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...
17. Sub 6 - Michael Jacobs
Vying for his full debut against his former club. A lot will depend on his fitness. Photo: Daniel Chesterton
18. Sub 7 - Ellis Harrison
Looked good when joining John Marquis up front at Rochdale. Could happen again if Pompey need a goal. Photo: Joe Pepler
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