Taking a look at Wednesday's practice report:
Chicago Bears: Coach Lovie Smith confirmed that defensive end Julius Peppers has a knee sprain. The Bears did not practice Wednesday, but Smith said he hoped to get Peppers on the field by the end of this week. It sounds as though Peppers has a decent chance to play Sunday night against the Minnesota Vikings. Defensive tackle Matt Toeaina has a knee injury that could keep him out several weeks, opening the door for rookie Stephen Paea to make his first appearance of the season.
Detroit Lions: Like the Bears, the Lions did not practice Wednesday. Linebacker Justin Durant (concussion) told reporters he will visit a doctor Thursday in hopes of being cleared to play after missing the past two games.
Green Bay Packers: Offensive lineman Bryan Bulaga (knee) returned to practice on a limited basis. Coach Mike McCarthy said he didn't know whether Bulaga would be ready for Sunday's game against the St. Louis Rams. McCarthy also wasn't ready to declare a starter at left tackle for Chad Clifton (hamstring). There are three conceivable candidates: Bulaga, Derek Sherrod and Marshall Newhouse.
Minnesota Vikings: Cornerback Antoine Winfield (neck) did not practice Wednesday, but coach Leslie Frazier is holding out hope for a late-week return to practice. Winfield did not play last Sunday against the Arizona Cardinals.