Carlos Alcaraz survived a Jannik Sinner match point before going on to clinch his maiden grand slam semi-final berth with an epic five-set victory in more than five hours at the US Open.

The Spanish third seed triumphed 6-3 6-7 (7-9) 6-7 (0-7) 7-5 6-3 in the latest-ever finish at the US Open, officially ending at 2:50am Thursday local time.

The match was within nine minutes of being the longest ever in US Open history, the record held by Michael Chang and Stefan Edberg from 1992 of five hours and 26 minutes.

The 19-year-old fought back from a Sinner match point in the fourth set, rallying to force a fifth, where he broke the Italian 11th seed in the eighth game before serving it out for victory.

Alcaraz blew opportunities too, including five set points in the second set, while he failed to serve out the third set before Sinner won the tie-break 7-0 to take all the momentum into the fourth.

But the emerging Alcaraz showcased his doggedness even after falling a break behind in the fourth, to set up a semi-final date against 22nd seed Frances Tiafoe, who has beaten Andrey Rublev and Rafael Nadal in his past two matches.

The win also means Alcaraz is a step closer to claiming the world number one ranking for the first time, which will be achieved if he wins the title, or even if he makes the final and fifth seed Casper Ruud does not.

Data slam: Alcaraz cannot help Nadal comparisons

Alcaraz, 19, is not fond of comparisons to compatriot Rafael Nadal, but his victory means he becomes the youngest grand slam semi-finalist since the 22-time major winner in 2005. 

Little separated Alcaraz and Sinner who will both have won huge admiration, but the Italian's 63 unforced errors compared to the Spaniard's 38 was an outlier.

ACES/DOUBLE FAULTS

Alcaraz – 5/5
Sinner – 8/11

WINNERS/UNFORCED ERRORS

Alcaraz – 58/38
Sinner – 61/63

BREAK POINTS WON

Alcaraz – 11/26
Sinner – 7/16

Iga Swiatek may be the world number one and have had a 37-match winning streak this year but says she is surprised to reach this week's US Open semi-finals.

Swiatek qualified for her third grand slam semi-final for the season with a 6-3 7-6 (7-4) victory over American eighth seed Jessica Pegula in one hour and 53 minutes on Wednesday.

The 2022 French Open champion and 2022 Australian Open semi-finalist became the first women's top seed to reach the last four at Flushing Meadows since Serena Williams in 2016.

The victory comes after Swiatek's 37-match winning streak was ended in the third round at Wimbledon in June by Alize Cornet, winning four out of seven matches at three tournaments following that as the WTA Tour moved to hard courts in the lead-up to the US Open.

Swiatek expressed her surprise at making the last four during her on-court interview after the match and explained that, following early losses in the lead-up tournaments in Cincinnati and Toronto.

"Looking logically at the last tournaments, I just didn't know if this one is going to be possible for me to be consistent and to win so many matches in a row," Swiatek told reporters.

"I feel like I've been playing better and better every week since the start of this swing. So it surprised me because after the losses that I had in Toronto and Cincinnati, I just wasn't expecting to play so well here.

"It gave me actually a lot because I could be kind of an underdog again, not maybe fully, but just not expect from myself that I'm going to win everything right now."

The Pole said her game "clicked" against Pegula, hitting 22 winners compared to the American's 14, winning 43-of-71 points on return.

"I'm pretty proud of it because I feel like I'm playing better and better every match," she said.

"Jessie was a tough opponent today, for sure. Second set was really tight. We both were fighting till the last point. I'm proud of myself that I could be the one to win the last one."

Swiatek will take on Aryna Sabalenka in the semi-finals, while Pegula bows out having reached the quarter-finals at three of the four majors this year.

"I go back and forth, I should be positive," Pegula said. "At the same time I'm like, three quarterfinals. Sorry, but it sucks. It sucks.

"I wish I could have done it here at my home slam, but I guess not. I wish I didn't have to play Iga every quarter-final or Ash Barty, which seem to be the two people that don't really lose that often. So it just sucks.

