The German fumbled Christian Pulisic’s shot in stoppage time which led to Jacob Bruun scoring Dortmund’s third goal of the game.
Karius’ performances have come under scrutiny ever since the Champions League final against Real Madrid where he made two major errors that led to the Reds’ 3-1 loss.
He lashed out to his ‘haters’ in an Instagram story, saying: “To those who take joy in seeing other people fail or suffer, I feel for you.
“Whatever it is that is happening in your life to hold this much anger and hate, I pray that it passes and good things come to you.”
Liverpool goalkeeper Loris Karius not happy with criticism.
— Sacha Pisani (@Sachk0) July 23, 2018
And while Jurgen Klopp might have to the 25-year old’s rescue quite a few times now, it was former Los Blancos and Spain’s World Cup winning goalkeeper Iker Casillas who leapt to Karius’ defence after the pre-season game.
“This attack on Loris Karius, will it ever end? I’m talking about him like so many other goalkeepers,” Casillas wrote on Twitter.
“There are many more serious problems in the world… f***!
“Leave the kid alone. He is also a person. As we all are!”
Este ataque a @LorisKarius va a terminar alguna vez? Hablo de él como tantos otros guardametas. Hay muchos más problemas serios en el mundo joder! Dejar al chaval en paz! También es persona. Como lo somos todos!
— Iker Casillas (@IkerCasillas) July 22, 2018
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