Liverpool boss Arne Slot fears he will be without goalkeeper Alisson "for a few weeks" following his injury against Crystal Palace.
The Brazil international, 32, went off in the 79th minute after appearing to pull his hamstring when making a clearance.
With Caoimhin Kelleher absent from the squad because of illness, Vitezslav Jaros came on for his Liverpool debut and made one save to keep out a tame effort from Eberechi Eze as the Reds won 1-0.
"With Alisson it is clear he will be out for maybe a few weeks," Slot told BBC Match of the Day.