Pompey are on a run of four successive wins in League One, while also extending their league unbeaten run to seven games with a win over Gillingham on Saturday.
However, there was a shock as some of the Blues’ promotion-chasing rivals slumped down the form table.
We take a look at which teams are in and out of form, based on the last six League One games.
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1. Fleetwood Town - 2 points
The Cod Army are in the worst form having just picked up two points from the last six games and have recently sacked Simon Grayson. (Photo by Richard Heathcote/Getty Images) Photo: Richard Heathcote
2. Doncaster Rover - 2 points
Rovers have failed to win any of their last six games having picked up three points and sit in the League One dropzone. (Photo by Daniel Chesterton/phcimages.com) Photo: Daniel Chesterton
3. Gillingham - 3 points
Steve Evans' side have also picked up three pints from their last six games, most recently losing to Pompey on the weekend. (Photo by Jason Brown) Photo: Jason Brown
4. Crewe Alexandra - 4 points
Crewe sit bottom of League One and have only picked up four points from their recent fixtures. (Photo by James Chance/Getty Images) Photo: James Chance