Wednesday's key storylines:
• The early kick-offs offered up plenty of goals as Real Madrid edged AEK Athens 3-2 thanks to a last-gasp winner, while Liverpool lost 3-2 at Fenerbahce and dropped their first points of the campaign
• Manchester City won a thriller in RB Leipzig after a late Erling Haaland winner, while Arsenal held on to beat Slavia Prague and stay unbeaten in Europe
• Dortmund ended Betis' perfect record with a tense win, while FC Porto secured their first points after thrashing Napoli
• Elsewhere, Como were the story of the night as they demolished Lens 9-1 in the joint-biggest win in UCL history; Club Brugge edged past PSV and Viking thrashed Sabah in Norway
Live updates:
Wednesday, November 4th
23:35 CET - Matchday four is now in the history books as a thrilling two nights of action come to a close, and with it, so does our coverage! Goodnight.
See all the Champions League scores here!
23:04 CET - There was no last-minute drama, which means Man City and Arsenal have secured narrow away wins, and Dortmund held on to a vital win against Betis.
22:54 CET - It is set to be a nervy conclusion for Arsenal in Prague, meanwhile, as Slavia have pulled one back! But not long left now for Mikel Arteta's side.
22:53 - Over quickly to Porto, where the hosts have put on a clinic in the second half against 10-man Napoli and now lead 4-1.
22:45 CET - What a game it has been in Leipzig and Man City look to have the final say after Erling Haaland stretched brilliantly to guide a low-driven cross into the back of the net.
Does this thriller still have a surprise in store for us?
22:37 CET - Over to Dortmund and Real Betis have equalised on the road after a clinical finish by super-sub Aitor Ruibal!
But it is short-lived for Betis as Dortmund are once again ahead after a great strike from exciting teenager Konstantinos Karetsas.
Will that be the winning goal?
22:35 CET - It has gotten a bit silly in Lens meanwhile, as Como now lead 8-1 as Lens have fallen apart and look to have given up.
22:30 CET - Leipzig have come from behind again to equalise, and it is another brilliant goal in that game! Antonio Nusa was a player we highlighted before the game as a dangerous player and the Norway winger has equalised after a smart finish following a pinpoint through ball by Christopher Nkunku.
22:22 CET - A top-class goal from Man City as they restore their lead in Leipzig! An inch-perfect curling delivery was finished off with aplomb by Enzo Fernandez - a man who rarely misses with his head.
22:20 CET - Meanwhile, Dortmund have found the breakthrough at last, and it comes from in-form striker Fabio Silva after he reacted quickest to a Jobe Bellingham parried effort. Big goal for Dortmund.
22:09 CET - I told you! The goals are flying in once again as Como have carried on where they left off and now lead 4-0 in Lens.
And RB Leipzig are level against Man City thanks to full-back Ridle Baku catching Donnarumma out at his near post.
A clever finish but horrendous goalkeeping!
22:07 CET - Games are just getting back up and running, which means only one thing... Time for more goals, chaos and drama.
21:53 CET - That is half-time around the grounds, with Man City 1-0 up against RB Leipzig and Arsenal cruising in Prague. Elsewhere, impressive Como are 3-0 up at Lens, with FC Porto and Napoli level at 1-1 and Dortmund and Betis still goalless.
See all the scores via the link above.
21:40 CET - There's been a breakthrough in Leipzig, with Manchester City taking a 1-0 lead over their hosts thanks to a rather fortunate own goal, gifted to them by Castello Lukeba, who slid the ball into the net trying to clear.
Over in Prague, Viktor Gyokeres has put Arsenal 2-0 up against winless Slavia as the unbeaten Gunners motor towards another victory.
21:35 CET - Another in-form forward is Como's Anastasios Douvikas, and the Greek already has a brace this evening, firing Como into a 2-0 lead over Lens before half-time.
Douvikas already has three league-phase goals ahead of this evening, so like Tresoldi, he's now up to five for the campaign. As it stands, they both lead the scoring charts in the Champions League.
