Joe Hancott is handed a Pompey debut against Fulham U21s in tonight's Checkatrade Trophy match.
The 16-year-old academy defender comes in at left-back for the group stage fixture at Fratton Park.
Jamal Lowe also starts, as his suspension does not cover games in this competition.
Gareth Evans, Jack Whatmough, Adam May and Kal Naismith are the only players to keep their place from Saturday's league loss at Oxford.
Pompey: Bass; Evans (c), Davies, Whatmough, Hancott; Baker, May, Close; Lowe, Main, Naismith
Subs: McGee, Talbot, Burgess, Haunstrup, Bennett, Chaplin, Kabamba