Pompey are sweating on the fitness of Liam Lawrence ahead of tomorrow’s clash with Crystal Palace.
The Blues’ star man will today undergo a scan on his calf after limping off in Saturday’s win over Barnsley.
The injury is a recurrence of the problem picked up against Derby a fortnight ago.
That kept the 29-year-old out of international duty with the Republic of Ireland.
Pompey are hoping the problem has not worsened in the success over the Tykes.
A period on the sidelines for Lawrence would be a huge blow for Steve Cotterill.
Lawrence has quickly established himself as a key man for Pompey since his arrival from Stoke.
And he has been handed the captain’s armband in the absence of Aaron Mokoena.
Pompey first-team coach Ian Woan explained Lawrence was quickly withdrawn on Saturday before the problem worsened.
He said: ‘Liam will have a scan today. We let it settle down yesterday.
‘He’s going to be a big loss if it is anything worse than what it was two weeks ago.
‘We aren’t going to know the full extent until he gets the scan.
‘It’s a recurrence of his calf problem. It’s tightened up on him again.
‘It was more precautionary than anything.
‘We have a lot of games coming up so we whipped him off as soon as he said it was a bit painful.’
Woan also reserved praise for debut-making David Cotterill following his emergency loan arrival from Swansea.
He believes the winger can help Dave Kitson and David Nugent to thrive.
Woan said: ‘David did well for us. He put four or five good crosses in for Kits and Nuge.
‘Our forwards have been crying out for that.’