21:26 CET - One man who has been on fire this season is Club Brugge's Nicolo Tresoldi, and the Italo-German has just put the Belgian side into a 1-0 lead over Dutch champions PSV for what is his fifth goal of the league phase already!
Clubs are reportedly queuing up to sign the 22-year-old striker.
21:13 CET - Well, no rest for the wicked; we already have a few goals around the grounds...
Noni Madueke put Arsenal into a 1-0 lead over Slavia in Prague after just nine minutes, with FC Porto, Como and Sabah all ahead early in their respective matches, too.
20:55 CET - It's been some start to the evening's drama, and we're only two games into the nine on offer. It's time to turn our focus to the seven late kick-offs now, with Man City, Arsenal, Dortmund and Napoli all among the sides in action.
Go through the link above to follow any match live!
20:40 CET - That's full-time in the early matches, and Real Madrid have edged AEK Athens 3-2 thanks to Federico Valverde's last-minute winner, while Liverpool have been stunned by Fenerbahce by the same scoreline in Istanbul.
Real's narrow win means they remain perfect in the league phase after four rounds, while Liverpool have dropped their first points of the campaign after having led the match 2-1 with 20 minutes to go.
Follow the links to see all the key stats and more!
20:36 CET - Federico Valverde has scored a long-range stunner to put Real Madrid 3-2 up against AEK very late on. Surely, that's the game. Gutting for the hosts, brilliant from Valverde as he rifles the ball in from beyond the edge of the area.
20:25 CET - What did we say? There's been another goal in Istanbul, and it's the hosts again, with Vedat Muriqi firing Fenerbahce into a 3-2 lead late on against Liverpool. It's turned into a thriller!
20:22 CET - Well, the goals are truly flying in now. Kylian Mbappe has finished off a swift move to make it 2-2 between Real and AEK in Athens. Blink, and you'll miss another goal!
20:19 CET - AEK Athens have taken the lead over Real Madrid for the second time, thanks to a brilliant goal from Stavro Pilo, finishing off a move that started deep in their own half.
And over in Istanbul, Fenerbahce have responded right away to Liverpool's second goal! Englishman Archie Brown has scored to make it 2-2, just as we were taking in Isak's strike for Liverpool.
20:16 CET - Alexander Isak has fired Liverpool into a 2-1 lead over their hosts Fenerbahce in Istanbul. The Swedish striker came off the bench and only needed three minutes to make his mark.
19:50 CET - The lineups are in for the late games now, with Manchester City, Arsenal, Dortmund and Napoli all in action from 21:00 CET. Follow the link above to see all the match info and lineups.
Over in Leipzig, Man City are fielding a strong XI with Erling Haaland, Enzo Fernandez and Rayan Cherki all starting against the Red Bull outfit.
19:35 CET - The half-time whistle has gone in both the early kick-offs, and it is 1-1 in Istanbul and Athens at the break, meaning there is work to do for Andoni Iraola and Jose Mourinho.
19:27 CET - Real Madrid have equalised in Athens, and it's another quality goal as Jude Bellingham emphatically finishes off a move that reminded viewers who the big favourites are this evening.
19:18 CET - It is 1-1 in Istanbul; meanwhile, after two deflected goals soon after each other. Liverpool took first blood as teenager Trey Nyoni scored his first goal for the club before Mason Greenwood equalised minutes later from a free-kick, which took a wicked deflection on the way in.
19:04 CET - The first goal of the night hasn't gone to Liverpool or Real Madrid but to Los Blancos' opponents AEK Athens! It is a brilliant goal too for the home side as forgotten man Luka Jovic laid it off for tricky winger Aboubakary Koita.
Who saw that coming? Incredible scenes in Athens!
18:45 CET - The teams have walked out, the Champions League music has been belted out, and we are underway in Athens and Istanbul! Not a bad two games to get the evening started...
17:35 CET - The lineups are in for tonight's early matches, with both Real Madrid and Liverpool fielding strong XIs for their trips away to AEK Athens and Fenerbahce, respectively.
