Pompey’s head coach has overseen 16 league matches, winning nine of them, to haul his team within three points of fifth spot in League One.
But how does his points tally since arriving at the Blues compare to all 72 Football League clubs?
We look at the top 15 clubs who are the highest points earners across the Championship, League One and League Two since January 20 – and it’s no surprise that Pompey feature.
13. 3) Luton - 28 points
Luton collected 28 points over the period, playing 13 games, winning eight, and having a goal difference of nine. Picture: Paul Harding/Getty Images Photo: Paul Harding
14. 2) Pompey - 30 points
Pompey have collected 30 points since John Mousinho's appointment, playing 16 games, winning nine, with a goal difference of 11. Picture: Jason Brown/ProSportsImages Photo: Jason Brown
15. 1) Barnsley - 35 points
Barnsley collected 35 points over the period, playing 14 matches, winning 11, with a goal difference of 25. Picture: George Wood/Getty Images Photo: George Wood