The Posh Under 21s suffered a 3-1 defeat to Sheffield United on Tuesday afternoon.
The Peterborough United Under 21s slipped to a 3-1 defeat at the hands of Sheffield United in Professional Development League action on Tuesday afternoon with the Blades coming back from 1-0 down to secure all three points.
Ryan Semple's men looked lively in attack with Donay O'Brien-Brady seeing a number of efforts go wide of the target from distance.
The deadlock was broken on 28 minutes and it was one for the dubious goals committee as Harley Mills' shot took a deflection via the body of one of the Posh trialists and nestled in the back of the net.
The hosts were twice denied by goalkeeper Jake West before they levelled the scores as Louie Marsh, returning to the XI after injury, fired low past the keeper from just inside the penalty area.
The Blades got their noses in fornt just ahead of the half-time whistle and it was Marsh again, as his curling free-kick from 20-yards found the back of the net via the inside of the post.
On 69 minutes, the hosts extended their advantage as Fernando Macedo fired past West from inside the box.
Trialist B saw a fierce drive tipped over by the keeper on 80 minutes, Pemi Aderoju saw a weak header claimed and Will Van Lier went close as Posh tried to pull a goal back, but to no avail.
Posh:West, Fox, Mills, Van Lier, Thomas, Trialist A, Odei-Larbi (sub Kawa 52min), Trialist B, Aderoju, O'Brien-Brady, Trialist C (sub Marshall 69min). Unused subs: Sakalas, Chiha, Toynton.