Kylian Mbappe and Vinicius Junior both start for Los Blancos, with Bradley Barcola potentially leading the line for Liverpool in Turkey tonight.
There are some familiar faces in the Fenerbahce XI, with N'Golo Kante and Romelu Lukaku both starting.
16:10 CET - Hello, and welcome back to our coverage of matchday four in the Champions League. This evening we have another nine enticing games to enjoy following Tuesday's drama around the continent.
Real Madrid and Liverpool are both in action from 18:45 CET, facing AEK Athens and Fenerbahce away, respectively. Following those clashes, we have seven to enjoy from 21:00 CET, with Arsenal and Man City also facing away trips, Dortmund hosting Betis and Napoli taking on FC Porto.
You can see all the evening's fixtures below, or view them here.
Tuesday, November 3rd
23:15 CET - Another superb night of action in the Champions League, and we hope for more of the same tomorrow.
On the menu tomorrow evening, we have a starter of two with a pair of winners in action. AEK Athens welcome Real Madrid to Greece, whilst Fenerbahce will host Liverpool in a reunion of sorts for caretaker manager Dirk Kuyt.
The main course, though, sees two 'best friends', Martin Demichelis and Enzo Maresca, do battle on the touchline as their teams, RB Leipzig and Manchester City, meet in eastern Germany from 21:00 CET.
Arsenal also travel to central Europe, where they will take on winless Slavia Prague, and Como look to back up their thrashing of Manchester United last time out with a trip to Lens.
We will be back tomorrow to cover all the action.
23:00 CET - All over across Europe, a night full of drama and records. Most of it came at Old Trafford, where Manchester United fought back from 2-0 down at half-time to stun Roma and win 3-2, with Matheus Cunha providing a star turn as he netted twice late on.
Elsewhere, PSG put six past Villarreal in a stunning display from the reigning champions to remain perfect in the competition, whilst Raphinha scored twice to lead Barcelona to a 3-0 win at home to Aston Villa.
LASK made it back-to-back wins in the Champions League with a 4-0 drubbing of Slovan Bratislava, and Bayern beat Atletico Madrid to remain unbeaten, with Lennart Karl and Konrad Laimer scoring for the Bavarians.
It finished goalless between Bodo/Glimt and Lille, whilst Inter were in full control against Feyenoord as they won 3-0 in the Netherlands.
22:45 CET - THERE IT IS! A bolt from the blue has turned it around for Michael Carrick and Manchester United. Two minutes after his leveller, Matheus Cunha rockets one into the corner to set the place alight. He jumps into the crowd in celebration, a release for 90-odd% of people inside the stadium.
22:43 CET - Lift off at Old Trafford! A wayward touch allows Matheus Cunha to steal in and score a simple goal to make it 2-2 between Manchester United and Roma. Will there be a winner with five to play?
22:38 CET - What a moment for David Boly - on off the bench as a 17-year-old for PSG to make his Champions League debut, he has scored just four minutes after coming on. A heartwarming moment for the teenager as he makes it 6-0 against Villarreal.
22:33 CET - Into the closing stages across our seven Champions League games, and it looks like three points will be heading back to Bavaria tonight as Konrad Laimer scores for the second successive game to make it 2-0 to Bayern over Atletico Madrid.
It's just his second-ever goal in the competition.
22:25 CET - Raphinha is at it again for Barcelona, as he makes it 3-0 against Aston Villa, after great work from Joao Cancelo.
It's their 14th goal of the campaign, and we haven't yet finished four games.
22:17 CET - Hope for Manchester United?! Captain Bruno Fernandes steps up to the spot, sees his penalty saved, but is given a reprieve for encroachment in the box and duly dispatches at the second attempt.
Can that spark his side into life against Roma?
22:13 CET - Barcelona look good value for their three points, as they have added a second against Aston Villa through Raphinha.
The deadlock is broken in Madrid, as Bayern take the lead against Atletico. It's Lennart Karl with the opener.
22:05 CET - Back underway across Europe, and it's more issues for Manchester United, as Carlos Baleba has pulled up with what looks like a hamstring injury. He will be replaced by Youri Tielemans.
