the chance to get the judge’s verdict as one of 33 who remain in contention for the valuable £200,000 contest.

Owned by Chelsea Thoroughbreds, the four-year-old has not had his hand raised since striking on debut when trained by Charlie Hills, but connections are banking on the gelding relishing a step up to 10 furlongs to return him to the winner’s enclosure.

“He runs off his old mark and we wanted to get him in somewhere off that mark,” said Emma Spencer, managing director of Chelsea Thoroughbreds and also racing manager for the owners.

“He’s proven over a mile and a quarter and although he didn’t stay in the Derby, he was third at Chester in the Dee Stakes and then he was third in a Group Three at Goodwood.

“So there is a case for saying that a mile and a quarter is his ideal trip and if he runs like he did the other day and he seems to be in a good place then the race could really suit him.”

Richard Fahey’s course-and-distance winner and last year’s fourth Spirit Dancer is also among the possibles for the historic 10-furlong handicap, with Simon and Ed Crisford’s Sea The Casper, William Haggas’ Amleto and Andrew Balding’s Nobel all potential improvers who head to the Knavesmire appearing unexposed and on the back of victories last time.

Also looking to go one better than at Royal Ascot is Kerdos who will line-up in the John Smith’s City Walls Stakes.

The three-year-old son of Profitable was downed late on by Rhythm N Hooves when a silver medallist in the Palace of Holyroodhouse Stakes and trainer Clive Cox hopes he can get in the mix once again as he steps up to Listed level.

“Kerdos ran a blinder at Ascot and the Listed race at York, the City Walls Stakes, that would be our next target for him,” said the Lambourn-based handler.

“Obviously it is against older horses, but he’s a progressive three-year-old who we are really happy is going the right way.

“We know the family very well. I trained his sire Profitable and he’s out of a half-sister to Priceless who was a Group Two winner in the Temple Stakes at Haydock. They normally progress with age and this fella seems to fit that profile well.”

Kerdos is one of 17 possible runners for the five-furlong Listed event, with Edward Bethell’s Regional chief featuring in the opposition following his Achilles Stakes victory at Haydock last month.

Achilles second and third Equilateral (Charlie Hills) and Raasel (Mick Appleby) are also involved, while Fahey’s Great State was a winner of the Listed Westow Stakes over course and distance during the Dante meeting and will be bidding to provide his Malton-based handler with more success at one of his local tracks.

The British Grand Prix is closing in on a deal to secure its long-term future, with the head of Motorsport UK David Richards insisting it is “just a matter of time” before a new contract is announced.

Red Bull’s Max Verstappen extended his winning streak, with Lando Norris holding off Lewis Hamilton in a thrilling battle between the two British drivers, at Silverstone on Sunday.

However, a five-year £100million contract signed off by Formula One’s American owners’ Liberty Media, Silverstone and the British Racing Drivers’ Club, which owns the Northamptonshire venue, in 2019 is up for renewal next season.

The British Grand Prix has been an ever present on the F1 calendar, dating back more than 70 years, with Silverstone staging the sport’s first world championship race.

But Motorsport UK chairman Richards said: “I don’t think there is any question that the deal will get done. Both the BRDC and Liberty are keen to see that resolved and it is just a matter of time.

“We were hoping it would be announced this weekend – that wasn’t the case – but that is not because there is no willingness to get it done.”

A record crowd in excess of 150,000 people watched Verstappen’s sixth consecutive win on Sunday, with nearly half-a-million fans in attendance at Silverstone over the course of the weekend.

Liberty has flirted with the idea of staging a street race in London, but a number of roadblocks have thwarted any serious progress.

Speaking to the PA news agency, Silverstone managing director Stuart Pringle said: “We don’t have a new contract yet.

“But we are the most sustainable race in the championship – by virtue of having seven out of 10 teams located nearby, so there is no long-haul aviation.

“We have got 2,700 solar panels powering the Paddock Club. We have a huge recycling operation here and that is very important to F1 in helping them achieve their net zero carbon 2030 target.

“We have radically improved our entertainment programme. The races are thrilling and they get excellent television audiences. It is very popular with sponsors and VIPs. The Paddock Club is in the top two or three of all the races that Formula One sell every year.

