Andoni Iraola's side took a first-half lead in Austria, through Ronald Araujo's first goal for the club, when he headed in from Kostas Tsimikas' corner. Two minutes later, Barcola scored his first Liverpool goal since joining from PSG for £123m in the summer. Lewis Koumas teed up Barcola after Rio Ngumoha made a brilliant run down the right and the Frenchman finished wonderfully with his right-foot. Barcola - who failed to score or assist in any of his first six games - scored another just before half-time after he was played through by Florian Wirtz, before Jeremie Frimpong made it four with a header from a Tsimikas cross after the break. LASK pulled one back through Robert Ljubicic but three minutes later, Barcola completed his hat-trick when he got on the end of Frimpong's ball, much to the delight of Liverpool's travelling support. Lewis Koumas then got in on the act as Frimpong got another assist but the home side restored some pride through two goals in quick succession from Florian Flecker to make it 6-3 on the night. Iraola - who made four changes from Sunday's defeat at Manchester City, including resting Virgil van Dijk - has now seen his side win two out of two in the Champions League. Liverpool travel to Brentford in the Premier League on Saturday before taking on Villarreal at Anfield next Tuesday.

It took until the half-hour mark for the first of the seven strikes when referee Rohit Saggi awarded a penalty for Club Brugge - which Tresoldi hammered into the top right corner for his first of the evening. On the brink of half-time, captain Lautaro Martinez made it 1-1 with his first Champions League goal since November 2025. But a poor mistake from Inter goalkeeper Josep Martinez, who rushed out of his goal to miss the ball, allowed Tresoldi to slot into an open goal for his second of the night. Eleven minutes later came the hat-trick goal for Tresoldi, who latched on to Martinez's save before powering into the bottom corner for 3-1. With less than 10 minutes to play, Martinez gave Inter hope of snatching a point with his second of the evening after he pounced on the loose ball in the box. That hope seemed to be snatched away when Romeo Vermant reinstated the Belgian's two-goal lead three minutes from time. But even in the 93rd minute, the goals were still flowing as substitute Ange-Yoan Bonny cut in from the left side before whipping a great finish into the far corner for 4-3.

Viking, who were in Norway's second tier as recently as 2018, scored two first-half goals to take control before England captain Harry Kane equalised with a penalty and back-post header. Luis Diaz gave Bayern the lead with a tap-in but Michael Olise was sent off shortly after for two yellow cards in the same phase of play, including throwing the ball in a Viking player's face. That gave Viking, who are playing in Europe's top competition for the first time since 1992-93, renewed energy. They were the better team after the red card and got a deserved equaliser when substitute Herman Haugen headed home at the back post. Viking, who have two head coaches in Morten Jensen and Bjarte Lunde Aarsheim, are joint top of the Norweigan top flight with Bodo/Glimt, with eight games remaining. They took the lead after 71 seconds when Gianni Stensness rose highest to head home a corner, before Peter Christiansen superbly slot past Jonas Urbig on the break in the 38th minute. Kane's brace, which pulled Bayern level, means he has 36 goals in 40 Champions League games since turning 30, taking him one clear of Messi's record of 35 strikes in his thirties. The 33-year-old has scored in nine successive Champions League games - a feat only achieved by Ruud van Nistelrooy, Robert Lewandowski and Cristiano Ronaldo, who holds the record with 11 games. Bayern host Arsenal on 21 October and will be without Olise after his sending-off, while Viking visit Aston Villa on the same night.

Barcelona sought to extinguish the febrile atmosphere early on by controlling possession, but fell behind after Galatasaray's first proper attack. Seconds after Gordon's claims for a penalty were ignored, Rafael Leao charged down the left wing and cut the ball back into the path of Aleksey Batrakov, who found the bottom corner via a deflection off Joao Cancelo. Galatasaray thought they had doubled their lead six minutes later when Baris Alper Yilmaz diverted Victor Osimhen's header past Joan Garcia, but the goal was disallowed for a marginal offside after a video assistant referee (VAR) check. Barcelona steadied themselves and silenced the frenzied home support two minutes before the break, as Dani Olmo deflected the ball into the path of Joao Cancelo who curled a strike into the corner past Turkish goalkeeper Ugurcan Cakir. Any vulnerability the visitors showed in the first half quickly evaporated in the second as Hansi Flick's side scored twice in quick succession. Fermin Lopez headed in from a Lamine Yamal cross in the 50th minute, and three minutes later a supreme piece of close control from the latter set up Gordon to fire in his first Champions League goal for Barcelona three days after netting for the club for the first time. Fellow summer signing Karim Adeyemi replaced Gordon and arrowed in Barcelona's fourth goal from the left side of the penalty area after Gabriel Jesus touched a Lamine Yamal cross into his path. Barcelona have scored 84 goals in 28 Champions League matches under Flick, giving them the highest goals-per-game ratio (3) in the competition for any club with 20 or more games under a specific manager since 1992-93.

Defender Jurrien Timber sent them on their way in the 64th minute after he collected a pass from Noni Madueke and lifted a clever finish over Berke Ozer. England forward Eberechi Eze added the second three minutes later when he finished first time from substitute Bukayo Saka's cross. Having won at Napoli, Arsenal sealed a second victory in the competition when Saka himself rolled in the third in the 71st minute. Boss Mikel Arteta had made five changes to the side that beat Leeds 2-1 in the Premier League at the weekend, but the frontline of Eze, Madueke and Viktor Gyokeres did not click in a laboured first half from the Gunners. He resisted the temptation to make wholesale changes at the break and was rewarded when Dutch defender Timber found the breakthrough with a neat finish. Saka, Kai Havertz and captain Martin Odegaard were then introduced and all three substitutes played a major role in the next two goals as last season's beaten finalists wrapped up a convincing success. Arsenal won all eight of their league phase games in the previous campaign before they lost the final to Paris St-Germain - and look like they will be hard to beat at this stage of the competition again.