LASK have started the second half as they ended the first - they are now 4-0 up against Slovan Bratislava thanks to Samuel Adeniran, who has now netted four times in his last six games. PSG have made it five at Villarreal - Fabian Ruiz on the scoresheet again, now just one away from a hat-trick.
21:51 CET - As the players receive their half-time instructions, let's catch you up across the continent.
Boos ring out at Old Trafford as Roma remain 2-0 to the good against Manchester United, and if those United fans were honest, it could easily be four or five. Michael Carrick's side remain dysfunctional, and it will take a huge effort to turn this one around.
Barcelona lead Aston Villa 1-0 at Camp Nou, thanks to an early strike from Lamine Yamal, whilst PSG have broken a scoring record as they dismantled Villarreal in 16 first-half minutes to lead 4-0 at the break. In Austria, LASK on their way to a second-straight Champions League win as they hold a three-goal cushion at home to Slovan Bratislava.
Inter are 2-0 up away to Feyenoord, whilst it is goalless between Atletico and Bayern, as well as in Norway between Bodo/Glimt and Lille.
21:35 CET - After that early barrage of goals, it's gone a little quiet across the continent. LASK do lead Slovan Bratislava in what is both teams' most winnable game of the League Phase - Danish defender Kasper Poul Molgaard Jorgensen has both of their goals in Austria.
Elsewhere, Inter have doubled their advantage over Feyenoord thanks to talented youngster Francesco Pio Esposito.
21:19 CET - When it rains, it pours... A shell-shocked Old Trafford as Matias Soule has the keys to the city once again - this time his shot is blocked by the hand of Ayden Heaven to give away a penalty, which Donyell Malen converts. Roma take an early 2-0 lead, and it's a long way back for Manchester United.
It's his 27th goal since joining the Serie A side in January; only Harry Kane has more in that time.
Meanwhile, PSG make it 4-0 against Villarreal - Fabian Ruiz with their latest effort.
21:14 CET - Roma pounce in midfield, and it's 1-0 to the visitors at Old Trafford. Matias Soule is left all alone, and he tucks away a calm finish to ratchet up the pressure on Manchester United.
Meanwhile, PSG have started like a house on fire against Villarreal. They are 3-0 up inside 13 minutes, thanks to goals from Joao Neves, Desire Doue and Senny Mayulu.
21:09 CET - The first goal of the night comes at Camp Nou, as Lamine Yamal fires Barcelona ahead against Aston Villa. There have also been good starts for PSG and Inter, who also lead.
21:00 CET - Here we go then, time for seven games across Europe which will give us more clues as to who will make the knockouts of the Champions League!
20:40 CET - A pragmatic and clinical Galatasaray have beaten Stuttgart 2-0 in Istanbul to see them pick up back-to-back wins in the Champions League.
A first-half brace from talented Alexey Batrakov saw them to the win - the Russian netted twice in three minutes to secure all three points. He now has four goals in four games, to put him level at the top of the scoring charts.
20:36 CET - Three wins from four in the Champions League for Sporting CP, as they beat Shakhtar 1-0 in London, thanks to that second-half goal from Issa Doumbia.
20:25 CET - Back to Spain, where we check in with the reigning champions PSG, who take on Villarreal tonight.
Senny Mayulu gets his first start in this season's competition as a makeshift striker. Despite not playing in his favoured position, he has netted in his last two games. Meanwhile, it's a huge night for Yellows teenager Carlos Macia, who makes his Champions League debut. He's impressed with the first team so far in his short career; can he rise to the challenge of coming up against arguably the best midfield in the world?
20:15 CET - Spare a thought for Michael Carrick at the moment. He leads his Manchester United side against Roma from 21:00 CET, knowing a defeat could spell the end of his reign at Old Trafford.
The Red Devils are nine without a win in all competitions, and were beaten soundly by Chelsea last weekend. In the Champions League, they were trounced by Como last time out - can they fare better against another Serie A opponent tonight?
They will have to do it without Lisandro Martinez, who has been dropped from the squad.
