Brett Pitman is absent from tonight's trip to Peterborough.
The Blues' 12-goal leading scorer has been sidelined by a hamstring problem and misses out of the London Road clash.
His place leading the line is taken by Curtis Main, one of two changes to the side which defeated Southend on Saturday.
The other is Kyle Bennett making way for Matty Kennedy, who laid on the winner for Pitman in that 1-0 success.
Kennedy moves to the left of the attacking three, with Kal Naismith operating in the role behind the main striker.
Elsewhere, Adam May comes onto a bench which also contains Bennett.
Pompey: McGee, Evans, Burgess, Hawkins, Clarke, Rose, Close, Lowe, Naismith, Kennedy, Main.
Subs: Bass, O'Keefe, Donohue, Chaplin, Thompson, Bennett, May.