LIVERPOOL, England (REUTERS) - Liverpool's Brazil goalkeeper Alisson Becker suffered a calf injury and was substituted during the first half of the Premier League season opener against promoted Norwich City on Friday (Aug 9).
Becker went down in the 36th minute of the comfortable 4-1 win at Anfield, slipping as he was playing the ball out and immediately calling for medical attention.
A stretcher was brought out for the keeper but he was able to leave the field with the help of support staff.
Liverpool manager Juergen Klopp said it was too early to know the seriousness of the injury but Becker has no chance of playing in Wednesday's Uefa Super Cup match against Chelsea in Istanbul.
"It's a calf injury. He felt as if something hit him from the back. He won't be ready for Wednesday, I can say that already," said Klopp.
"It is not good but we will find a solution and move on," added the German.
Spanish goalkeeper Adrian, who signed for Liverpool on a free transfer on Monday, replaced Becker to make his debut.
"Adrian is a good goalie," said Klopp.
"In possession he is calm and he is good at shot-stopping, that's why we signed him. It's good for him but we have a little problem with Ali."