Manchester City will take an aggregate lead into the second leg of a Champions League quarter-final for the first time when they travel to Borussia Dortmund, but there was another break with tradition in Manchester this week.

An hour and 15 minutes before events got underway at the Etihad Stadium, Pep Guardiola picked a starting XI that did not lead to raised eyebrows and mass consternation.

No midfield diamond, like the one that quickly lost its shine in a 3-0 defeat to Liverpool at Anfield in 2018; no overt caution as in the 1-0 loss at Tottenham that preceded a crazy second leg and an exit on away goals; no unwieldy 5-3-2 within which City froze so badly against Lyon last year.

Much of the runaway Premier League leaders' success this season has been based upon Guardiola harnessing the full depths of a talent-rich squad, mastering the art of pandemic football through shrewd rotation. So, given his line-ups have become increasingly tricky to predict, the prospects of a pre-match bolt from the blue were reduced.

However, if he has a best XI, the side that eventually prevailed 2-1 against Dortmund were something close to it. A midfield trio anchored by Rodri, ablaze with Kevin De Bruyne's creativity and gilded by Ilkay Gundogan's supreme movement and timely goals. Up front there was, well… no one in particular as Riyad Mahrez and Phil Foden hovered around false nine Bernardo Silva.

And at the back, in front of an unusually erratic Ederson, were City's four best defenders this season. There was Joao Cancelo, the wildcard full-back/midfield hybrid who has given Guardiola's side a new dimension and added control. On the other flank, Kyle Walker – a right-back in the most conventional sense and one of Guardiola's most reliable performers of the past four campaigns.

At centre-back, the reborn John Stones was alongside Ruben Dias. An error on his England return last month stood out so much because Stones has been immense in sky blue this term. City have only conceded seven times with him on the field this season.

Then there is Dias, who joined as a club-record signing from Benfica in the aftermath of a 5-2 defeat to Leicester City. Such humiliation has never looked like being repeated with the Portugal international in harness.

"He’s been so important so far but still we have two months before the end of the season," Guardiola said ahead of Saturday's match with Leeds United, against whom Dias made his debut six months ago.

"He has been so important in the leadership and quality he has."

Despite their impressive individual performances, the Dortmund game was only the fifth time the Walker-Stones-Dias-Cancelo quartet has lined up together.

Given City have two Wembley dates this month and possibly more showpiece encounters to come as they pursue honours on four fronts, their potential status as a go-to defensive line is interesting, mainly because it is a setup in which the influential Dias seems a little uncomfortable.

The reason for this is rooted in the fact that, since City embarked upon their remarkable ongoing run of 27 wins in 28 matches, Guardiola's back four has not really been a back four.

In possession, which is most of the time when you're Manchester City, Cancelo's role is generally to bolster the midfield numbers. When Guardiola highlighted some of City's struggles in central areas against Dortmund, it was Rodri and Cancelo – tellingly not one of the Spain international's teamsheet midfield colleagues – who he namechecked.

That leaves three strung across the backline to start the build-up, a fundamental basis for any strong Guardiola performance. When Cancelo has started nominally from right-back, that three is usually Stones-Dias-Oleksandr Zinchenko. Walker's starts at right-back have often come with the left-footed central defender Aymeric Laporte in the line-up, meaning the back three in possession is Walker-Dias-Laporte.

Dias thrives in this position at the heart of things, with ball players on their natural sides flanking him. The problem when Walker and Cancelo start is Dias ends up on the left of the three, with Stones central.

"You are completely right, good point," Guardiola conceded when it was raised Dias was put slightly out of his comfort zone in midweek.

"We don't have left footer to pass the ball to the wider winger quicker with a natural left foot. That's true.

"But in that game we needed specifically Ruben in that position, with John, and that's why you use it. We won for other aspects in other positions and other situations."

So, Guardiola felt the trade-off was worth it due to benefits elsewhere. Considering how City came on strong down the stretch before Foden's dramatic winner, it is hard to argue too much.

A closer inspection of the games Walker, Stones, Dias and Cancelo have started shows Marco Reus' equaliser for Dortmund was the first goal City have conceded in this configuration. Previously, they drew 0-0 at Manchester United, beat Southampton 1-0 and Aston Villa and Borussia Monchengladbach 2-0, although Walker went off injured before half-time versus Villa and was replaced by Zinchenko.

But what of Dias? When starting with Stones, Walker and Cancelo, he averages 12 fewer passes per 90 minutes (78 down from 90) at a lower accuracy (91.1 from 93.8) than his overall season statistics, suggesting he is not so sure in possession on his unfavoured side of the field.

His duel success rate drops from 62.7 per cent to 50, with aerials falling from 66.1 to 54.5 per cent. His tackles per 90 minutes track upwards slightly from 0.9 to 1.3, although this could indicate the build-up flaws of this back three/four means more last-ditch defensive work.

