This was a ferocious occasion, a game to illuminate the latter stages of the Champions League played between two foes for whom familiarity is stoking animosity. But, in the end, there was to be no ‘remontada’ for Barcelona. This was Atletico Madrid’s tie.

Even while suffering a rare home defeat, their first at home in the knockout stage of this competition since 1997, Diego Simeone’s side prevailed 3-2 on aggregate courtesy of Ademola Lookman’s critical first-half riposte. They progress into a first semi-final since 2017, and will face either Arsenal or Sporting CP.

For Barca, having now gone 15 Champions League games without a clean sheet, there was only regret amid the frenzy.

It had looked unlikely to pan out that way. Atletico’s lead from the first leg, remarkably, had been wiped out by the midway point of the first half.

Lamine Yamal tested Juan Musso after 33 seconds, but, unperturbed, was soon capitalising on ex-Barca defender Clement Lenglet’s error and a ragged back line to slide the visitors ahead. The home side were being overrun, and Ferran Torres’ thunderous finish across Musso and into the far top corner drew Barca level on aggregate.

Yet the home side posed a threat of their own. With the outstanding Antoine Griezmann pulling the strings, Marcos Llorente exploited that trademark high line and squared for Lookman to side-foot the hosts back ahead in the tie before the break.

There was no let-up in the frenetic nature of the tie upon the resumption. Torres thought he had drawn the sides level on aggregate, only for the VAR to rule him offside, with Joan Garcia doing well to deny Robin Le Normand from point-blank range at the other end.

Then, just as in the first leg, Barca were left bemoaning the dismissal of one of their centre-halves. It took a VAR intervention to confirm Eric Garcia’s departure after he clipped substitute Alexander Sorloth as the Norwegian bore down on goal. The visitors argued Jules Kounde would have recovered at his team-mate’s side, but referee Clement Turpin was unmoved, leaving Barca chasing their deficit with 10 men.

The drama was still maintained until the end, with Ronald Araujo heading over the bar in the dying seconds, before the final whistle brought the locals some relief. Here, Dermot Corrigan, Tim Spiers and Thom Harris dissect the key talking points from the Metropolitano.

How did Barca claw back the first-leg deficit?

Before we knew of the breathless, goal-filled contest that was to unfold, Barcelona’s chances of a comeback seemed to hinge on a fast start.

They could not have flown out of the blocks any quicker.

Right from the first whistle, an inspired Yamal drove Barcelona forward like a man possessed. He drew a fine save from Musso after just 31 seconds following a typically incisive run and curling shot towards the bottom corner, immediately looking to rouse his team-mates with waving arms and laser-like focus in his eyes.

The irrepressible Lamine Yamal (Angel Martinez/Getty Images)

Barely three minutes later, the 18-year-old pounced on a mistake from Lenglet to nick the all-important first goal. Within another five minutes, he cushioned a spinning pass into the path of Dani Olmo to send the Spaniard through on goal, only for Barca to be denied by another Musso save.

To see such an outrageous footballing talent with absolute determination to impact the game was a joy to behold.

The early exchanges did not all go Barcelona’s way, as Atletico looked to feed on a frenzied atmosphere in the Metropolitano. The game was wide open, end-to-end, a feeling enhanced by the visitors’ courageous high-line approach. Atletico themselves moved forward with verve, desperately moving the ball as quickly as they could to the free winger — usually Lookman — to take on his man and drive inside.

But it would be Barcelona to score again, two slick passes from Fermin Lopez and Olmo slipping the ball through to Torres to finish smartly into the far corner. They might have completed their comeback after 25 minutes, had Musso not denied Lopez from point-blank range, before familiar defensive woes saw them pegged back in the next act.

Few games in recent memory have started with such intensity, chances crafted by skill and sheer willpower alone.

At an average of 24 years and 347 days, this was Barcelona’s youngest ever starting XI in a Champions League knockout game, and it was difficult not to be impressed by the way they took the opening 25 minutes by the scruff of its neck.

Thom Harris

Clement Lenglet’s unhappy reunion

Surely the focus for Atletico had been to keep things tight defensively through the opening stages and not give Barca an easy way back into the tie. But if that was the plan, it was wrecked in those opening four minutes.