"I had a great year at the slams. I know there's still some tournaments left. I'm a little deflated right now. I'm not real happy. It just sucks to lose. I just wish it would have been different tonight."

World number one Iga Swiatek has continued her commanding 2022 season with a straight-sets victory over eighth seed Jessica Pegula securing her spot in the US Open semi-finals for the first time.

The Pole, who won this year's French Open and went on a 37-match winning streak until her third-round Wimbledon defeat, triumphed 6-3 7-6 (7-4) in one hour and 53 minutes in a match full of breaks.

Swiatek's victory, her 55th of the season, clinched a semi-final date with sixth seed Aryna Sabalenka, who fell in the last four at last year's US Open.

The 21-year-old became the first women's top seed to reach the US Open semi-finals since Serena Williams in 2016, while she is the only previous grand slam winner remaining in the draw.

In a match that was far from a classic, Swiatek fought back from a break down in the first set to take the advantage, before a second frame that included 10 breaks, with the Pole edging home in a tie-break.

Pegula broke Swiatek in the fifth game to lead 3-2 in the first set but the Pole responded emphatically, going on a sequence where she won 14 of 15 points to secure the set.

Swiatek appeared ready to run away with the match when she immediately broke the American in the first game of the second set but that merely set the tone, with both players struggling to hold on serve.

The world number one served twice for the match but faltered, forcing a tie-break which the Pole won, converting her first match poinit.

Data slam: Breaks galore in tense battle

Holding serve proved challenging in a tense match, with 13 games broken out of the 21 played, including 10 of those coming in the second set. Swiatek had broken serve 57 per cent of her return games during the US Open coming in.

Both players also had more unforced errors than winners, with Swiatek's 21 winners ultimately proving the difference in class. It was Swiatek's eighth win over a top-10 opponent in a row in straight sets.

ACES/DOUBLE FAULTS

Swiatek – 1/3
Pegula – 1/3

WINNERS/UNFORCED ERRORS

Swiatek – 21/32
Pegula – 14/29

BREAK POINTS WON

Swiatek – 7/11
Pegula – 6/10

Diego Simeone described Antoine Griezmann as "one of the most important players" in Atletico Madrid's history after his dramatic winner against Porto on Wednesday.

After 100 minutes and 21 seconds, Griezmann nodded home the latest Champions League goal on record (excluding extra-time) to guide Los Colchoneros to a stunning 2-1 victory.

Mario Hermoso had broken the deadlock in the 91st minute before conceding a penalty that was scored by Matheus Uribe, meaning Atleti's win over Porto is just the second Champions League match to ever feature three goals scored after the 90th minute (excluding extra-time).

Remarkably, the previous instance was when these two sides met last December, when Diego Simeone's men ran out 3-1 winners in Portugal.

Griezmann has had to settle for the role of impact substitute this term, with Simeone recently hinting the France forward's minutes were being managed to avoid activating a purchase clause in his loan deal from Barcelona.

The Atleti boss was fulsome in his praise of the France international afterwards and urged him to remain resilient.

"I love Griezmann very much," he said in a press conference. "Apart from the affection towards him, he is one of the most important players in the club's history.

"We will continue to improve. He is giving us a lot and he has to be strong in his head."

Simeone's son, Giovanni, was also in Champions League action on Wednesday, with the 27-year-old scoring his first goal in the competition in Napoli's thumping 4-1 win over Liverpool.

The Atleti boss added: "Gio was looking to play in the Champions League. He goes to a phenomenal club like Napoli and I'm very happy because he deserves it.

"He needs to continue because what you did today, nobody remembers tomorrow."

Atleti are back in action on Saturday when they host Celta Vigo in LaLiga.

Luciano Spalletti acknowledged Napoli's 4-1 Champions League hammering of Liverpool will cause a "stir" as he urged his players to deliver again after laying down a benchmark.

