Champions League Matchday 2: Atletico Beat Ten-Man United, Bayern Held by Viking FK, Barcelona Win in Istanbul

Matchday 2 of the 2026-27 UEFA Champions League league phase delivered a series of eye-catching results across nine Tuesday fixtures. Atletico Madrid defeated Manchester United 2-0 at home in Madrid, with Pablo Barrios opening the scoring early and Ademola Lookman adding a second. United's night was made worse by a red card that left them with 10 men before the final whistle. In another headline result, Norwegian side Viking FK held a strong Bayern Munich to a 3-3 draw — a shock outcome for the German contenders. Unbeaten Barcelona traveled to Istanbul and came away comfortable 4-1 winners against Galatasaray. Arsenal, defending Premier League champions, hosted Lille and triumphed 3-0, while defending Serie A champions Internazionale suffered a stunning 4-3 loss to Club Brugge, with Nicolò Tresoldi netting a hat-trick for the Belgian side. Earlier in the evening, Sporting CP beat Lens 2-0 and Sabah FK defeated Slavia Prague 2-0. RB Leipzig edged PSV Eindhoven 1-0, and Villarreal got the better of Napoli 3-1.