Coach Raffaele Palladino admitted his side had been outclassed by "the best team in the world" after Atalanta's heavy UEFA Champions League exit to FC Bayern Munich on Wednesday.
Bayern Munich waltzed into the quarter-finals of the Champions League with a 10-2 aggregate win over Atalanta.
Liverpool swept aside Galatasaray at Anfield, scoring four unanswered goals to book a Champions League quarter-final meeting with holders Paris St-Germain.
Tottenham Hotspur delivered a much-improved performance to defeat Atletico Madrid 3-2 in their Champions League second-leg tie, even though it was not enough to reach the quarterfinals.
Eddie Howe did not hold back after Newcastle United's humiliating 7-2 defeat to FC Barcelona, describing key moments in the game as "unforgivable" as his side crashed out of the UEFA Champions League.
Hansi Flick has admitted it was a "crazy game" after FC Barcelona produced a stunning 7-2 win over Newcastle United to reach the Champions League quarter-finals with an 8-3 aggregate victory.