It was Lenglet who passed the ball straight to Torres, who immediately slipped Yamal free behind the defence, and the youngster nervelessly finished low into the Atletico net for 1-0. That set the tone for Lenglet’s night of toil.

This was definitely not the teak-tough defending for which Simeone’s side have been famous in the Champions League over the years. Collectively, there were too many gaps in the back line, but the spotlight fell on Lenglet, a Barcelona player from 2018 to 2022, and remembered at the Camp Nou for his unfortunate contributions to their Champions League exits against Roma, Liverpool and Bayern Munich during that period.

He endured a torrid time. It may have been too easy for Olmo to slip Torres down the side of Le Normand, but Lenglet’s attempt at recovery amounted to a shove in the back on the one-time Manchester City forward, which actually pushed him further away and gave him a kinder angle from which to slam in his left-foot finish.

Clement Lenglet (left) attempted to push Ferran Torres off course, but the Barcelona forward’s finish was unerring (Maria Gracia Jimenez/Soccrates/Getty Images)

It could have soon been even worse when Lenglet passed the ball straight to Yamal again, with only an excellent save from Musso stopping Fermin from putting Barca 3-2 up on aggregate.

The 30-year-old Frenchman, who terminated his contract at Barcelona in the summer of 2025, is now Atletico’s fifth-choice centre-half. The home fans were ruing the injuries to David Hancko and Jose Maria Gimenez, and a suspension for Marc Pubill, which saw Simeone turn to him for such a huge game.

Dermot Corrigan

Ademola Lookman is learning from a master

The big question ahead of this second leg was not whether Barcelona could score enough goals to go through, but whether they could keep Atletico out at the other end.

Barcelona’s front line, even without Raphinha, is one of the best in the world, but with Griezmann daintily pulling the strings for Lookman, the hosts gave as good as they got.

It has been just over 10 years since London-born Lookman made his debut for Charlton Athletic in the English Championship, and now, aged 28, he looks to be reaching his peak, having joined the Spanish side for around £30million ($40.7m) in January from Atalanta.

He scored what somehow proved to be the game’s decisive goal after 31 minutes, something you would not have predicted at the time, given how the two sides were knocking seven bells out of each other with attack after attack during a breathtaking start to the match.

Ademola Lookman evades Jules Kounde to thrust Atletico Madrid back ahead in the tie (Angel Martinez/Getty Images)

It was a strikingly similar goal to one scored in Atletico’s Copa del Rey win over Barca at Metropolitano a few weeks ago, with Griezmann brilliantly freeing Marcos Llorente with a first-time swish into the same spot between Gerard Martin and Joao Cancelo that Atletico have targeted successfully in recent meetings between the teams.

The instant Griezmann released his pass, Lookman was on the charge into the box, and he gobbled up Llorente’s cross to edge Atletico back ahead on aggregate.

It was his sixth goal (plus four assists) in 16 appearances for Atletico. Lookman has embraced the responsibility of playing for the biggest club of his career to date, and it must help having the magician Griezmann painting pictures with passes behind him.

When the genius 35-year-old Frenchman departs for MLS and Orlando City this summer, La Liga and the Champions League will be poorer places for it.

Tim Spiers

Blood to accompany the toil

This was the 10th clash between Atletico and Barca across La Liga, Copa del Rey and Champions League in just 16 months, so some edge and bite pre-game was no surprise, especially with both clubs so desperate for some Champions League success this year.

Barca had been unhappy about the refereeing in last week’s first leg at Camp Nou, going as far as to make an official complaint about a possible handball penalty missed by the officials. The Atletico hierarchy found this “strange”, sources within the club told The Athletic pre-game. UEFA said the complaint was “inadmissible”. But perhaps the aim had been to put the referee, Clement Turpin, and VAR official Jerome Brisard on notice.

The state of the Metropolitano pitch was another focus ahead of the return, with Barca’s complaints about it being too slippery and the grass too long provoking a mixture of annoyance and disdain at Atletico.

