Lions WR Calvin Johnson has swelling in knee and is not likely to practice this week. HC Jim Schwartz said Johnson will be gametime decision— Adam Schefter (@AdamSchefter) October 10, 2013
Johnson did not practice on Wednesday.
ESPN 96.1 Lions insider Chris McCosky adds that while a few other Lions did not practice on Wednesday, one Lions was back on the field -- without a cast. Nate Burleson returned for warmups and individuals.
According to McCosky, Louis Delmas (knee), Jason Fox (knee), Chris Houston (hamstring), and Theo Riddick (concussion) did not practice on Wednesday.
And then there's Tony Scheffler. The team confirmed that Scheffler was concussed on Sunday against the Packers. Read more about that here.