Brendan Rodgers described Celtic's heavy defeat to Borussia Dortmund as "a tough watch," acknowledging that his team was not performing at their best during the match. Dortmund showcased their quality with a commanding 7-1 victory in the Champions League, and Rodgers noted that every mistake made by Celtic was capitalized on by their opponents. He remarked, "I don't think I've been involved in a game where I felt that every single mistake that we made got punished. And that's the level."