The Blues have been held to frustrating goalless draws with Shrewsbury and Rochdale in their opening games of the campaign.
Kenny Jackett now has to ponder his starting line-up to deliver three points against the Latics.
Here's how we think the Blues could line-up...
5. Left-back - Lee Brown
Been preferred in the opening two league matches and there seems no reason why that might change. Photo: Joe Pepler
6. Holding midfield - Tom Naylor
One of the first names on the team sheet. Photo: Joe Pepler
7. Holding midfield - Ben Close
Bryn Morris has failed to sparkle after starting the season in the engine room and sections of fans believing it’s time to give Close a chance. The Southsea lad offers a goal threat, which Pompey desperately need. Photo: Joe Pepler
8. Right-wing - Marcus Harness
The former Burton man will be looking to hit the heights he did against Colchester in the EFL Trophy earlier this campaign when he fired a fine double. Photo: Joe Pepler