Another game where Dias was on the left of the three in possession came in February against West Ham, where Walker started and Zinchenko performed the Cancelo role from the left.

Although Dias and Stones were the goalscoring heroes in a 2-1 win, City were ragged and Opta's expected goals (xG) figures for the game saw David Moyes' men 1.9-0.5 to the good at full-time, indicating Guardiola's normally smooth outfit rode their luck.

These are minor drop-offs and it is not as if City have looked useless in the games mentioned above. However, as Guardiola often likes to say, the biggest games can come down to the "small details".

Having the man who turned his defence around performing an uncomfortable task on one of those occasions is a risk he should perhaps avoid.

Pep Guardiola insists Raheem Sterling is only out of the Manchester City side due to the "incredible, incredible, incredible top form" of Riyad Mahrez and Phil Foden.

Sterling has been a key performer throughout the Guardiola era at the Etihad Stadium but a scoreless outing in last month's 2-0 FA Cup quarter-final win at Everton stands as his only start in City's past six matches across all competitions.

He was in the first XI for all three of England's World Cup qualifiers during the recent international break, scoring against San Marino.

The 26-year-old was back to a substitute's role when the Premier League leaders took on Leicester City last weekend before failing to feature in the 2-1 Champions League quarter-final win over Borussia Dortmund.

Sterling might have the chance to press his claims once again when City host Leeds United on Saturday, with Guardiola expected to ring the changes.

Both men denied a reported bust-up in the aftermath of last month's Manchester derby defeat and the City manager insists the form of midweek matchwinner Foden and Mahrez – who was named PFA Premier League Player of the Month for March on Friday – is what has forced his hand.

"Raheem has been so important in our period here since we arrived, nothing would have been possible without him," he said.

"Right now, I decided because I see Riyad and Phil in incredible, incredible, incredible top form. This is the only reason why, there is not another one.

"Phil, you see the last 30 minutes he played against Dortmund, he created all the chances that we had [after] 1-0, he scored the last goal with an incredible control and assist from Gundo [Ilkay Gundogan].

"And Riyad, the last month always has been so decisive, so this is the only reason why.

"He's important for the team and the club, there's no doubt about that. That was the reason for the selection."

Mahrez and Foden more creative

Since the turn of the year, during which time City have won 24 of 25 games across all competitions, Sterling has started 15 matches compared to 16 apiece for Mahrez and Foden.

Foden leads the way with 1,480 minutes, to 1,312 for his England counterpart and 1,462 for the Algeria international.

Despite missing a couple of gilt-edged chances before his winner, Foden's eye for goal has been a notable feature of City's campaign, and his seven goals for 2021 is more than Mahrez (five), who is outscored by Sterling (six) over the period in question.

However, operating nominally as wide forwards, Foden (38) and Mahrez (34) have created considerably more chances than Sterling (19) this calendar year and are second only to Kevin De Bruyne (44) in the City squad. That output has yielded six assists for Mahrez, five for Foden – level with De Bruyne - and three for Sterling.

Mahrez's 47 crosses from open play are more than any other City player in 2021, with Foden's 28 coming in behind De Bruyne (34) and Joao Cancelo (33). Sterling is back on 13, with one completed.

The former Liverpool man's dribbling prowess remains to the fore, with the most attempted (79) and completed (38) among his team-mates during this period. Mahrez boasts an impressive dribble success rate of 55 per cent thanks to 33 out of 60, while Foden has completed 26 of 53 after tormenting Dortmund at times.

Looking after the ball

This season, Guardiola's City have often seemed to play in a more controlled fashion and the manager underlined the importance of retaining possession in all areas of the field.

"There are players who are incredible to make movements in behind, runs in behind and there are others who have the quality to not lose the ball in any circumstances," he said.

"They are good at keeping the ball and sometimes, in some games, we need this more than the other situations.

"Some players suit better the way we have to play than the other ones, just for the skills, not being on bad form or whatever."

While acknowledging Sterling, Foden and Mahrez are each very well-rounded attackers, Sterling's forte lies more with the piercing runs in behind that Guardiola identifies.

Mahrez and Foden – as you might expect for a player who came through City's ranks as a central midfielder – tend to be a little more reliable in possession and this could further explain Guardiola's recent thinking.

Creative attacking players generally rack up more instances of possession lost due to the kind of passes and dribbles they attempt, so a good measure of how well they use the ball is to calculate their giveaways as a percentage of their overall touches.

In 2021, 1,067 touches and 202 instances of giving away possession amounts to 18.9 per cent for Mahrez, making him the most judicious of the trio.

