Pompey climbed up to ninth in the League One standings after seeing off MK Dons on home soil.
The 2-1 victory ensured that Kenny Jackett's side finished a positive week on a high by claiming a third successive triumph.
Ellis Harrison hit the winning goal from the spot after an early Tom Naylor header had been cancelled out by Scott Fraser's penalty.
Fans can watch the key moments from the game (top video) or register with iFollow to see extended highlights (middle video) and a full match replay (bottom video).
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