Arsenal produced a dominant display to beat Bayern Munich 4-0 at the Emirates Stadium, ending the German side's unbeaten run and establishing themselves as group-stage leaders with a perfect record. Jurriën Timber opened the scoring from a set piece, before 17-year-old Lennart Karl added a fine goal. Declan Rice and Eberechi Eze controlled midfield, with Noni Madueke and Gabriel Martinelli also on target, the latter embarrassing Manuel Neuer with a sweeping finish. Manager Mikel Arteta described Bayern as 'the best team in Europe' before the match, but now his own side hold that status.
Liverpool's troubles deepened with a heavy defeat at Anfield against PSV Eindhoven, their ninth loss in 12 matches. The Dutch side, dominant in the Eredivisie, executed their tactical plan perfectly, cutting Liverpool apart on the counterattack. Ivan Perisic scored an early penalty, Guus Til added a second, and substitute Couhaib Driouech netted twice to complete a 4-0 rout. PSV coach Peter Bosz quipped that he and Liverpool boss Arne Slot would share 'something strong' after the game.
Elsewhere, Benfica secured a 2-0 victory at Ajax, who remain bottom of the group. Samuel Dahl scored from a corner, and the result ended Benfica's run of six successive Champions League defeats. Manager José Mourinho celebrated by kissing former player Wesley Sneijder, now a pundit, on the forehead. In a thrilling encounter between Chelsea and Barcelona, Brazilian teenager Estevão stole the show with a brilliant solo goal, outshining Lamine Yamal. His strike was the highlight of a week that also saw Kylian Mbappé score four for Real Madrid and Vitinha net a hat-trick for PSG in a 5-3 win over Tottenham.
Napoli beat Qarabag 2-0 on the fifth anniversary of Diego Maradona's death, with Scott McTominay opening the scoring. Manager Antonio Conte praised the atmosphere and the team's effort to honour Maradona's memory.
