Georginio Wijnaldum rued Liverpool's slow start that contributed to a 3-1 defeat by Real Madrid in the first leg of their Champions League quarter-final on Tuesday.
Zinedine Zidane's side will take a two-goal advantage into next week's return fixture at Anfield following finishes by Vinicius Junior (two) and Marco Asensio in the Spanish capital.
Mohamed Salah netted an away goal for the Reds shortly after half-time to make it 2-1, though it was quickly followed by Vinicius' second of the encounter.
Asked if he felt the opening 45 minutes was where the game slipped away from the visitors, Wijnaldum told Liverpoolfc.