Jonson Clarke-Harris was on target, but the Posh reserves were beaten 3-1 by Leyton Orient.
Striker Jonson Clarke-Harris was on target for the Peterborough United reserve side, but t it was visitors Leyton Orient who claimed a 3-1 victory.
Orient, managed by former Posh centre back Andy Edwards fell behind to a close-range Clarke-Harris strike in the first 10 minutes, but the O's took their chances and recorded an away win.
Goalkeeper Joe Day made two excellent stops, one in each half, to keep the score at 3-1.
Craig Alcock completed 90 minutes while Peter Grant and James Sage also came through the full fixture.
Posh: Day, Alcock, Sage, Grant, Burgess (sub Butt), Lawlor, Coulson, Wood, Anderson, Gordon, Clarke-Harris.