The Posh Under 21s were beaten 4-0 by Sheffield United at the Bespoke Builds Training Ground.
The Peterborough United Under 21s suffered a 4-0 defeat to a clinical Sheffield United team at a blustery Bespoke Builds Training Ground, but defenders Tom O'Connor and David Okagbue got much needed minutes.
The Blades, who saw their Under 18s beaten 2-0 by Posh at the weekend, were always in control, leading 3-0 at the interval after a combination of good finishing and poor marking cost the hosts.
United added a fourth goal in stoppage time following a long goalkeeper clearance, which carried in the wind allowing a brave header to beat Bastian Smith.
Patryk Sykut saw two efforts saved by the Blades goalkeeper while Eddie Fox's deflected effort was well kept out.
Posh: Smith, Bushell, Okagbue, O'Connor (sub Claxton 46min), Joseph, Andrews (sub Jones 62min), Sykut, Abbey, McWilliams-Marcano (sub Morgan-Antonio 78min), Simmons, Fox. Unused subs: Arber, Bucknor, Christoudias, Dagne.