Unsurprisingly, the Blues’ head coach sticks with the same starting XI which secured an impressive 2-0 victory over Crewe at the weekend.
That result represented a 100 per cent winning start to the League One season for Pompey, having now won their opening two league fixtures to move into second spot.
It means Reeco Hackett-Fairchild keeps his place after making his full league debut for the Blues in that triumph over the Railwaymen.
Elsewhere, Joe Morrell is again on the bench along with fellow new faces Connor Ogilvie and George Hirst following their recent arrivals.
Pompey, who have yet to concede in League One this term, come up against a Shrewsbury side managed by ex-Fratton boss Steve Cotterill.
Pompey: Bazunu, Freeman, Raggett, Robertson, Brown, Williams, Tunnicliffe, Curtis, Harness, Hackett-Fairchild, Marquis.
Subs: Bass, Ogilvie, Morrell, Jacobs, Ahadme, Harrison, Hirst.