It’s another stern test of the Blues’ credentials, as the Baggies arrive at PO4 after a strong start to the campaign.
So there’s no let-up for John Mousinho’s men, but how does the boss approach the game as players return from a lengthy injury list?
Here’s how we think Pompey will line up as they hunt their maiden league win.

17. Sub 5: Freddie Potts
A feeling we could see plenty of Potts in the coming weeks, but West Ham loanee having to bide his time at the moment. | Jason Brown/ProSportsImages

18. Sub 6: Sammy Silvera
Started last time out against Sunderland but was also a starter for Australia in Indonesia this week, so may be given a rest after those exertions. Photo: Jason Brown

19. Sub 7: Josh Murphy
After his momentum in pre-season was curtailed by injury, all Pompey fans will want Murphy quickly back to top speed following his return. | Jason Brown/ProSportsImages

20. Sub 8: Mark O'Mahony
Brighton loanee has a part to play against Baggies - but will likely be off the bench. | Portsmouth FC