Champions League semi-finals – where the unthinkable occurs.
From late goals to the impossible comeback, and the occasional red card, BBC Sport has taken a look back at some of the most remarkable ties of recent years and it is up to you to choose which is the best of the best.
So what are you waiting for? Read below and get voting.
Real Madrid 6-5 Manchester City (2022)
Star Players: Karim Benzema, Vinicius Jr, Rodrygo, Kevin de Bruyne, Riyad Mahrez, Phil Foden
A thrilling first leg at Etihad Stadium saw Pep Guardiola overcome his old rivals on his most recent pursuit of Champions League glory. His side battled with Real Madrid to take a 4-3 lead into the second leg.
In a game which was not short of chances, Riyad Mahrez extended City’s advantage at the Bernabeu to leave Carlo Ancelotti’s men needing two goals just to take the tie to extra time.
Substitute Rodrygo kick-started an incredible turnaround, putting two efforts past Ederson in as many minutes right at the end of normal time.
To Manchester City’s disbelief they now had to put up with a fully enthused Madrid side, who managed to grab a place in the Champions League final thanks to a 95th-minute penalty from Karim Benzema. Pure drama.
Barcelona 3-4 Liverpool (2019)
Star players: Lionel Messi, Luis Suarez, Philippe Coutinho, Gerard Pique, Divock Origi, Sadio Mane, Jordan Henderson, Trent Alexander-Arnold
Finalists the previous year, Jurgen Klopp’s side looked as though they were heading out after a goal from Luis Suarez and a Lionel Messi double – including a dream free-kick – condemned them to a 3-0 first-leg loss at the Nou Camp.
Liverpool needed a second-leg miracle. Usual starters Mohamed Salah and Roberto Firmino were missing – but up stepped Divock Origi.
The striker pulled one back in the first 10 minutes and, as belief rose inside a fervent Anfield, midfielder Georginio Wijnaldum popped up with two goals in two minutes to level the tie.
Rarely have you seen Barcelona so rattled. Messi was as anonymous as he was omnipresent just a week earlier, and when Origi swept in Trent Alexander-Arnold’s quick corner with 11 minutes left the incredible had become reality.
Tottenham 3-3 Ajax (2019)
Star players: Lucas Moura, Son Heung-min, Cristian Eriksen, Donny van de Beek, Dusan Tadic, Hakim Ziyech, Matthijs de Ligt
Ajax had been the breakout side of 2018-19, beating Real Madrid and Juventus to set up a tie with Tottenham. So it was perhaps no surprise when they left London with a 1-0 lead.
In Amsterdam things went from bad to worse for Tottenham. With no Harry Kane up front, they were facing a mountain to climb when Matthijs de Ligt and Hakim Ziyech made it 3-0 on aggregate before half-time.
Lucas Moura inspired a magnificent comeback. The forward scored twice in the space of four minutes to leave the visitors needing one goal to go through, and after Jan Vertonghen had headed against the post, Moura’s low drive completed his hat-trick to give his side victory on the away goals rule and set up an all-English final against Liverpool.
Borussia Dortmund 4-3 Real Madrid (2013)
Star players: Robert Lewandowski, Marco Reus, Mario Gotze, Mats Hummels, Cristiano Ronaldo, Mesut Ozil, Xabi Alonso, Sergio Ramos
This was the first year Jurgen Klopp came to the attention of many in the UK, with Borussia Dortmund scoring twice in added time to beat Malaga in the previous round. Still, they weren’t fancied to pull up too many trees against Real Madrid, but produced a remarkable first-leg display at the Westfalenstadion.
Robert Lewandowski – who would leave a year later for free – scored four times as Real were routed 4-1. The Polish forward was too mobile for Pepe and Sergio Ramos, scoring a second-half treble in front of the yellow wall.
Real needed a 3-0 win in the second leg to go through but a fine performance from Klopp’s men looked to have done enough. However, two goals in the last 10 minutes, from Karim Benzema and Sergio Ramos, ensured a nervy finale as Dortmund just about hung on.
Chelsea 3-2 Barcelona (2012)
Star players: Frank Lampard, Didier Drogba, Ramires, John Terry, Lionel Messi, Alexis Sanchez, Cesc Fabregas, Andres Iniesta
The first leg at Stamford Bridge saw Barcelona come close, but it was Chelsea, through Didier Drogba, who edged ahead 1-0.
Back to the Nou Camp and it was the anchorman Sergio Busquets who popped up with a tap-in to level the aggregate scores. It was one-way traffic and soon Chelsea were seriously up against it when captain John Terry saw red for a knee in the back of Alexis Sanchez.
Messi then teed up Andres Iniesta to make it 2-1 on aggregate and Chelsea needed a goal. Ramires was the unlikely man to find it, a superb finish to chip Victor Valdes – all of this before half-time.
Lionel Messi then missed a penalty, planting it against the crossbar, before Barcelona, facing defeat on away goals, were caught on the break. Fernando Torres had the whole half to run into, rounded Valdes and rolled in to cap a remarkable win.
