Liverpool fear that Steven Gerrard will be forced to miss the crucial festive fixture schedule after suffering a hamstring strain.
Gerrard had tests at the club’s training ground on Sunday, but the early indications were not promising with the possibility of at least a month on the sidelines.
Gerrard was hurt in the 55th minute of Liverpool’s 4-1 win against West Ham United on Saturday.
"Any team without Stevie is going to miss him, clearly," said defender Glen Johnson.
"We have got a good squad and hopefully that (Gerrard's injury) is not as bad as it looks."
The Liverpool captain’s absence is a serious setback, especially with Brendan Rodgers already without Daniel Sturridge for forthcoming fixtures against rivals for the title and Champions League positions.
Rodgers will be forced to pair defensive midfielders Lucas and Joe Allen over the Christmas period, although the Welsh midfielder has, in the past two home games, started to show signs of the form that prompted his £15 million purchase 18 months ago.