The Blues played out a six-goal thriller at PO4 at the weekend, as they came from three goals down to earn a point against struggling Fleetwood.
Danny Cowley’s side go into the game on a four-game unbeaten run as they take on play-off hopefuls Oxford United.
Cowley rang the changes on Saturday while also reverting to a back four - a system that hadn’t been used in their previous 16 games.
But after a dismal first half, the Blues’ boss may be leaning to reverting to a more familiar formation.
He will have some key decisions to make across the park with in-form man Aiden O’Brien leading the charge to be Pompey’s front man.
Here’s how we predict the Blues will line-up tomorrow evening.
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1. GK: Gavin Bazunu
Despite conceding three goals on Saturday, the keeper will continue to be the Blues number one between the sticks. Photo: The News
2. RCB: Hayden Carter
Was substituted mid-way through the second half against Fleetwood but has been a strong performer since his arrival in January. Photo: The News
3. CB: Sean Raggett
Pompey's main man at the back has been an ever-present figure in defence but should be fit despite an awkward fall into the North Stand on Saturday. Photo: The News
4. LCB: Connor Ogilvie
Connor Ogilvie could be in line to make a return to the defence after three games away from the starting XI with Robertson dropping to the bench. Photo: The News