Ewan Fieldhouse was on target for the under 18s, but they were beaten by local rivals.
The Peterborough United under 18s slipped to a 2-1 defeat at local rivals Cambridge United at the weekend with Ewan Fieldhouse scoring the goal for Jack Collison's men.
Collison took the opportunity to blood a number of under 16s in the cup fixture, but admitted that he was disappointed with the result.
"Just as the young boys are getting their opportunity in the first team, we are trying to do the same for the under 18s and that filters down the Academy. The policy that we are trying to adopt is if they are good enough, let's get them in the team, it doesn't matter what age they are.
"It all stemmed from their hard work. We had a game at the training ground on Wednesday and some of the boys did well so I thought it was the perfect opportunity to give them a chance. Unfortunately, result-wise, it didn't go too well. It is disappointing to lose, especially to Cambridge in the cup, but for these young boys it is a good learning curve to sample a local derby in a cup fixture.
"Ewan scored his first goal for the season. There was nothing in the game really, it probably should have been a draw if I am honest, but Cambridge managed to nick it 2-1. We conceded two sloppy goals, we will work on that and then try and develop more of a cutting edge going forward," Collison said.
Posh: Elsom, Noble, Cartwright, Connor, Freestone, Jarvis, Barker, Penfold, Maddison, Gurney, Stump. Subs: Hart, Fieldhouse, Piesse, Strachan, Brown.