Pompey are tantalisingly close to Championship safety after registering a third successive victory.
Ibane Bowat, on as a substitute for the injured Terry Devlin, grabbed a 63rd-minute winner from Adrian Segecic’s corner to put Leicester City on course for League One.
For John Mousinho’s men, however, are now seven points clear of the drop zone with three matches remaining as this remarkable late-season surge continues.
And here are our Pompey player ratings…
5. Conor Shaughnessy - 8
Given one more game, he can have his break against Coventry. Supreme at the back, winning aerial duals in both boxes and yet another all-round classy display. | Simon Roe/ProSportsImages
6. Regan Poole - 8
Celebrates a block like a goal, particularly one against Vestergaard late in the game. There was only dodgy back pass, when he was rescued by Schmid, but another immense showing. | Graham Hunt/ProSportsImages
7. Marlon Pack - 8
Give this man a contract. Another dominant midfield display, making Pompey tick. Remarkable fitness and competitiveness, never stops, never slows. | Simon Roe/ProSportsImages
8. Andre Dozzell - 8
Helped dictate play with the minimum of fuss. Not always a headline act but, since his return from injury, has made a huge difference to the Blues’ relegation battle. | Simon Roe/ProSportsImages