Goals from Colby Bishop – one of which was a penalty – either side of half-time secured the Blues their first win of the new League One season.
It maintains Danny Cowley’s side’s unbeaten start to the season and moves Pompey up to ninth.
Here’s how The News rated the performance as temperatures rose to 33 degrees in Gloucestershire.
6. Reeco Hackett - 7
(Replaced by Owen Dale on 67 minutes): Looked lively and was always an outlet. Photo: NationalWord
7. Marlon Pack - 7
Quietly went about his business but with maximum impact. Photo: NationalWorld
8. Louis Thompson - 7
(Replaced by Tom Lowery on 70 minutes): Another busy display from the midfield anchor. Photo: NationalWorld
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