
17. Pep Guardiola
Guardiola is one of the greatest soccer managers in history. However, the Man City coach has an appalling track record in the Champion’s League with his current team. He won the trophy with Barcelona but failed to replicate this success in the U.K (via ESPN).

That’s because Guardiola always makes the wrong choices and overthinks. He makes illogical team selections because he’s trying to be too clever. In 2022, he substituted his best player, Kevin De Bruyne, and lost control of the tie against Real Madrid. He’s a brilliant coach but these losses are his fault. Maybe he would fare better if he backed his players more.