Barcelona 1-1 Chelsea (2009)
Star players: Lionel Messi, Xavi, Andres Iniesta, John Terry, Frank Lampard, Didier Drogba
After a goalless draw at the Nou Camp, Chelsea were on course for a second straight final when Michael Essien scored one of the great forgotten goals, a 25-yard volley which smashed in off the underside of the crossbar.
Chelsea felt they should have had four penalties, and even their staunchest critics would have to concede that they should have had at least one, most obviously for a handball from Gerard Pique.
Ovrebo said no – although he did send off Eric Abidal – and deep into added time Andres Iniesta scored superbly from Lionel Messi’s pass.
Chelsea couldn’t believe it – remember Didier Drogba’s “disgrace” rant straight down the camera? – but Barca advanced on away goals to play Manchester United in the final.
Chelsea 4-3 Liverpool (2008)
Star players: Didier Drogba, Michael Ballack, John Terry, Fernando Torres, Xabi Alonso, Steven Gerrard
Chelsea came up against their previous semi-final rivals Liverpool, who knocked them out in the last four in both 2004-05 and 2006-07.
In a cagey first leg, Liverpool had a one-goal lead thanks to a close-range shot from Dirk Kuyt. However, Chelsea were offered a lifeline in the dying minutes as John Arne Riise nodded a clearing header into his own net.
At Stamford Bridge, Didier Drogba gave the Blues the lead in the opening half but opposing forward Fernando Torres levelled after the break.
Extra time was needed and Frank Lampard converted a penalty to put Chelsea 3-2 ahead on aggregate before Drogba stepped up again to score his second of the night.
Ryan Babel’s audacious effort reduced the deficit but it was not enough and Liverpool would not make another semi-final until 2017-18.
AC Milan 5-3 Man Utd (2007)
Star players: Kaka, Clarence Seedorf, Paolo Maldini, Cristiano Ronaldo, Wayne Rooney
A fantastic start to the tie for Manchester United saw Cristiano Ronaldo put them ahead in the first 10 minutes.
But then Kaka entered the scene. The 2007 Ballon d’Or winner collected a pass and glided past United with ease before planting a fine low shot into the far corner.
It was a Kaka masterclass and the Brazilian added a beautiful solo goal with his flair too much for United defenders Gabriel Heinze and Patrice Evra.
Wayne Rooney did get a leveller and then powered in a superb shot from long range in stoppage time to give United a slender 3-2 lead at the halfway stage of the tie.
At the San Siro, it was Kaka once again who proved the difference and his delicious left-footed drive put Milan back ahead on away goals early on.
Clarence Seedorf then beat Edwin van der Sar from the edge of the area and Alberto Gilardino provided the coup de grace.
Real Madrid 3-4 Juventus (2003)
Star players: Roberto Carlos, Luis Figo, Zinedine Zidane, Ronaldo, Gianluigi Buffon, Lilian Thuram, Pavel Nedved, Alessandro del Piero, David Trezeguet
The first leg was in Madrid and Ronaldo opened the scoring with a superb finish from the edge of the area.
Juventus grabbed an away goal on the stroke of half-time when David Trezeguet stabbed in a deflected shot from Alessandro del Piero.
Real were back in front when Roberto Carlos’ piledriver went through a sea of players and it was on to Turin.
Trezeguet spurred Juve’s second-leg comeback as his close-range effort put the home side ahead on away goals.
Real needed a goal, on came Ronaldo, and he won a penalty with a trademark body-swerve. Up stepped Luis Figo, but Gianluigi Buffon saved his spot-kick.
It was the key moment as within five minutes Pavel Nedved had outpaced Fernando Hierro to fire in, and while Zinedine Zidane scored against his old team, it was too late.
Man Utd 4-3 Juventus (1999)
Star players: Ryan Giggs, David Beckham, Roy Keane, Dwight Yorke, Zinedine Zidane, Antonio Conte, Edgar Davids, Filippo Inzaghi
The 1999 Treble win for Manchester United is etched into the public consciousness, even if the final against Bayern Munich was largely quite dull – until the incredible finale.
The two-legged semi-final against Juventus was dramatic from start to finish. The first leg at Old Trafford saw future Chelsea boss Antonio Conte strike the Italian giants into an early lead before a second-half United siege finally bore fruit when Ryan Giggs hammered into the roof of the net in the last minute.
With the tie all square at 1-1, Juve were favourites in the second leg, even more so when Filippo Inzaghi scored twice in the first 11 minutes. Game over? Nobody told Roy Keane. His header gave United hope and he led by example throughout, despite picking up a yellow card that would rule him out of the final.
Dwight Yorke headed United level on the night – and ahead on away goals – before half-time in this classic encounter.
Inzaghi had a hat-trick ‘goal’ correctly ruled out for offside, before Andrew Cole tapped in to seal a famous win for United.
