Russell Slade made one change from the side which won at MK Dons on the final day of the season for this afternoon's play-off semi-final at Peterborough United, bringing Scott Cuthbert in for Gary Sawyer.
The former Plymouth defender dropped to the bench in the O's only change.
Posh boss Darren Ferguson made eight changes after rotating heavily in the draw at Port Vale, with only Bobby Olejnik, Craig Alcock and Jack Baldwin retaining their places.
Peterborough United: Olejnik; Little, Alcock, Baldwin, Ntlhe; Bostwick; Payne, Rowe (c); Swanson; Assombalonga, Ajose.
Subs: McCann, Newell, Knight-Percival, Washington, McQuoid, Isgrove, Day (GK).
Leyton Orient: Jones; Cuthbert, Baudry, Clarke (c), Omozusi; Odubajo, Lundstram, Vincelot, Cox; Lisbie, Mooney.
Subs: Sawyer, James, Batt, Bartley, Dagnall, Ness, Larkins (GK).