And the big challenge for the Blues will be filling the huge void left by Alex Robertson’s season-ending hamstring injury.
Last week it was Gavin Whyte who got the nod to play in the 10 role in the 4-2-3-1 formation favoured by John Mousinsho this term.
Here’s how we think he will go as Leyton Orient arrive at PO4.
1. Pompey predicted line-up
Here's how we think Pompey will line up at Fratton Park against Orient. Photo: Jason Brown
2. GK: Will Norris
A new challenge awaits in Matt Macey, but Norris firmly remains first choice. Photo: Jason Brown
3. RB: Joe Rafferty
A bit in and out at Cheltenham as Pompey didn't make enough of attacking possession and positions, but right-back slot remains his. Photo: Jason Brown
4. CB Sean Raggett
May be some competition on the horizon, but they face a tough task displacing Raggett as he continues to deliver for his side. Photo: Jason Brown