Guy Whittingham believes Tom Craddock is due a change of fortune after the striker was struck down by injury again.
The highly-rated 26-year-old signed from Oxford during the summer but has started just one game for Pompey – in the Capital One Cup defeat at Bournemouth.
And he has yet to start a game in League Two this season, with just four substitute appearances to his name.
A groin problem saw him sidelined recently but, after shaking off that concern, he suffered a knee injury in training last week.
That kept him out of Saturday’s 2-2 draw at Cheltenham.
Whittingham revealed it would have been the forward’s full League Two debut if had he not suffered the latest setback.
But, thankfully, the striker avoided a more serious ligament injury after a scan showed only bone bruising.
Now the Blues boss is hoping for change of luck for his summer recruit.
Whittingham said: ‘It’s tough on Tom.
‘He’s got a bit of bone bruising in training.
‘His knee hyper-flexed as he landed awkwardly after jumping up for a routine header.
‘So it will be a couple of weeks out for him, probably, as we need to give it a bit of time.
‘He has not been very lucky with injuries so far.
‘He’s champing at the bit and most likely would have started Saturday’s game so that’s unfortunate for him.
‘But we’ll get his treatment right and he should be back in a short while.
‘I’m sure he will be looking to make up for lost time when we get him back again.
‘He’s had a frustrating start to his Pompey career.’