Paris Saint-Germain, led by Ferran Torres' hat-trick, began their UEFA Champions League campaign with a dominant 6-1 victory over Slovan Bratislava. Barcelona also secured a strong 5-1 win against Feyenoord, with Raphinha scoring twice. Arsenal edged Napoli 1-0, thanks to a late goal from captain Martin Odegaard. Liverpool mounted a comeback at Anfield, defeating Atletico Madrid 2-1 in coach Andoni Iraola's Champions League debut, after goals from Dominik Szoboszlai and Alexis Mac Allister. Meanwhile, Galatasaray suffered a disappointing 3-1 loss to Sporting CP in Lisbon, despite taking an early lead through an own goal, with Geny Catamo, Luis Suarez, and Rodrigo Zalazar scoring for the Portuguese side.