It's a tough assignment for John Mousinho's side against opposition with one of the best home records in the division.
The Blues are on a nine-game unbeaten run, however, as they aim to move a step closer to the Championship.
Here's how we think Pompey will line up, as they embark on the run-in with 10 games remaining.
![Sixteen clean sheets and counting for a standout Pompey performer this season.](https://www.thestar.co.uk/webimg/b25lY21zOjcyNjIxN2ZiLWI3NDgtNGQwMS04OTEzLWNiY2Y5ZGFmZmVhNTo3NzM1M2ZjMi0zZGI4LTRlYTQtOWRiMS1hYjFmMWJmMzVkNGI=.jpg?crop=3:2&width=800)
2. GK Will Norris
Sixteen clean sheets and counting for a standout Pompey performer this season. Photo: Jason Brown
3. RB Joe Rafferty
Man-of-the-match performance from Joe Rafferty last weekend, with Zak Swanson back to step up competition.
![Battled back from penalty setback last weekend to put in another powerful performance.](https://www.thestar.co.uk/webimg/b25lY21zOmVjYTAwZmM1LWYyNGMtNGQ3YS04ZWJiLTdmOWY3MWY4OWJmYzo5MGYyZjkzNy0xMjhhLTQzNmUtODNjYS0yYjA3Yjk5MjY0MmM=.jpg?crop=3:2&width=800)
4. CB Sean Raggett
Battled back from penalty setback last weekend to put in another powerful performance. Photo: Jason Brown