20:04 CET - Sporting CP have the lead at Stamford Bridge against Shakhtar, thanks to a 59th-minute strike from Italian Issa Doumbia. It's the midfielder's second goal of the Champions League this season, and it's a cool finish as he manages to prod it goalwards whilst tumbling forward.
19:55 CET - Staying in Spain, we head to Camp Nou, where Barcelona take on Aston Villa from 21:00 CET.
Brian Farinas continues at right back for the Catalans after making his first-team debut at the weekend in what is a strong XI from Hansi Flick.
Unai Emery keeps faith with goalkeeper Zion Suzuki in goal for the Villans despite his mistake against Fulham last weekend that cost his side all three points, whilst Emi Buendia, who did not start that game, comes into the side.
19:48 CET - As our two early kick-offs get back underway, let's head around the grounds for some team news in our later games.
First stop, Madrid, where Atletico take on Bayern in a meeting of last year's beaten semi-finalists.
With Ismaela Saibari and Serge Gnabry both ruled out indefinitely following injuries at the weekend, Lennart Karl and Tom Bischof come in for starts. There is some good news for the Bavarians, though, as Michael Olise has recovered from his knock against Borussia Dortmund to start.
Atletico Madrid opt for the rare partnership of Alexander Sorloth and Julian Alvarez up top together.
19:35 CET - We've reached the halfway stage in tonight's two early kick-offs, with Galatasaray holding a convincing 2-0 lead over Stuttgart thanks to a superb brace from Russian star Alexey Batrakov.
Meanwhile, at Stamford Bridge in West London, there's nothing to separate hosts Shakhtar Donetsk and Sporting after a cagey opening period, with the best chance falling to Shakhtar's Kaua Elias.
19:03 CET - There's the second for Galatasaray, and it's that man, Alexey Batrakov, yet again! The 21-year-old powers a low finish through the legs of Fabian Bredlow to double his side's lead inside 15 minutes.
18:59 CET - Galatasaray take an early lead on home soil, with exciting youngster Alexey Batrakov firing into the roof of the net from 12 yards.
18:47 CET - We're now underway in both Istanbul and London. Stay tuned for all the latest scores and updates!
17:49 CET - All eyes will turn to the pitch for Sporting CP this evening as they travel to London to take on Shakhtar, after a few turbulent days off it.
With Rui Borges having departed, the Portuguese side have reportedly agreed a deal to bring in Lyon coach Paulo Fonseca, and it is unknown whether he will be in attendance at Stamford Bridge this evening.
For the Ukrainian outfit, Alisson gets the nod on the right wing just days after his first-ever call-up to the Brazil national squad.
He spoke to ScoresStat about his time with Shakhtar and his aspirations with Carlo Ancelotti.
17:39 CET - To Istanbul for our first team news of the evening, where Galatasaray's two in-form players, Victor Osimhen and Alexey Batrakov, both start for the hosts, whilst Rafael Leao and Ilkay Gundogan have been named on the bench.
For Stuttgart, they are unchanged following their morale-boosting 4-2 win over Bayer Leverkusen in the Bundesliga last time out.
Although our graphic has them with a back three, we expect them to stick with a 4-2-3-1.
17:15 CET - Good evening and welcome to our live coverage of Matchday Four of the UEFA Champions League.
Team news for our two early games - Galatasaray vs Stuttgart and Shakhtar vs Sporting - will be out shortly, so let's catch you up on how the competition is shaping up after three games.
Only PSG, Aston Villa, Liverpool, Real Madrid and Real Betis remain with perfect records, whilst Stuttgart, Bayern Munich and Arsenal join them as the remaining unbeaten sides within the top 16.
Looking at the bottom of the table, Porto are the surprise side to be struggling in this year's Champions League.
They have lost all three games, as have Lille and Slovan Bratislava, both of who are in action this evening against Bodo/Glimt and LASK, respectively.
Harry Kane leads the scoring charts with four goals and two assists, whilst a hat-trick last time out sees Nicolo Tresoldi join him on four
