Coming into the side to face the reigning League Two champions are Alan Sheehan, who returns after serving a one-match suspension last Saturday, and midfielders Pelly-Ruddock Mpanzu and Andrew Shinnie, who netted twice in the midweek Checkatrade Trophy win at AFC Wimbledon.
Glen Rea misses out as he serves a one-game ban following his late red card against Coventry, defender Johnny Mullins is sidelined by the ankle injury suffered in that defeat while Harry Cornick drops to the bench.
TOWN: Stech, Stacey, Cuthbert ©, Sheehan, Potts, Mpanzu, O Lee, Berry, Shinnie, Collins, Hylton. Subs: Justin, Cornick, Gambin, D’Ath, E Lee, Famewo, Shea (GK)
POMPEY: McGee, Clarke, Burgess, O'Keefe, Pitman (c), Hawkins, Kennedy, Lowe, Thompson, Close, Haunstrup. Subs: Rose, Lalkovic, Donohue, Chaplin, Bennett, Evans, Bass
REFEREE: Seb Stockbridge