Bayer Leverkusen's march through the Europa League continued as they secured a spot in the semi-finals with a 3-1 aggregate win over West Ham United.
Liverpool's Jurgen Klopp accepted their lack of goal threat failed to put enough pressure on Atalanta to help turn their Europa League quarter-final back in their favour.
Liverpool could not conjure up another comeback when they needed it most as their 1-0 victory over Atalanta in Bergamo failed to salvage their Europa League hopes.
Jurgen Klopp has promised his Liverpool players will show a reaction to their shock 3-0 Europa League home defeat to Atalanta when they host Crystal Palace in the Premier League on Sunday.
West Ham were breached by two late goals as they slipped to a 2-0 defeat in the first leg of their Europa League quarter-final at Bayer Leverkusen.
Jurgen Klopp called Thursday's 3-0 home defeat to Atalanta a "low point" in Liverpool's season as their Europa League hopes were left hanging by a thread.