Wes Fogden paid tribute to the steel which earned Pompey victory on survival day.
Andy Awford’s men grafted their way to their fifth win on the bounce with a 1-0 success at Northampton Town yesterday.
That arrived with their place in League Two secure after Bristol Rovers lost to Rochdale earlier in the day.
Danny East’s sixth-minute goal did the damage to leave the Cobblers’ place in the Football League hanging by a thread.
Northampton launched a second-half fightback.
But Pompey stood firm as they held on to preserve a clean sheet.
Fogden believes his team would not have been able to hold out earlier in the season.
He said: ‘Northampton are scrapping for their lives, so it was never going to be pretty.
‘I think we showed a different side to us.
‘We showed resilience and determination. I don’t think we would have been able to keep them out six weeks ago.
‘The manager has got us together and he’s got a positive feeling around the club.
‘We are working hard for each other.
‘We are taking on board what he wants and things are coming together.’
Awford sprang a surprise as he rang the changes for the Northampton game.
The Blues boss made eight switches after beating Bristol Rovers on Saturday.
That meant Trevor Carson, Nicky Shorey and Jed Wallace were the only players to keep their place.
Fogden feels the win shows the strength in depth.
He said: ‘We’ve got a good squad. The feeling in the club these days is it’s more of squad game.
‘So we are working together and making the most of that.’