Portsmouth were once again pegged back in injury time on Saturday and will be looking to claim all three points on Tuesday night.
Gareth Evans gave Pompey the lead at Fratton Park against Oxford United but once again they conceded late on to throw away three points, with Matt Taylor netting in injury time for the visitors.
They will have the chance to bounce back straight away, however, when Southend United visit in midweek and Jackett and co. will be keen to see a three-point haul.
But under Sol Campbell, Southend will likely be seeing improvements soon so although Portsmouth will go into this as favourites, they will need to keep their wits about them.
Will Portsmouth beat Southend on Tuesday night?
The Irishman is having a torrid time so far this season and taking him out of the side would surely be for the best of all involved.
With the likes of Ellis Harrison and Andy Cannon waiting on the bench to come back into the fold, it is a change that we will surely see in one form or the other on Tuesday night.
Whether that is in a change of shape, with Harrision partnerting Marquis up front, or with the former Bristol Rovers man playing out wide remains to be seen.
Change of shape
Jackett has stuck with the 4-2-3-1 formation throughout the current campaign but it is questionable how many people in the side it is actually benefitting.
Marquis is often left isolated whilst the creative players have struggled to make their mark either.
Perhaps changing to a strike pairing and a variation on a 4-4-2 would benefit them and is something that Jackett should be considering.