Once the game started, there did not seem to be any issues with the surface, but there was plenty of bite to the proceedings as the momentum of the game and the tie ebbed back and forth.

Atletico Madrid’s Juan Musso catches Fermin Lopez in the face after saving the forward’s point-blank header (Diego Souto/Getty Images)

Barca were angered in the first half when Fermin was caught bang on the nose by the boot of Atletico goalkeeper Musso, with the midfielder requiring lengthy attention to staunch the blood flow. The contact did appear to be accidental, but the break in play actually allowed the home side to take stock. They scored the game’s decisive goal shortly afterwards.

After half-time, it was Atletico upset when Gavi raised an arm in an aerial challenge with the much taller Matteo Ruggeri. The Spaniard’s elbow caught the Italian on the cheek and drew blood again.

Matteo Ruggeri lies prone on the turf nursing a head injury (Jose Breton/Pics Action/NurPhoto via Getty Images)

Even after Garcia’s red card left Barca reduced to 10 men, there was still plenty of tension all around the stadium through the final stages, with Simeone regularly urging fans to make more noise as they looked to hold onto their narrow advantage.

On the final whistle, the Argentine jumped into the arms of his coaching staff in celebration, before running onto the pitch to hug his players and raise his arms to the stands. The glee from everyone at Atletico was clear.

Dermot Corrigan

Lamine Yamal: Brilliant but beaten

Hansi Flick claimed Barcelona did not need a miracle to go through despite their 2-0 deficit. Well, in Yamal, they have the football equivalent of a miracle, and he so nearly dragged them through on his own.

No one else in the Barca side can match his influence or brilliance. The teenager started the match fully well aware of that much.

Within the first 31 seconds, he had almost reduced the arrears, driving forward into the box with two defenders clawing at him and producing a fine save from Musso. The intent was clear. Within five minutes, Yamal had scored, taking advantage of Lenglet’s dopey dithering to receive Torres’ pass and taking one touch to roll it past a helpless Musso.

As Atletico defended with all the composure of puppies attempting to navigate a slippery kitchen floor, Yamal bent a trivela cross onto Pedri’s head, and it should have been 3-0 after just 25 minutes.

A disappointed Lamine Yamal at the final whistle (Angel Martinez/Getty Images)

Atletico left-back Ruggeri was given a torrid evening, one he won’t want to revisit. He needed help from two or three team-mates at a time to contain the Spaniard, who was the sauntering driving force as his team knocked at the Atletico door, with 70 per cent possession and 2.11 xG.

Ultimately, they came up short, but the brilliant Yamal, as last year in the semi-final against Inter, could not be faulted whatsoever for his effort or his genius.

Tim Spiers

Will Atletico fancy their chances in the semi-final?

This is a monumental result for Atletico Madrid, as the earth-shaking atmosphere at the Metropolitano might have given away.

It is the second time Simeone’s side have beaten Barcelona dramatically over two legs in the space of six weeks, following up their 4-3 slog in the Copa del Rey with an even louder statement win here. It sees them through to their first Champions League semi-final in nine seasons, against either Arsenal or Sporting CP, both of whom they will fancy beating given what they have just had to overcome.

Diego Simeone on the touchline (Alberto Gardin/Eurasia Sport Images/Getty Images)

Barcelona were irresistible at times, with the slick passing of Pedri and the never-ending invention of Yamal on the wings, but Atletico somehow held on to find their way through. Griezmann provided the composure and craft on the ball; Julian Alvarez, Marcos Llorente and Giuliano Simeone offered hard-running on the break, while their relentless manager breathed energy from the bench.

There were signs of their classic defensive grit under Simeone, moments in which they would collapse into a 6-4 shape to repel the waves of Barcelona attacks. But Atletico were also positive and incisive on the ball, attacking with almost as much purpose with which they protected their slender lead.

Whoever they face in the final four, Atletico will be formidable opposition.

Thom Harris

What next for Barcelona?

Wednesday, April 22: Celta Vigo (Home), La Liga, 8.30pm UK, 3.30pm ET

What next for Atletico?

Saturday, April 18: Real Sociedad (La Cartuja, Seville), Copa del Rey final, 8pm UK, 3pm ET