Pompey have injury concerns over three of their players ahead of Sheffield United’s visit.
Hayden Mullins hobbled out of the midweek victory over Scunthorpe with a calf problem.
A similar complaint kept Joel Ward out of the match.
The duo are now battling to make tomorrow’s Fratton Park fixture.
Definitely out is Liam Lawrence, who aggravated his calf problem in the week.
The midfielder felt it go while warming up after being on the bench for the Scunthorpe match.
Defender Aaron Moloena said: ‘Nobody is expecting an easy game.
‘Sheffield United will be ready to fight for their lives.
‘It’s important to keep this run of clean sheets going, nick that first goal and take it from there.
‘When you are in a run like this, you want it to last as long as possible and sometimes you find ways to win games that you might have lost.
‘There is healthy competition and that can carry us forward.
‘The boys are happy, we are playing well, we are winning games and the fans are happy – they deserve that.’
The Blades are once again missing the influential Chris Morgan for tomorrow’s match.
The skipper is out for the season with a knee ligament injury, a crippling blow to their hopes of survival.
Striker Darius Henderson has yet to play this season following a hamstring problem, while Nick Montgomery (knee) is another long-term casualty.
Villa loanee Shane Lowry is back after serving a suspension.
However, former Pompey triallist Stephen Jordan is not available having joined Huddersfield on loan.
United boss Micky Adams said: ‘There have been plenty of games, since I’ve been here at least, that we’ve lost when we shouldn’t have done.
‘I’m getting sick of doing press conferences and saying exactly the same things, talking about the same stuff all the time.
‘We need every player and every supporter to give everything.
‘Obviously, the confidence is low, everyone knows that is going to be the case.
‘But we can still do it. There are still a lot of points to play for and it is still possible to avoid relegation.’