Goals from Piotr Zielinski, Andre-Frank Zambo Anguissa and Giovanni Simeone sent Napoli in 3-0 up at half-time, though it could have been four if Victor Osimhen's penalty was not saved by Alisson.

That marked just the fourth occasion Liverpool have found themselves three goals down at the interval in the Champions League, with Zielinski adding a fourth soon after the break.

Luis Diaz curled in a fine curling effort to reduce the deficit, but the Reds never recovered from a toothless showing as they fell to their joint-heaviest defeat in the competition.

Napoli are also unbeaten in their last nine Champions League home matches (W6 D3), scoring 20 goals and conceding just five in this spell – which includes three wins over Liverpool.

With an impressive showing in UEFA's flagship club competition, Spalletti suggested his side have placed a marker for their performances and must seize the initiative after a memorable victory.

"It is an important result because the measures are always taken based on who the opponent is, and they are called Liverpool so the result will cause a bit of a stir," coach Spalletti told Amazon Prime Video.

"What becomes fundamental is to play the football we know how to do and follow it up for 95 minutes, without going in flashes, that highlights the level of personality."

Asked if the victory served as a lesson for what Napoli could achieve, Spalletti added: "No lessons, no presumption, no arrogance.

"When you play for Napoli you have to do this every day. We played a good game, now let's think about Spezia."

Napoli will look to capitalise on the impetus from their victory over Liverpool when they host Spezia on Saturday before facing Rangers, who were smashed 4-0 by Ajax in Wednesday's other Group A game.

Antonio Conte hailed Richarlison's versatility after the Brazilian opened his Tottenham account with a brace to seal a 2-0 Champions League win over Marseille on Wednesday.

Spurs took full advantage of Chancel Mbemba's red card as Richarlison twice headed past Pau Lopez inside the final 15 minutes, ensuring Conte's men won their opening match in a Champions League campaign for only the second time.

Richarlison became the 39th Brazilian to score on his debut in the competition, the most of any nation, but is the first Brazilian since Oscar in September 2012 to net a brace on his Champions League bow.

The 25-year-old joined from Everton in a £60million deal in July and Conte believes his display was a perfect demonstration of why they signed him.

"First of all, I am happy for Richy," Conte said in a news conference. "He deserved to have a night like this.

"I remember very well when we signed him, he said he cannot wait to listen to the Champions League music and play in competition. 

"This morning I said I remember what he said and you have your opportunity and chance. I think he did his best.

"We signed him to enhance the quality of team and support our three strikers. Last season when you have a team with Son [Heung-min], Harry [Kane] and Deki [Dejan Kulusevski], we tried to sign a player that was able to play in all three positions.

"For this reason, we didn't have any doubts about signing him and we did it quickly because our idea and ambition was very clear.

"He is more of a striker than Deki but at same time he can play in the Son position, Kane position, and Deki position. This is very important for sure, as when you make rotation, you don't drop the quality."

Spurs travel to champions Manchester City in the Premier League on Saturday and Conte acknowledged he will likely have to shuffle his pack, given the tight turnaround.  

"I have a big decision. Honestly, I am a bit worried as we are playing against City in only two days and it is not easy," he added.

"I think some players need to recover as many have played every game until now. You know very well we have to rotate our team."

Barcelona coach Xavi is overjoyed by Robert Lewandowski's start at the club, referring to him as "insatiable" after terrorising Viktoria Plzen.

The 34-year-old was in ruthless form on Wednesday, scoring a hat-trick as Barca thrashed their visitors 5-1 at Camp Nou.

Playing his first Champions League game for Barca, Lewandowski netted two sumptuous 20-yard strikes either side of a stooping header, with the hosts comfortable throughout.

Wednesday's treble ensured Lewandowski became the first player to net a Champions League hat-trick for three clubs, having scored four for Bayern Munich and one with Borussia Dortmund.

But Lewandowski's display was not a real shock given his strong start to life in LaLiga, and everything about his first few weeks at Barca has left Xavi amazed.