Foden has lost possession 221 times from 1,008 touches (21.9 per cent) but Sterling's percentage is a little higher at 22.3 despite only 883 touches (possession lost 197 times).

This aspect might not be to the fore if Saturday's showdown with Leeds is similarly chaotic to October's 1-1 draw at Elland Road, but it is perhaps the desire for elusive Champions League glory that has persuaded Guardiola to seek greater control, leaving Foden and Mahrez as his go-to men and Sterling with unfamiliar work to do.

Bayern Munich CEO Karl-Heinz Rummenigge has urged the European champions to show unity amid reports of renewed tensions between head coach Hansi Flick and sporting director Hasan Salihamidzic.

No secret has been made of the fact the pair have had their differences, with Flick insisting after last month's Champions League win over Lazio that they "wanted to leave these things behind us".

However, following Wednesday's 3-2 first-leg loss to Paris Saint-Germain in the quarter-finals of a competition they won last year, speculation was rife that the duo were at loggerheads once again.

It is an issue that Rummenigge wants to lay to rest, insisting such talk was "superfluous" as he called on all parties to find harmony.

"We all have to pull together, have to work together harmoniously, loyally and professionally," he told Bild.

"That is my clear requirement for the sporting leadership. That has always distinguished FC Bayern.

"This topic has to come to an end. It is superfluous that we have to constantly comment, especially since we are in the last quarter of the season, are first in the Bundesliga with a seven-point lead, and despite our 3-2 loss against Paris, we still have a chance to advance in the Champions League.

"We need calm and a focus on the essentials."

The defeat to PSG ended Bayern's 19-match unbeaten run in Europe's elite competition.

Porto are not yet giving up hope of reaching the Champions League semi-finals despite a frustrating 2-0 first-leg defeat to Chelsea in the last eight.

In their designated home leg, although both matches are being played in Seville, Porto enjoyed much the better of the first half, having eight shots to Chelsea's one and a superior expected goals (xG) total of 0.86.

However, the Premier League side – who had a half-time xG of just 0.05 - scored with that sole attempt through Mason Mount.

That lead was extended in the closing stages by Ben Chilwell, meaning Porto must now win by two goals in the second leg to maintain their European hopes.

While Wednesday's defeat was tough to take, Porto have already delivered an unlikely second-leg result in their run to the quarters, advancing against Juventus on away goals after extra time despite playing more than an hour with 10 men.

And midfielder Marko Grujic told Eleven Sports: "It is difficult to accept this result because we had eight shots in the first half to their one.

"We showed that we have quality and in the second leg will try to turn the tie.

"Porto have shown in the Champions League that anything is possible. With great spirit and preparation, nothing is impossible."

Grujic made three tackles and won all five of his aerial duels in a battling display typical of this Porto side.

Indeed, as well as outshooting Chelsea 12-6 across the 90 minutes, Porto won 62.4 per cent of the sides' duels while conceding six fewer fouls.

Sergio Conceicao felt Chelsea's experience told and bemoaned the nature of the goals Porto conceded, Chilwell's coming following a Jesus Corona mistake - the first error leading to a goal his side have made in the competition this season.

But the coach could not question Porto's spirit.

"I believe we played a good game," he told a news conference. "The projections for the second leg don't change, they are the same ones we had before the first leg.

"We believe in what we do, we have confidence in our squad. When it comes to the game strategy, I think we were tactically strong tonight.

"But there were two individual mistakes that caused two goals of the opponent. We deserved more than the result we've got. We didn't deserve to be losing 2-0 at half-time of this tie.

"We are at half-time. And we will fight until the last minute of the next 90 minutes to try to turn this tie around.

"We know it's going to be difficult, we know this is the Champions League and we are a club that doesn't belong to the big five [leagues].

"I could feel it today in relation to the referee's decisions. It's not an excuse.

"Also, we don't have the same capacity of Chelsea when it comes to their experience and individual talents. We can't forget that Chelsea brought off the bench [Christian] Pulisic, [Olivier] Giroud, [N'Golo] Kante, Thiago Silva...

"And we brought in the boys and left some other youngsters on the bench.

"It doesn't mean they don't have quality, they do have quality. And playing games like tonight's, they get more experience which is crucial at this level where a small mistake is punished by your opponents."

Paris Saint-Germain sporting director Leonardo hopes to have happy news soon regarding contract extensions for star duo Kylian Mbappe and Neymar.

PSG have been in negotiations with both Mbappe and Neymar – who are contracted to the Ligue 1 champions until 2022 – amid reported interest from LaLiga.

Mbappe has long been tipped to join Real Madrid, while speculation continues to link Neymar with a return to Barcelona, where he left for PSG in 2017.

