Jack Friend scored his second successive hat-trick as the Posh under 18s beat MK Dons 6-3.
The Peterborough United under 18s made it nine goals in two games as Dave Robertson's men came from behind to beat the Milton Keynes Dons 6-3 in the latest Youth Alliance League fixture.
Posh have two fixtures remaining, against Cambridge United on Tuesday afternoon and at AFC Wimbledon on Saturday and four points will secure the runners-up spot in the league. Barnet clinched the title with a big win over Dagenham and Redbridge.
Posh fell behind early as the goals fllowed with five inside the opening quarter of an hour. Friend was joined on the score-sheet by Jonathan Edwards, Ben Keating and Bradley Maslen-Jones, with the latter notching his first goal for the club.
'It was a very entertaining and open game. When I looked at my watch with the score-line at 3-2 to ourselves, we had only played 11 minutes, so I knew it was going to be an eventful day! I don't think you would expect anything else from these two teams, both were expansive in their approach.
'We were 4-2 up at the interval and we obviously wanted to build on that in the second half, but we conceded inside five minutes, which was frustrating. We scored two quick goals from Jack Friend, his second of which was an exceptional strike on his weaker right foot.
'It has been two pleasing performances having changed to a new formation. The players have been free-scoring which shows the attacking emphasis of our play. We have two games remaining and if we get four points we will be guaranteed to finish runners-up.
'The first half of the campaign has been very promising. I have to give credit to Jack who scored his second successive hat-trick. I have to say that Jack is one of the best finishers I have ever worked with as a coach, it is something that comes natural to him. I am pleased for him that he is in such fine form and long may it continue.'
Posh: Ravas, Ward, Luto, Goode, Maslen-Jones, Lee, Hood, Keating, Friend, Edwards, Adebayo-Rowling.