"Robert is like that, he's insatiable. I'm delighted with how he trains, how he improves the team," Xavi told Movistar.

"He's humble, he expects [of his team-mates] and he does a great job of pressing.

"It's not just the hat-trick anymore, it's his work and how he dominates."

Lewandowski was not the only Barca player to impress, however – had the Pole not scored a hat-trick, most would have seen Ousmane Dembele as the standout performer.

The France international was dazzling at times on the right flank.

It was only the second time in a Barcelona shirt that Dembele has laid on five key passes in a single game, and two of those resulted in assists.

Dembele was in devastating form in the second half of last season, and Xavi feels the winger is having fun at Camp Nou.

"He is happy, enjoying himself," the coach added. "He is a player who makes a difference – he assists and scores goals. He is a dagger down the wing."

Barcelona's three first-half goals on Wednesday ensured they have already scored more than the two they managed in the whole group stage last term.

But a tricky trip to face Bayern Munich at the Allianz Arena awaits next week.

Antoine Griezmann declared he will "give everything" in his limited minutes after playing the role of super sub in Atletico Madrid's remarkable 2-1 Champions League win over Porto on Wednesday. 

After 100 minutes and 21 seconds, Griezmann nodded home the latest Champions League goal on record (excluding extra-time) to guide Los Colchoneros to a dramatic victory.

Mario Hermoso had broken the deadlock in the 91st minute before conceding a penalty that was scored by Matheus Uribe, meaning Atleti's win over Porto is just the second Champions League match to ever feature three goals scored after the 90th minute (excluding extra-time).

In a remarkable turn of fate, the previous instance was when these two sides met last December, when Diego Simeone's men ran out 3-1 winners in Portugal.

Griezmann has had to settle for the role of impact substitute this term, with Simeone recently hinting the France forward's minutes were being managed to avoid activating a purchase clause in his loan deal.

But Griezmann insists he is content at Atleti, telling Movistar: "It is what it is, it is not in my hands. I just thank god I'm here. 

"My family is happy, of course I want more, but I'm going to give everything in the minutes I have. 

"I'm very happy here, the only thing I want is to play here and give everything for the club, for Cholo [Simeone] and the fans.

"As I said, on my return I was going to give everything. Scoring the winning goal is always very nice, but we keep the three points and can continue like this.

"We still have a hard time finding a performance, but there are only five games [gone]. We have to improve, we are working on it in training, it is missing in the games. 

"Perhaps we lack confidence in ourselves, to pass forward, look for the strikers and it's only the fifth game, I'm sure we'll go further.

"With the red [for Porto attacker Mehdi Taremi] we got higher, we put more players up, finding passing lines, trying to get inside.

"The penalty, I don't know if it is, but it is what it is. The corner in that last play… here, until the last second anything can happen, and we repeated the Porto goal from last season."

Griezmann's winner ended a run of eight home Champions League games without a win for Atleti – the longest such sequence ever recorded by a Spanish club.

Frances Tiafoe celebrated a "crazy" win after his defeat of Andrey Rublev saw him become the first American man to reach the US Open semi-finals in 16 years.

Tiafoe stunned Rafael Nadal on Monday and followed up that career-high by reaching the last four of a major for the first time on Wednesday.

Ninth seed Rublev, who has lost all six of his grand slam quarter-finals, stood in his way but Tiafoe prevailed 7-6 (7-3) 7-6 (7-0) 6-4 at Arthur Ashe Stadium.

The 24-year-old is the first male player from the United States to reach a semi-final at Flushing Meadows since Andy Roddick in 2006.

Roddick went on to reach the final that year, though fell short of winning a second US Open final as he lost to Roger Federer.

This time around, Tiafoe will face either Jannik Sinner or Carlos Alcaraz, who has a shot at becoming the new world number one. 

"This is wild, this is crazy," world number 26 Tiafoe said after his win. 

"I had the biggest win of my life 48 hours ago and coming out and getting another big win. Andrey's a hell of a player, and to back it up, that's huge. It's tough to turn the page, but I did and now I'm in the semis.