Asked about the pair after Mbappe's brace guided PSG to a 3-2 win at holders Bayern Munich in the opening leg of the Champions League quarter-final tie, Leonardo told Sky Italy on Wednesday: "I think we'll have some news that will make us all happy soon.

"We will soon get to a more concrete situation for Mbappe and Neymar contracts."

Mbappe has scored eight Champions League goals this season – the joint-most in a single campaign in the competition by a Frenchman, along with Wissam Ben Yedder in 2017-18 and David Trezeguet in 2001-02.

Since making his Champions League debut in the 2013-14 campaign, Neymar has assisted 26 goals, the most of any player in this time. The Brazilian has now been directly involved in 67 goals (41 goals and 26 assists) in 66 appearances in the competition.

Mbappe and Neymar have combined for 10 Champions League goals since their first season together in 2017-18, at least three more than any other duo over this period.

Leonardo, meanwhile, was also quizzed on Milan and Italy goalkeeper Gianluigi Donnarumma, whose contract is set to expire at season's end.

Donnarumma – who worked with Leonardo before the Brazilian returned to PSG in 2019 – has been linked with PSG, Manchester United and Chelsea previously.

"I don't talk about transfers now, [Keylor] Navas is great," said Leonardo.

Chelsea head coach Thomas Tuchel admitted Kai Havertz and Timo Werner were replaced following underwhelming performances in Wednesday's Champions League success against Porto.

Mason Mount and Ben Chilwell scored as Chelsea drew first blood against Portuguese outfit Porto in the quarter-final tie with a 2-0 victory in Seville midweek.

It was a necessary response for Tuchel, whose 10-man Chelsea were sensationally humbled 5-2 by lowly West Brom in the Premier League last time out.

But Chelsea did not have it all their own way against Porto, who were the better side for periods of the game and only just second best in terms of expected goals (xG) – 1.8 to 1.7 in the former's favour.

Havertz and Werner particularly struggled, the German duo replaced by Olivier Giroud and Christian Pulisic with 25 minutes remaining, and Tuchel explained his changes.

In his last 29 games in all competitions, Werner has missed 20 big chances, with an xG of 10.5 and 3.5 shot conversion rate.

"I accepted that it was a tough match for Timo and for Kai today," Tuchel told reporters after Chelsea won consecutive away knockout fixtures in the Champions League for the first time since 2004. "They did not have their best day but we did not deliver so well [for them].

"The connection between the deep seven players that we needed for the build-up and the front three, we lost a bit the connection to them.

"The balls we delivered were not the best balls and I could feel our two German players up front, Kai and Timo, did not play on their highest level today so I wanted to have an impact from the bench."

No side has conceded fewer goals (two) or kept more clean sheets (seven) in this season's Champions League than Chelsea (level with Manchester City on both counts).

Since Tuchel's first game in charge of Chelsea (January 27), no goalkeeper playing for a top-five European side has kept more clean sheets in all competitions than Edouard Mendy (10).

Tuchel added: "Christian has a good momentum, Oli has waited long and has good experience and memories of this stadium. We wanted to give the sign that we keep on going [in the game].

"This is the mentality in general that I like about this club and this team and that we want to implement. Once you lead, it is very hard to not play with the mentality of having something to lose. You want to keep what you have.

"But you need to go to try to win the next half and go and try to win the next duels and try to score the next goal. The best way to defend is to attack. The best way to impress the opponents is to have ball possession to be couraged and to always be a threat.

"I am happy about the impact of our substitutions. It is absolutely necessary that we have this bond between the players and we have this impact from the bench physically, but also with quality. That's why we are super happy with a big win today. The job is half done and we are aware of that and we need another top performance on Tuesday."

Bayern Munich head coach Hansi Flick said the Champions League holders were "very unlucky" to lose to Paris Saint-Germain in the opening leg of their quarter-final tie.

PSG left snowy Bavaria with a 3-2 advantage over Bayern thanks to Kylian Mbappe's memorable brace on Wednesday.

In a rematch of last season's Champions League final, Bayern had 31 attempts – 12 of which were on target – to PSG's six but they still came up short in the absence of injured star Robert Lewandowski.

Mbappe opened the scoring in the third minute and Marquinhos doubled the lead 25 minutes later, but Bayern rallied from 2-0 down thanks to Eric Maxim Choupo-Moting and Thomas Muller – who equalised on the hour-mark.

PSG, though, had the final say after Mbappe restored the visitors' lead eight minutes later as Bayern had their 19-match unbeaten streak in the Champions League snapped.

"The defeat was very unlucky for us," Flick told reporters post-game. "Paris were very efficient.

"We were dominating and had 31 shots. But I have to give a compliment to my team for their motivation and their mentality. We were not that efficient when we tried to use our chances.

"But I already told my team – we still have one game in Paris. We will do everything to turn this around into a positive result.

