The Blues finally picked up a maiden third-tier victory of the camapaign last weekend – an impressive 4-2 success at Burton Albion.
Kenny Jackett then made wholesale changes for a comfortable 3-0 triumph over Southend in the EFL Trophy on Tuesday.
What’s more, the Pompey boss switched formations from his favoured 4-2-3-1 in both games.
At Burton, assistant-manager Joe Gallen revealed the Blues played a 4-4-2 system, with Marcus Harness partnering Ellis Harrison up front.
And at Southend, Jackett rolled out a 3-4-3 formation - and hasn’t ruled out using it again.
We've taken a look at how we think Pompey will start against MK Dons and who will be on the bench...
What’s more, the Pompey boss switched formations from his favoured 4-2-3-1 in both games.