"I feel so at home on courts like this. This court is unbelievable. [The crowd] gets so far behind me, I want to play, I want to give my best. I always find a way somehow on this court, I always play some great tennis and I have been. Let's enjoy this, we've got two more."

Tiafoe might well be the only home hope left for the American crowd to back in New York come the end of play on Wednesday, with Jessica Pegula facing the daunting task of taking on world number one Iga Swiatek in the women's singles.

Atletico Madrid and Porto played out an eventful stoppage-time on Wednesday, becoming just the second Champions League match to see three goals scored in the 90th minute or later.

The LaLiga side took the lead in the 91st minute through Mario Hermoso, who then handled in the box as Porto looked to have snatched a point when Mateus Uribe fired home the resulting penalty.

However, substitute Antoine Griezmann nodded in a stunning winner in the 11th minute of stoppage-time to send the home fans into raptures and give his side three points.

Griezmann's goal made the Champions League game only the second to feature three 90th-minute goals, after a match between the same two teams in December of last year, when Atletico ran out 3-1 winners.

The LaLiga side's late victory gets them off to a great start as they look to go further than they managed in last season's competition when they were knocked out at the quarter-final stage by Manchester City.

Porto will have to pick themselves up as they attempt to reach the knockout stages, with Club Brugge defeating Bayer Leverkusen 1-0 in the other Group B clash on matchday one.

Jurgen Klopp conceded Liverpool must "reinvent" themselves after their underwhelming start to the season continued with a 4-1 hammering at Napoli in the Champions League.

Liverpool trailed by three goals at half-time for just the fourth time in their Champions League history after strikes from Piotr Zielinski, Andre-Frank Zambo Anguissa and Giovanni Simeone on Wednesday.

Victor Osimhen also missed a first-half penalty after another slow start from Liverpool, who have conceded first in five games this season in all competitions, the joint-most of any Premier League side.

Zielinski added a second strike after the interval, with Luis Diaz scoring a consolation goal as Liverpool fell to their joint-heaviest defeat in the Champions League.

An abject showing in Naples, coupled with just two wins in six Premier League games, left manager Klopp questioning whether Liverpool need to reshape to tackle a challenging start.

"Really tough to take, it's not that difficult to explain when you watched the game. To start with the two penalties, okay first of all Napoli played a really good game, we didn't, that is the first explanation for the defeat," the German told BT Sport.

"They scored one penalty and missed another but the next two goals we served on a plate, that's not cool and we should defend better. Then 3-0 down having chances but never really in the game.

"We were not compact defensively or offensively. Until Thiago [Alcantara] entered the pitch I cannot remember one counter-pressing situation, we were too wide.

"Everything is obvious but why it happened is now the question, I cannot answer now, let me think about it. It is a really tough cookie to take, but I have to take it.

"We played bad first halves, unfortunately, usually we don't concede three, though – with Alisson in the goal you have to be really bad to do it. We did the same here when we lost 2-0 [in 2019-20].

"It looks like we have to reinvent ourselves, there's a lot of things lacking – not in all games – but the fun part is we have do that in the middle of a Premier League season and Champions League campaign."

Wolves are next up for Liverpool at Anfield on Saturday, and Klopp suggested Bruno Lage's side will be relishing playing the Reds amid a poor run of form.

"In three days we play against Wolves, if they saw the game tonight they cannot stop laughing probably, I would say it is the perfect moment [to play us]," he added.

"We have to find a setup to be much better in everything. You could see it on the pitch, we were not working as a team, nothing to do with personal stuff, but we didn't play good enough it is obvious and clear.

"We play in the strongest league in the world and have a tough Champions League group, but it is my responsibility and I need time to think about. 

"There a few things that are obvious but it is my job to find out more to reset and go."

Andy Robertson urged Liverpool to "wake up quickly" after a dire first-half performance resulted in a 4-1 humbling at Napoli in their Champions League opener on Wednesday.

