Nathan Thompson has earned an instant recall to Pompey's side for the clash with Oxford United.
The versatile performer has missed the Blues' last four matches following a sending off at Southend, his second of the season.
However, he is eligible to feature against the U's in today's televised clash - and Kenny Jackett has put him straight into his side.
Thompson comes into a midfield slot, with Dion Donohue dropping back into his left-back role.
That means Brandon Haunstrup moves to the bench for the only change to the team which won at Oldham last weekend.
Elsewhere, fit-again Gareth Evans takes his place among the substitutes following four matches sidelined with a hamstring problem.
Meanwhile, Jackett is not present for the game following a family health issue.
Instead assistant boss Joe Gallen instead leads the team this afternoon.
Pompey: McGee, Walkes, Whatmough, Clarke, Donohue, Thompson, Lowe, Close, Ronan, Naismith, Pitman.
Subs: Bass, Burgess, Kennedy, Chaplin, Evans, May, Haunstrup.