ALLEN PARK, Mich. -- The Detroit Lions had one of its offensive stars back at practice Wednesday -- just as another sat out.

Running back Reggie Bush worked out with the Lions on Wednesday, going through all drills during the media portion of practice, albeit with a protective sleeve on his left knee. Wide receiver Calvin Johnson, though, did not practice Wednesday.

The reason for him sitting out is unknown. The Lions first injury report of the week will come out at 4 p.m.

Detroit actually had a good number of players return to practice who have missed time. Wide receiver Patrick Edwards (ankle), safety Don Carey (hamstring) and right tackle Jason Fox (groin) all worked out Wednesday.

The only players out were safety Louis Delmas (knee), wide receiver Nate Burleson (forearm) and starting left guard Rob Sims, who was in attendance and working off to the side with trainers.