Louis Thompson was making his first start since being stretched off the pitch with a broken leg back in August.
Having made a series of substitute appearances in recent weeks, he made it through almost an hour at Peterborough.
Unfortunately, the game ended in a 2-1 defeat, although the Blues were left bewildered by a decision to disallow Reeco Hackett’s strike in the second half.
Thompson is pleased to be in the team from the first whistle again, although his mood was tempered by the final score.
The midfielder said: “It’s disappointing to come away with no points, although on a personal note, it’s nice to be back on the pitch from the start.
“I felt good physically, although there’s a bit of ring-rust there – a few more games should get rid of that.
"It’s disappointing to come away with no points, although on a personal note, it’s nice to be back on the pitch from the start."
“But you only come away happy if you win the match and unfortunately we couldn’t do that on this occasion.
“I didn’t see the disallowed goal, but it gave them something to hang on to. We fought back, but had to do more before that point.
“We lacked a bit of quality at times and there’s a lot for us to work on in order to get back to where we need to be.
“The two wins provided a change of energy and we’ve shown some fighting spirit, so the free week ahead gives us time on the training pitch to work on the philosophy we’re trying to implement.”
Thompson was coming up against his brother – and former Pompey defender – Nathan, who was utilised at right-back for the Posh.
He said: “When you’re playing you don’t really think about it too much, although of course it’s nice to both be on the same pitch.
“You cross the white line and don’t really recognise that it’s your brother – he’s an opponent and you do what you can for your team.”