Alan McLoughlin toasted a maiden victory in the newly-formed reserve league as Pompey edged past Peterborough.
But the first-team coach admitted his side should have been well out of sight before a dangerous late Posh fightback.
The Blues won 3-2 at the Nene Park Academy yesterday afternoon through goals from Miles Storey, Andy Barcham and Ben Close.
Yet they had been deservedly 3-0 up with 20 minutes to go, before Jack Friend and Grant McCann provided an uncomfortable finish.
Pompey held on for victory, but McLoughlin believed it shouldn’t have been a close-run finale.
He said: ‘To be fair to Peterborough, the first 10 minutes they’ve started well and moved the ball around.
‘But we’ve sat in and eventually got a grip of the game and it should have been really 10 or 11-4.
‘We have missed a hell of a lot of chances, we have tried to walk the ball into the net sometimes, we’ve not got shots off when we should have, we have not crossed it when we should have.
‘So little tiny things but, overall, we got to 3-0 cruising.
‘At that point we are commanding the game and then just really stopped playing the ball around and maybe mentally settled for a 3-0 victory.
‘I was a bit disappointed for the last five minutes – we were hanging on a little bit, which I understand because we hadn’t killed them off, but we saw the game out in the end.
‘There were lots of positives in the game.
‘These are competitive games, it’s not a friendly, and we wanted to win.’
n See pages 46-47
for match report