Pride as well as points was on the line last Sunday but arguably more is at stake against the Baggies, who find themselves being dragged into the relegation mire.
Victory for Pompey will see them leapfrog Eric Ramsay’s side in the table, as they look to continue their upwardly mobile league form.
John Mousinho’s men, of course, have a injury crisis to contend with, with 10 men out going into the game and players likely to feature carrying problems.
There’s also the four new faces signed so far in the January window to throw in the mix - here’s how we think Mousinho will go on another big afternoon at PO4.

5. CB Ibane Bowat
Bowat has his own back problem he's managing, but seems best placed to complete a decent block of minutes after more than an hour played on Sunday. Photo: Graham Hunt

6. LB Connor Ogilvie
Was a slight surprise to see Ogilvie start at left-back over Swanson, but Mousinho seems keen to get his dependable option back in his strongest position. Photo: Graham Hunt

7. CM Andre Dozzell
A really measured Dozzell-esque performance last weekend after lacklustre effort against Watford. Partnership with Adams showed signs of promise in south-coast derby. Photo: Graham Hunt
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8. CM Ebou Adams
The new favourite emerged in earnest at Watford and then sent his Fratton career into orbit in the south-coast derby. The bar has been set for midfield destroyer. | Graham Hunt/ProSportsImages
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