The Posh under 18s moved to within a point of the league leaders with a 4-3 win at Northampton Town.
The Peterborough United under 18s claimed the bragging rights for the second successive week after a 4-3 victory at local rivals Northampton Town on Saturday morning.
Dave Robertson's men were victorious against Cambridge United last weekend and followed it up with a narrow win against the Cobblers following an end to end encounter.
It was a topsy-turvy tussle with Town with Posh taking the lead four times only for the hosts to peg them back on three occasions with Tye Phillips' second half strike the decider.
Phillips coolly converted a one-on-one opportunity to secure the points, his second of the game. Strike partner Jack Friend, in red-hot form for both the under 18s and the development side, netted twice, but missed the chance to complete his hat-trick in the first half when his penalty was saved.
Robertson said: 'The half time team-talk was one of disbelief to be honest because when you score three goals away from home you expect to be leading, but credit to Northampton they kept coming back. However, we know that we need to be better defensively.
'In the second half we tightened things up a bit, but still created plenty of chances and Tye took his chance well. We had Liam Marshall, Ollie Luto and Jonny Edwards missing due to suspension and injury and those three are all second-year scholars so it is credit to those that came in.
'They performed well and there is no given right that those lads who were suspended will come straight back in. We have a good squad this year,' Robertson said.
Posh: Henry, Robinson, Goode, Ward, Lee, Keating, Adebyao-Rowling, Anderson, De Silva-Lopes, Phillips, Friend.