"It's still our goal to reach the semi-final. The result from today does not change that."

Bayern's Joshua Kimmich created 10 chances against PSG, the most by a player in a single Champions League match at the quarter-final stage or later since Mesut Ozil (12) for Real Madrid against Tottenham in April 2011.

As for team-mate Muller, he has now scored 24 goals in the knockout stages of the competition – the fourth-most of any player, behind Cristiano Ronaldo (67), Lionel Messi (49) and Lewandowski (26).

Flick, meanwhile, is set to be without key duo Niklas Sule and Leon Goretzka after they both hobbled off against PSG.

"Both have muscular problems," said Flick, whose Bayern have conceded 50 goals in 42 matches this season, as many as they shipped in total in 2019-20 – the last campaign in which they conceded more goals was 2010-11 (54).

"I don't know how long they will be out. The examination will tell us. I don't think they will play at the weekend and then we will see."

Mauricio Pochettino warned his Paris Saint-Germain players they must not let their standards slip in next week's return against Champions League holders Bayern Munich.

A Kylian Mbappe brace helped PSG to a scintillating 3-2 win over Bayern in the first leg of their quarter-final tie at Allianz Arena on Wednesday.

Ligue 1 giants PSG can seal revenge for last season's final defeat to Hansi Flick's Bayern at the Parc des Princes next Tuesday, but they had to come through some relentless spells of pressure to claim the midway advantage.

Bayern had 31 shots to PSG's six, with each side's expected goals (xG) return standing at 3.8 and 1.36 according to Opta, although Mbappe's clinical edge proved decisive.

Bayern Robert Lewandowski will be out once again for the return clash in Paris but Pochettino believes Bayern still carry plenty of threat and he wants an improvement from PSG's last-16 home leg.

PSG were 4-1 winners at Barcelona in the previous round but were outplayed by the LaLiga powerhouse for long spells of a 1-1 draw in the French capital.

"It's a totally different result from the first leg against Barca, the advantage is as small as possible," head coach Pochettino told RMC Sport.

"We hope that our performance on the return will be better than against Barcelona, that's our desire.

"But there is always a mountain of elements to take into account to obtain a result."

One of those elements are PSG's own fitness concerns.

Marquinhos went off after making it 2-0 in Bavaria, while Abdou Diallo made way at half-time and Angel Di Maria pulled up with a hamstring injury after laying on Mbappe's winner.

"[Marquinhos] felt pain in his adductors, we hope it's not serious and that he will be available quickly," Pochettino said after PSG beat Bayern away from home in the Champions League for the first time since 1994.

"I am happy with the result, with the attitude of the team which found itself in difficult situations against the best team in Europe.

"We must congratulate the players for their sense of sacrifice, we are trying to repeat this kind of performance."

PSG continued to invite Bayern to attack them after losing key Marquinhos and Diallo, with Mbappe and Neymar's prowess on the counter ultimately vindicating a high-risk tactic.

"When you win, it's always easier to explain your decisions, everyone thinks you made the right choices," Pochettino added.

"But the credit goes to the players, they are the main protagonists. It is their quality that must be highlighted.

"There were a lot of sacrifices tonight. But we still have one game, 90 minutes to play, the first leg is favourable but the return will be difficult, as we know."

Kylian Mbappe declared "I'm not here to hide" as the star forward warned he is ready to do more damage to Bayern Munich after inspiring Paris Saint-Germain to a thrilling 3-2 first-leg victory.

PSG will start the second leg of the Champions League quarter-final tie at the Parc des Princes next Tuesday on course for revenge over Bayern, who beat them in the final of Europe's premier club competition last season.

Mbappe's early goal and a clinical finish from captain Marquinhos, who was withdrawn due to injury soon after, put the Ligue 1 champions in command in the snow at Allianz Arena on Wednesday.

Eric Maxim Choupo-Moting pulled one goal back for Bayern against his former club in the first half and Thomas Muller equalised after the break.

Mbappe clinched the victory midway through the second half with his 32nd goal of another outstanding season – and his eighth in as many Champions League games, the joint-most in a single campaign by a Frenchman, along with Wissam Ben Yedder in 2017-18 and David Trezeguet in 2001-02 – to end Bayern's 19-match unbeaten run in the competition.

France international Mbappe is determined to finish off the job and put Mauricio Pochettino's PSG in the last four as they strive to lift the trophy for the first time.

"Like I said in Barcelona [after scoring a hat-trick in the previous round], I love this type of game," Mbappe said. "They haven't always gone my way and maybe they won't in the future, but I'm not here to hide. I love this kind of game and being decisive."

Mbappe added: "I love to play against the best players in world and Manuel Neuer is one of the best keepers in history.

