On a UEFA Champions League matchday full of surprises, Real Madrid suffered a painful 4-0 defeat to Lille, ending Carlo Ancelotti's remarkable 36-match unbeaten streak. This unexpected loss brought the Spanish giants back down to earth, highlighting some of their weaknesses on the road.

Meanwhile, Atlético Madrid was completely outclassed by Benfica in Lisbon, once again exposing their struggles away from the Wanda Metropolitano. The Portuguese side secured a convincing 4-0 victory, continuing Atlético's unfortunate trend of underperforming in away matches in Europe.

Another shock of the round was Bayern Munich's 1-0 defeat to Aston Villa, a result that came just after the German champions’ dominant 9-2 victory over Dinamo Zagreb in the first matchday.

Barcelona, on the other hand, secured their first win of this year's Champions League campaign, crushing Young Boys with a dominant performance at home.

In one of the marquee matchups of the round, Arsenal managed a solid 2-0 victory over PSG at the Emirates Stadium. Borussia Dortmund also continued to impress, solidifying their position at the top of the group with a stunning 7-1 thrashing of Celtic.

One of the standout stories of this year's competition has been Brest. The surprising French side has now recorded two consecutive victories, placing them second in their group and establishing themselves as the tournament's early dark horse.