Lions coach Jim Schwartz said quarterback Matthew Stafford is unlikely to play Sunday against Arizona. "He's getting a little better, but he's still a ways away," Schwartz said.
Stafford, safety Louis Delmas (ankle), receiver Dennis Northcutt (groin) and long snapper Don Muhlbach (head) didn't practice Wednesday. Wide receiver Calvin Johnson (knee) was among those limited in practice. ... Schwartz said running back Kevin Smith has at least a torn anterior cruciate ligament. He said the swelling was down and Smith was walking without crutches while awaiting surgery. "He's actually walking around great," Schwartz said. "He's doing great. He's doing outstanding." ... Tight end Brandon Pettigrew is scheduled to have surgery on his torn ACL this week.