James Bolton has endured a difficult start to his Pompey career since arriving at the club last summer.
The right-back – who signed from Shrewsbury – has made just seven League One starts so far this season.
But he came on midway through the victory over Ipswich just before Christmas and played the whole 90 minutes of Boxing Day’s defeat of Wycombe.
The Blues kept clean sheets in both of those encounters against the top two in the division and Bolton hopes he has done enough to keep his place for Sunday’s trip to MK Dons.
He said: “I personally need games – I need to be out on the pitch in order to keep my match fitness levels up.
“It’s going to be hard when you’re in the team for one game and then out of it for the next. That’s always going to be a tough.
"I have to try to keep my place and do what I can, so picking up results like the last two games will obviously help."
“That’s all part of being a footballer, though, and so you just have to get on with it and do your best when you do play.
“Of course you’re not going to enjoy it as much when you’re not involved, so I want to keep pushing forward and helping the team.
“I have to try to keep my place and do what I can, so picking up results like the last two games will obviously help.
“We’ve got confidence at the moment and hope we can get a few more over the festive period, starting at MK Dons.”
Goals from Ben Close and Ronan Curtis saw Pompey overcome League One leaders Wycombe at Fratton Park.
Bolton said: “We really dug in and took our chances when they came along – that’s what made the difference.
“Everyone knew it was going to be a really tough game, so we were pleased to achieve the three points.”
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