The Blues have dropped points in their past two League One matches and dropped to sixth in the table.
A 1-1 draw with Oxford United was followed up with a 1-0 loss at Blackpool on Tuesday night.
Kenny Jackett’s side lacked any sort of attacking potency, despite being top scorers in the division with 26 goals.
The likes of Ronan Curtis, Ryan Williams and Andy Cannon struggled to impact the game, while John Marquis squandered a couple of decent chances.
Now Pompey gear up to face a Peterborough side who are also vying for automatic promotion.
Jackett has to weigh up whether he makes changes to his starting XI from that Bloomfield Road defeat or stick with the team that has been successful in previous games.
Here’s how we think Pompey will line-up...
Kenny Jackett’s side lacked any sort of attacking potency, despite being top scorers in the division with 26 goals.