Allen Park, MI (SportsNetwork.com) - The Detroit Lions listed wide receiver Calvin Johnson as questionable on the team's final injury report on Friday, leaving his status uncertain for Sunday's matchup with the Cleveland Browns.
Johnson missed Detroit's Week 5 loss to the Green Bay Packers with a right knee injury and sat out Wednesday's practice before returning to the field on a limited basis over the last two days.
According to the Lions' website, the All Pro wideout ran routes and caught passes from quarterback Matthew Stafford during Friday's session, but it remains unclear whether he will be ready to return to game action against the Browns.
Tight end Tony Scheffler and running back Theo Riddick have already been ruled out with concussions, while wide receiver Nate Burleson will miss his third straight game recovering from a broken forearm.
Safety Louis Delmas is listed as probable despite sitting out Friday's session with a knee injury and being limited on Thursday.
Cornerback Chris Houston (hamstring), linebacker Ashlee Palmer (ankle) and safety Glover Quin (ankle) are all expected to join Delmas on the defensive side of the ball after being deemed probable for Sunday.