Jack Whatmough makes his first league appearance of the season at Peterborough this afternoon.
He replaces the suspended Christian Burgess at the back in one of three changes from the side that beat Rochdale just over a week ago.
Steve Seddon comes in for Lee Brown at left-back, while Andy Cannon makes way for Ben Close in midfield.
Pompey: Bass; Bolton, Whatmough, Raggett, Seddon; Naylor (c), Close; Williams, McGeehan, Curtis; Marquis
Subs: MacGillivray, McCrorie, Brown, Cannon, Harness, Pitman, Hawkins