Roy Hodgson has confirmed that Martin Kelly has joined Crystal Palace's growing injury list after suffering a hamstring injury.
The Eagles chief had to substitute the defender, who was making his 100th appearance for the club, just before half-time in Sunday's 1-1 Premier League draw against Newcastle at Selhurst Park.
Hodgson is already with a number of key first-team players, while Scott Dann, Jason Puncheon and Bakary Sako won't play again this season.
Therefore an injury to Kelly is the last thing the former England manager needed in his side's battle for top-flight survival.
'It's very annoying because we've worked hard to avoid muscle injuries,' Hodgson said. 'That came about because of a foul – he felt a twinge in his hamstring because of the foul.
'He was moving away from a player who was pulling him back and the movement he had to make to get forward to the ball made him tweak his hamstring.
'We won't know until Monday how damaging that hamstring pull is. They can be very damaging as we all know, or we might be lucky because he came off straight away and as it wasn't a violent movement - it might be that he is not going to be out for as long as he might have been.'
Goalkeeper Julian Speroni was also absent on Sunday with Hodgson confirming that he suffered a twisted knee in training on Saturday.
He added: 'He - and we - didn't think it was going to be that problematic straight after training, but overnight it's swollen and it's feeling stiff so tomorrow he will have a scan to see how bad that damage is.'