"I felt no pressure. I didn't manage to score against him in the final [last season] but I hope to be able to do it again."

The prolific 22-year-old said PSG – who beat Bayern away from home in the Champions League for the first time since 1994 – must show the same spirit in the second leg.

"It was a superb team performance above all and I benefited from that," Mbappe said. "But it's just half-time in a huge tie. We suffered, but we suffered as a team.

"We were solid and managed to make them suffer thanks to our strong points.

"It was a difficult game against the best team in Europe right now. We played well as a team, but it's just the first game. We have to play with confidence [in the second leg] and again, like a team."

Thomas Muller was left to rue Bayern Munich's profligacy and declared "we shot ourselves in the foot" after the Champions League holders were beaten 3-2 by Paris Saint-Germain in the opening leg of the quarter-final matchup.

Kylian Mbappe scored twice in the snow at Allianz Arena on Wednesday to give visiting French champions PSG a first-leg advantage in a repeat of last season's final.

Manuel Neuer was at fault for Mbappe's early opening goal and Marquinhos capitalised on more slack Bayern defending to double PSG's lead in a thrilling quarter-final tie.

Eric Maxim Choupo-Moting reduced the deficit with a first-half header and Muller nodded home an equaliser on the hour-mark, but Mbappe's 32nd goal of the season ended Bayern's 19-match unbeaten run in the competition.

Hansi Flick's Bayern had 31 shots, 12 of which were on target, to PSG's six and it might have been a different story if prolific striker Robert Lewandowski was not sidelined with a knee injury.

Muller said Bundesliga champions and leaders Bayern must be more ruthless in the second leg at the Parc des Princes next Tuesday.

"We have to score a lot more," Muller, who has netted 24 goals in the knockout stages of the Champions League – the fourth-most of any player, behind Cristiano Ronaldo (67), Lionel Messi (49) and Lewandowski (26), told Sky.

"You can always talk about the goals you concede but I think nobody could have had any complaints had we won 5-3 or 6-3.

"Somehow we shot ourselves in the foot. Now we have to come from behind."

Choupo-Moting, who struck the crossbar before Mbappe opened the scoring in a pulsating contest, echoed Muller's sentiments.

"We just didn't score enough chances and unfortunately conceded too many," he said. "I saw the statistics. It's crazy. On another day, we score five or six, for sure.

"It's really frustrating. It was a great fight this evening. It's a shame we couldn't reward ourselves – we came back well."

Thomas Tuchel feels Chelsea's response to their humiliating West Brom defeat by beating Porto 2-0 in the Champions League will increase the team's togetherness and trust.

Tuchel had overseen 14 games without defeat since replacing Frank Lampard in January until Saturday, but his unbeaten run as Blues head coach came to a stunning end at Stamford Bridge.

The fit-again Thiago Silva was sent off only 29 minutes into his first game for two months and second-bottom West Brom capitalised in ruthless fashion after Christian Pulisic opened the scoring in a match that ultimately finished 5-2 to Sam Allardyce's men.

It was only the second time in Premier League history that Chelsea had conceded five times at home, and to make matters worse, Kepa Arrizabalaga and Antonio Rudiger were involved in a training ground bust-up in the wake of that defeat.

But on Wednesday in Seville, where both legs of their quarter-final will be played due to coronavirus travel restrictions, Chelsea were clinical.

Mason Mount's first-half opener was added to late on by Ben Chilwell, who pounced on a defensive error, giving the Blues two away goals and putting them in complete control of the tie, much to the satisfaction of Tuchel after a difficult few days.

When asked if he had been confident of a good response to the Baggies defeat, Tuchel told BT Sport: "I was pretty sure about that because I saw a response immediately after the game in the dressing room and the next day, on Monday. I was pretty sure, it wasn't a big concern.

"We had a big loss of course, but it was our responsibility, we accepted it, me included, for all of us we were ready to respond.

"There will always be setbacks in sports. The biggest challenge is to bounce back.

"We had a lot of wins together, a lot of excellent results together, then we had a loss together and now we have a reaction after a loss together.

"That brings us closer together and increases the trust, and it was important for the guys to have straight after this defeat a clean sheet. It was excellent."

Chelsea have become accustomed to clean sheets this term, with Wednesday's shutout their seventh in the Champions League this term, taking them level with Manchester City as leaders in this regard.

It was also Edouard Mendy's 10th clean sheet across all competitions since Tuchel was appointed in January, more than any other goalkeeper in Europe's top five leagues.

But the scoreline did not give a true reflection of the game, with Porto the better side for periods of the game and only just second best in terms of expected goals (xG) – 1.8 to 1.7 in Chelsea's favour.

The second leg will take place on April 13, also at Sevilla's Ramon Sanchez Pizjuan, with Chelsea set to be the home side on that occasion.

