Rushden took the lead in the NFA U18 Youth final just short of the half-time break, with a goal from Wigglesworth.
Above, Posh go close with a chance from a corner.
Above, Rushden go forward attempting to solidify their win.
The 150 Rushden fans present were rewarded as Lewis Hallford scored twice in the second half to give Rushden a 3-0 win.
Mirroring the senior squad, the Diamonds U18 team finished the season in winning ways.