Paris Saint-Germain commenced their Champions League campaign with a dominant 6-1 victory over Slovan Bratislava, featuring a hat-trick from Ferran Torres at the Parc des Princes. Ousmane Dembélé and Fabian Ruiz also contributed goals for Luis Enrique's side, who are aiming for a third consecutive European title despite a slow start in Ligue 1. Meanwhile, Liverpool secured a 2-1 comeback win against Atletico Madrid at Anfield. Atletico initially led through Marcos Llorente, assisted by Julian Alvarez. However, Liverpool responded with goals from Dominik Szoboszlai, set up by Ronald Araujo, and Alexis Mac Allister's second-half strike. New Liverpool manager Andoni Iraola expressed his delight with the atmosphere. Elsewhere, Barcelona scored five against Feyenoord, and Arsenal defeated Napoli 1-0. Real Madrid also edged Inter Milan in their opener, with Kylian Mbappe scoring.