Julian Draxler said Kylian Mbappe has "quality like no one else in the world" after the Paris Saint-Germain forward scored twice in a 3-2 Champions League win at holders Bayern Munich.

PSG will start the second leg of the quarter-final tie at the Parc des Princes next Tuesday with the upper hand after ending Bayern's run of 19 games without defeat in Europe's premier club competition.

Mbappe's early strike and a second goal from captain Marquinhos, who departed soon after with a groin injury, put the Ligue 1 champions in command in the snow at Allianz Arena on Wednesday.

Bayern came storming back, Eric Maxim Choupo-Moting heading home against his former club in the first half and Thomas Muller equalising on the hour-mark.

PSG were not to be denied victory in a repeat of last season's final, though, with Mbappe scoring his 32nd goal of the season – and his eighth in as many Champions League games – midway through the second half. 

PSG midfielder Draxler was full of praise for Mbappe after his latest finishing masterclass.

"That's what he is there for because he has the quality like no one else in the world, we need his speed and when he has chances he scores and that's really important for us and especially tonight," Draxler told BT Sport.

Draxler knows it is far from being job done ahead of the second leg in the French capital and said Bayern are still a huge threat without injured striker Robert Lewandowski.

The German, whose PSG beat Bayern away from home in the Champions League for the first time since 1994, added: "We had a lot of work to do tonight because the way they play is really dangerous with or without Lewandowski.

"it's going to be the same hard work in the next game against them. We will play at home in Paris and we will try to win and go through to the next round."

A moment to sum up the unflinching, non-negotiable terms of Bayern Munich and Paris Saint-Germain's instant Champions League classic came just before the hour mark at the Allianz Arena.

Bayern head coach Hansi Flick hollered loudly and gestured insistently for his team to push up, to attack more, having pulled the deficit back to 2-1 but seen no reward thus far for their second-half bombardment of a PSG goal expertly patrolled by Keylor Navas.

Seconds later, Kylian Mbappe burst clear into the snow-flecked open spaces. "High line? Fine by me."

Manuel Neuer stared into the whites of the eyes of the forward phenomenon who embarrassed him in the third minute. Not this time.

The experienced goalkeeper stood firm to save, although Mbappe had already embarrassed himself slightly by straying needlessly offside. Who was going to catch him?

It was a night where excellence and errors were were ladled into a heady cocktail to be hastily knocked back and refilled over and over, the cagey feel of last season's final blown away in the blizzard.

Bayern were without Robert Lewandowski and Serge Gnabry and lost Leon Goretzka and Niklas Sule before half-time. Marquinhos hobbled off after making it 2-0 to PSG – Neymar laying it on as he did for Mbappe to move on to 25 assists in the Champions League, more than any other player since his 2013-14 debut in the competition.

Left-back Abdou Diallo was the latest victim of a game that should have come with a health warning to those involved, meaning the visiting defence that started the second half was even more threadbare.

Still, Mauricio Pochettino instructed his troops to sit goadingly deep, inviting Bayern on to leave brutal counters for Mbappe and Neymar on the table.

Attacking with their usual uncompromising intensity without the figurehead of Lewandowski appeared fraught with danger, but Bayern did it anyway.

The often maligned Eric Maxim Choupo-Moting headed home Benjamin Pavard's cross to reduce the arrears, although there were moments when Leroy Sane flashed low balls across the six-yard box to nobody in particular when Lewandowski's absence was keenly felt.

In his own inimitable fashion, Thomas Muller sought to shoulder the burden left by his usual strike partner.

When faced with the likes of Mbappe and Neymar, Muller will never match them for aesthetics. His first act of the match was to turn away from a Lucas Hernandez pass, make a multi-limbed attempt to control the ball and somehow send it back into the full-back's path for a shot on goal.

It often doesn't look pretty, but Muller finds a way. As he did when converting Joshua Kimmich's free-kick to equalise with an hour played – one of an astonishing 10 chances created over the course of the 90 minutes by the majestic Bayern midfielder.

Muller's 24 goals in Champions League knockout games is fourth on the all-time list behind Cristiano Ronaldo, Lionel Messi and Lewandowski

Five minutes after scoring, he received treatment for a bleeding cut behind his ear. Five minutes from time, he was splayed out in the PSG penalty area having seen a shot on the turn deflected just wide.

By that point, Mbappe had tormented Sule's replacement Jerome Boateng and drilled in a low strike to re-establish PSG's lead and his own advantage in the duel with Neuer, which is sure to conclude thrillingly in Paris next week.

Because, even considering the misadventure and the walking wounded – Angel Di Maria set up Mbappe's winner before a hamstring injury added him to the list of casualties – Flick and Pochettino are unlikely to divert from this script.