“And for the last four years that F1 has surveyed its fans after every race, Silverstone have won those customer surveys, and by some margin too.

“So I struggle to know what more we can do if that is not enough. We are really enjoying working with F1 at the moment. The product is fantastic. Privately F1 are recognising our efforts and I hope publicly they are too.”

Beatriz Haddad Maia was left in tears after she was forced to retire during her fourth-round match with defending champion Elen Rybakina.

The Brazilian was enjoying her best run at Wimbledon, having never previously got past the second round, but hopes of a first quarter-final appearance were taken away from her when she suffered a hip injury early in the first set.

She had a lengthy medical timeout trailing 3-1 and tried to carry on but after being unable to move during a Rybakina service game it was clear that she could not continue.

Having been in tears throughout the last game, she reluctantly walked to the net and shook hands with the score at 4-1.

It meant that Rybakina’s smooth progress continued as she was on court for just 21 minutes and will now be able to put her feet up to watch Ons Jabeur and Petra Kvitova battle it out for the chance to play her in the quarter-finals.

Teenager Mirra Andreeva was given a point penalty for throwing her racket and refused to shake the umpire’s hand in a fourth-round loss to Madison Keys at Wimbledon.

The 16-year-old Russian, who has been a crowd favourite on her debut at the All England Club, looked set to become the youngest player since Anna Kournikova in 1997 to make the quarter-finals here when she led by a set and 4-1.

But Keys fought back and Andreeva was given her first warning by umpire Julie Kjendlie after flinging her racket across the grass when she lost the second-set tie-break.

She then appeared to throw her racket again when Keys forced deuce at 2-5 in the deciding set, earning a second warning and an automatic point penalty, which gave her opponent a match point.

Andreeva argued her case with Kjendlie, saying: “Do you understand what you are doing? I didn’t throw the racket. I slid. It’s the wrong decision. I slid and then I fell.”

But the decision stood and Keys won the next point to clinch a 3-6 7-6 (4) 6-2 victory, with Andreeva heading to the net to shake hands with her opponent but walking straight past the umpire.

Andreeva had feared being defaulted after whacking a ball angrily into the crowd at the French Open and teenage petulance is something she will clearly need to grow out of, but there is no doubt she is a special talent.

She had not played on grass until the qualifying tournament two weeks ago but she has learned quickly on the surface and her mix of terrific defence and intelligent point construction will win her a lot of matches.

For nearly an hour she was completely in control, with Keys, who possesses one of the most natural ball strikes in the game but can be very erratic, making error after error.

The American pulled herself together just in time, changing her tactics to follow her big groundstrokes to the net and even breaking serve with a left-handed forehand winner.

By the time the second-set tie-break came around, it was Keys who had the momentum, and Andreeva was unable to shrug off her disappointment at the beginning of the deciding set.

She briefly threatened to turn things around again but Keys kept her composure while Andreeva lost hers and with it the match.

As expected, Royal Ascot winner Khaadem has been supplemented for the Pertemps Network July Cup at Newmarket on Saturday where he will clash with another Ascot hero, Shaquille.

Charlie Hills stated last week the “obvious target” for his surprise Queen Elizabeth II Jubilee Stakes scorer was the midsummer highlight on the July course, and the £36,000 supplementary fee was paid on Monday.

Julie Camacho’s Shaquille put up a remarkable display to win the Commonwealth Cup during the same meeting having missed the break, but this time he will have to beat his elders – as well as confirm form with Aidan O’Brien’s Ascot runner-up Little Big Bear.

Another northern raider, the Michael Dods-trained Azure Blue, is also strongly fancied on the back of her win in the Duke of York Stakes over Highfield Princess.

Kinross is in there for Ralph Beckett, but he will have to do without his usual partner Frankie Dettori, who is currently on the sidelines suspended.

Cold Case, Art Power and Run To Freedom are also among the 14 possibles.

Aidan O’Brien’s exciting City Of Troy is one of 12 in the bet365 Superlative Stakes.

The Justify colt won easily on his debut, making even the usual reticent Ryan Moore reach for the superlatives.

Charlie Appleby’s Great Truth and the Richard Hannon-trained duo of Son and Haatem are among his possible rivals.

There are 42 left in the bet365 Bunbury Cup, with Saeed bin Suroor’s Shining Blue at the top of the weights.