Tyler Polumbus (Jonathan Newton/The Washington Post)

Redskins right tackle Tyler Polumbus returned to practice Friday morning a day after sitting out as he recovered from a concussion suffered on Sunday against Cleveland.

Redskins coach Mike Shanahan said on Thursday that Polumbus still had a chance to play on Sunday at Philadelphia, but that the fourth-year pro was still being monitored for concussion symptoms and hadn’t yet been cleared for contact.

Polumbus’s return on Friday seems to indicate that he continues to make progress. Shanahan will provide further updates following practice.

Robert Griffin III (knee) and center Will Montgomery (knee) also practiced Friday during the portion of the session open to reporters were

Linebackers London Fletcher, who has been limited by an ankle injury, and Lorenzo Alexander, who suffered a shoulder injury on Sunday, were not seen during the early portion of practice.