Pompey travel to the Kassam Stadium to face promotion-chasing Oxford United in the Sky Bet League One.
Both sides had different outcomes in their last matches with Portsmouth winning 1-0 against Port Vale thanks to a Colby Bishop penalty. John Mousinho's side have received the most penalties in the division and Bishop's effort from 12-yards was their eighth of the 2023/24 league campaign.
The U's meanwhile suffered a 3-1 defeat to local rivals Bristol Rovers at the weekend. Mark Harris pulled a goal back for Des Buckingham's side after Chris Martin and Luke Thomas had given the Gas a two-goal lead but Chelsea loanee Harvey Vale made sure of the victory in the 77th minute.
The latest round of results has Portsmouth top but with Bolton Wanderers, Peterborough United and Derby County all breathing down their necks. Oxford are currently outside the play-offs on the virtue of goal difference but can at least move above Stevenage should they win and results go in their favour.
Ahead of the game, Portsmouth confirmed the arrival of striker Callum Lang on Monday. He has signed from Wigan Athletic for an undisclosed fee and has joined in time that he could make his debut on Tuesday night. Mousinho will be faced with a huge decision as to whether to include him in the squad, and it is unlikely that he will start having only trained with the team on Monday.
The January transfer window shuts on Thursday night, and it could mean that some players could be playing their final game for their respective clubs. Mousinho envisages the club doing more business ahead of the deadline.
Des Buckingham and John Mousinho's injury lists are long and makes for up to 14 absentees. Here's the latest injury and team news ahead of the EFL League One action on Tuesday evening.
17. Callum Lang - doubt (continued)
John Mousinho said on January 29:" I think if you look at all indications in terms of injuries this season he's been absolutely fine. He's been involved in the majority of Wigan's games. "I think falling out of favour recently and the transfer looming, he hasn't had a huge amount of involvement over the past couple of games which is absolutely fine. "It's the only thing we have to consider. Over the past week or so with the possibility of this happening, whether he can come in straight away is probably too much and wed also monitor that on the side of having him on the bench. "I think we've got to be sensible in how we introduce him." | Portsmouth FC
18. Josh Dockerill - out
Suffered an ACL injury in pre-season. Out for the campaign. Photo: Jason Brown