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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17. Cheltenham Town - 9 points
Michael’s Duff’s side sit eighth in the form table and are unbeaten in their last five which has seen them take points off high-flying Pompey and Sheffield Wednesday. (Photo by Charlotte Tattersall/Getty Images) Photo: Charlotte Tattersall
18. Charlton Athletic - 11 points
Johnnie Jackson has overseen a resurgent Charlton side in recent weeks which saw the Addicks unbeaten in six league games before a shock loss to Shrewsbury. They sit seventh in the form table. (Photo by Jacques Feeney/Getty Images) Photo: Jacques Feeney
19. Sheffield Wednesday - 12 points
Darren Moore’s side are unbeaten in their last 10 League One games which has seen them take maximum points off promotion rivals Sunderland and MK Dons in recent weeks. (Photo by George Wood/Getty Images) Photo: George Wood
20. MK Dons - 12 points
Over the previous six League One games, surprise package MK Dons have lost twice in League One, winning the remaining four against lower-placed teams. (Photo by Pete Norton/Getty Images) Photo: Pete Norton