Flick will reason all teams in the world are vulnerable to Mbappe and Neymar, but he will look to PSG's second-leg trials against Barcelona and Manchester United in the recent past and hope to reawaken those ghosts. This was Bayern's first Champions League defeat in 20 games so self-belief should be intact.

Pochettino has Mbappe with eight goals to his name in this season's competition and a brace at Bayern to sit alongside his hat-trick at Camp Nou. Him and Neymar feel like they're on a mission and unwilling to take a backwards step.

Next Tuesday cannot come around quickly enough. It probably won't stay 3-2 for long.

Kylian Mbappe scored twice as Paris Saint-Germain ended holders Bayern Munich's 19-match unbeaten Champions League run by winning a quarter-final first-leg thriller 3-2.

The lethal Mbappe's 31st goal of the season early on in the snow at Allianz Arena on Wednesday and a header from captain Marquinhos put PSG two goals up in a repeat of last year's final.

Eric Choupo-Moting pulled one back against his former club in the first half and Thomas Muller levelled after the break, but Mbappe had the final say with a third away goal for PSG.

Mbappe's double, which took his tally to eight goals in as many Champions League games this season, gave Mauricio Pochettino's side the upper hand heading into the second leg at the Parc des Princes next Tuesday.

Choupo-Moting headed against the crossbar early on, but it was PSG who took the lead with an Mbappe strike in the third minute.

The France striker controlled a pass from Neymar, sent off in the defeat to Lille on Saturday, before unleashing a right-footed shot that squirmed under Manuel Neuer.

Julian Draxler had a goal ruled out as Mbappe was marginally offside before PSG goalkeeper Keylor Navas superbly kept out Leon Goretzka's close-range header and a Benjamin Pavard drive.

PSG caught Bayern napping again to double their lead 28 minutes in, Marquinhos breaking the offside trap to control Neymar's pinpoint cross and calmly slotting beyond Neuer.

Marquinhos was replaced by Ander Herrera with a groin injury soon after, and his presence was missed at the heart of the PSG defence when Choupo-Moting headed home Pavard's cross eight minutes before the end of a pulsating first half in which Bayern lost injured duo Niklas Sule and Goretzka.

Neuer denied Neymar from close range and Alphonso Davies was on hand to clear Angel Di Maria's goal-bound shot off the line early in the second half.

The holders were level on the hour-mark, with an unmarked Muller rising to nod Joshua Kimmich's whipped free-kick beyond a helpless Navas.

Muller went off for treatment with blood pouring from his head moments later and Mbappe inflicted more pain on Bayern midway through the second half, driving into the area before firing inside the near post through Jerome Boateng's legs.

David Alaba came close to an equaliser when his measured shot clipped the outside of the post as PSG clung on for a precious advantage.

Chelsea have one foot in the Champions League semi-finals thanks to a 2-0 away win over Porto, with Mason Mount's first-half effort added to late on by Ben Chilwell.

Thomas Tuchel's men came into the contest on the back of an embarrassing defeat to struggling West Brom but managed to put that behind them on Wednesday, even if they were not entirely impressive.

Back on the scene of their 4-0 group-stage win over Sevilla due to coronavirus travel restrictions, Chelsea were second best for significant parts of the game but opened the scoring through Mount just past the half-hour mark.

Porto, without key men Sergio Oliveira and Mehdi Taremi due to suspension, were unable to apply the required finishing touch to some of their eye-catching build-up play and a defensive error gifted Chilwell the opportunity to seal what looks like a commanding first-leg advantage.

For all the talk of Porto representing a dream draw for Chelsea, it was Sergio Conceicao's men who looked brighter in the early exchanges, with Luis Diaz having an effort crucially blocked a few moments before Matheus Uribe saw a fine volley land on the roof of the net rather than in it.

Chelsea had another escape in the 24th minute as Edouard Mendy just about managed to stop Otavio scoring direct from a corner and Zaidu Sanusi put the rebound over.

But a period of Chelsea pressure followed and they capitalised, Mount producing a gorgeous turn to beat Chancel Mbemba on the edge of the box before firing into the bottom-left corner.

Porto began the second period encouragingly as well, Diaz seeing a curling effort go agonisingly wide from 20 yards after excellent work from Wilson Manafa.

An effort from distance at the other end – courtesy of Antonio Rudiger – led to Agustin Marchesin spilling at the feet of Timo Werner, who squared to Kai Havertz and he missed an open goal, though his blushes were spared, to a certain extent, by the offside flag going up against his compatriot.

Not that Chelsea were made to rue that situation as, soon after Christian Pulisic had hit the post on the break, Chilwell made sure of the victory as he pounced on a loose touch by Jesus Corona and tucked into an empty net after rounding Marchesin.

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