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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13. Ipswich Town - 7 points
Another surprise as the Tractor boys are among a whole host of clubs on seven points in the form table. A recent win against Crewe sees Paul Cook’s side sit 11th in League One. (Photo by Ashley Allen/Getty Images) Photo: Ashley Allen
14. Wycombe Wanderers - 8 points
Gareth Ainsworth’s promotion-chasing side have also slipped up in recent weeks, including a 1-0 defeat to Danny Cowley’s men and a 4-1 battering to Ipswich. More importantly, they took three points at Plymouth and a draw at Sheffield Wednesday. (Photo by Gareth Copley/Getty Images) Photo: Gareth Copley
15. Shrewsbury Town - 8 points
Although Steve Cotterill’s men sit 19th in League One, a surprise victory against Charlton on Saturday has seen them move two points above the drop zone and pick up eight points from a possible 18. (Photo by Ashley Allen/Getty Images) Photo: Ashley Allen
16. Bolton Wanderers - 8 points
Ian Evatt’s Bolton sit mid-table in League One following their promotion last season and have had a mixed set of results in recent weeks, which included a 1-0 defeat to Pompey. (Photo by Alex Livesey/Getty Images) Photo: Alex Livesey