Celtic suffered a 7-1 defeat against Borussia Dortmund in the Champions League, halting their 17-game winning streak. Despite early hopes and confidence from recent victories, Brendan Rodgers' side struggled without key centre-back Cameron Carter-Vickers and were overwhelmed by Dortmund's attack, with Karim Adeyemi scoring a first-half hat-trick. Defensive errors and slack passing compounded Celtic's woes, leading to multiple goals conceded in both halves. This defeat is one of several heavy losses Celtic has suffered in European competitions under Rodgers, including past thrashings by Barcelona and PSG. Rodgers had aimed to elevate Celtic’s performance at the Champions League level but acknowledged the significant challenge posed by facing last year's finalists.