And the Blues do so with their squad defined for the months ahead at the close of the transfer window.
There are players coming back from injury and ineligibility against the Black Cats, before the pause for the international break.
Here’s how we think Pompey will line up at a sellout Fratton Park.
17. Sub 5: Harvey Blair
Could well start - if not will probably get the chance to impact the game off the bench. Photo: Portsmouth FC
18. Sub 6: Matt Ritchie
Is ready to start after undergoing what has almost been a mini pre-season since Fratton homecoming, but a close call whether he actually will. If not will likely get his chance to make mark against rivals of former side Newcastle. | National World
19. Sub 7 Mark O'Mahony
Could the new boy come straight in? Maybe the bench is the best place for Brighton loanee after a busy period and start against Crawley this week in Carabao Cup. | Getty Images
20. Sub 8: Elias Sorensen
Has probably gained more playing time than many expected since arrival from Denmark, as he adjusts to new home. Photo: Jason Brown