Borussia Dortmund delivered a stunning 7-1 defeat to Celtic in the UEFA Champions League, showcasing their dominance with a first-half hat-trick from Karim Adeyemi. Emre Can opened the scoring with a penalty in the seventh minute, but Celtic briefly equalized through Daizen Maeda. Dortmund quickly regained control, with Adeyemi's clinical finishing contributing to a 5-1 lead by halftime. The second half saw Serhou Guirassy and Felix Nmecha add to the tally, leaving Celtic to face the harsh reality of their performance on the European stage. This defeat marks one of Celtic's heaviest losses in recent memory, echoing past humiliations in the competition. Brendan Rodgers' side now faces an uphill battle in their upcoming matches, struggling to compete at this elite level.