Liverpool have failed to live up to early expectations in the Premier League, winning just twice in six games, and their poor start to the season continued in Naples.

Piotr Zielinski converted from the penalty spot after just five minutes, before Alisson denied Victor Osimhen's spot-kick – but that only denied the inevitable for the out-of-sorts Reds.

Andre-Frank Zambo Anguissa and Giovanni Simeone, the latter on his Champions League debut, added further goals before half-time, with Zielinski adding a fourth after the interval.

It was just the fourth time Liverpool have found themselves three goals down at half-time in the competition, with Luis Diaz's second-half strike making little difference for Jurgen Klopp's side.

The thrashing marked the Reds' joint-heaviest defeat in the Champions League, and Robertson offered an honest appraisal after the game.

"We were miles too open. You can't come to a place like this and not be compact. They were by miles the better team," the Scotland international told BT Sport.

"Too many times they had spaces to run at us and cause us problems. You come away in the Champions League and you can't be wide open like that. We have to get back to basics and be compact.

"We deserve this result, even though we created chances. The way we were wide open they found so many spaces, that's not like us. It felt like they had an extra man.

"You have to be ready to fight. We weren't close enough to our mate when they went to press the ball, people weren't backing each other up soon enough.

"They hit the post within the first minute then they get a penalty, and another one and you're 3-0 down. We had two good chances to make it a bit different – but you can't dwell on that.

"We have to wake up quickly because we can't perform like that."

Liverpool will look to respond at home to Wolves in the Premier League on Saturday before hosting Ajax, who smashed Rangers 4-0 in Group A's other game on matchday one.

Robert Lewandowski made history with his maiden hat-trick for Barcelona against Viktoria Plzen, becoming the first player to hit Champions League trebles for three different sides.

The Poland international found the target twice in the first half at Camp Nou on Wednesday, with Franck Kessie and Plzen's Jan Sykora also netting in a frantic opening 45 minutes.

Lewandowski capped a scintillating performance with his third after 67 minutes, firing a 20-yard finish past Jindrich Stanek after a neat interchange with Ferran Torres, who then struck to seal a 5-1 victory for Barca.

The latter strike for Lewandowski made him the first player to ever score Champions League hat-tricks for three different teams, having previously hit trebles for Bayern Munich (four) and Borussia Dortmund (one).

Lewandowski was level on Champions League goals with Karim Benzema (86) heading into the game but moved to third in the all-time scoring charts – only Lionel Messi (125) and Cristiano Ronaldo (140) have more.

The Barca forward has been in fine LaLiga form as well, scoring five times in four league appearances, and will look to continue his scoring run when the Blaugrana visit Cadiz on Saturday.

Antoine Griezmann stepped off the bench to guide Atletico Madrid to a remarkable 2-1 win over 10-man Porto in the Champions League, in a match that featured three stoppage-time goals.

Atleti and Porto played out a goalless draw when they met on the opening matchday of last season's Champions League, and a repeat looked likely for the duration of normal time on Wednesday.

But after Mehdi Taremi picked up a second yellow card for simulation, Mario Hermoso fired Atleti ahead before handling in his own area, allowing Mateus Uribe to level the scores with a 96th-minute penalty.

There was to be one final twist in the 11th minute of added time, however, as Griezmann reacted quickest from an Atleti corner to cap a remarkable contest with a dramatic winner.

Bayern Munich defeated Inter 2-0 at San Siro in their Champions League opener thanks to a first-half strike from Leroy Sane and Danilo D'Ambrosio's own goal.

The visitors dominated the opening stages and deservedly went ahead through Sane when he brilliantly brought down a Joshua Kimmich long ball, before rounding Andre Onana and drilling home.

Julian Nagelsmann's side came under increasing Inter pressure in the second half, but D'Ambrosio's awkward attempt at a block from a Sane shot killed the game off and earned Bayern all three points.

Bayern have now won their last 19 Champions League openers, as the Bundesliga titans paved the way for what they hope will be qualification from a tough Group C.