Ertl, Dunne and Butler all start
Johnny Ertl makes his first start in more than three months at Mansfield this afternoon.
The defender replaces the injured Nyron Nosworthy in one of three changes from the side beaten by Bury last week.
James Dunne returns from a knee problem in midfield, while Dan Butler comes in at left-back.
Nigel Atangana and Nicky Shorey both drop to the bench, where they are joined by teenagers Conor Chaplin and Adam May.
Pompey: Jones; Devera, Ertl (c), Webster, Butler; Dunne, Close, Wallace, Hollands; Westcarr, Tubbs
Subs: Poke, May, Shorey, Atangana, Fogden, Chaplin, McCallum