Top overall pick hurt Sunday versus Chicago
ALLEN PARK (AP) -- Lions coach Jim Schwartz says Matthew Stafford is day to day with a knee injury.
Schwartz refused to say Monday whether Stafford's right kneecap was dislocated, adding "we'll know more," on Wednesday.
Stafford, the No. 1 pick in the NFL draft, had the knee twisted on a sack in Sunday's 48-24 loss against the Chicago Bears.
Daunte Culpepper replaced Stafford on the Detroit's next possession, and Stafford got the knee wrapped on the sideline.
Detroit (1-3) hosts the Pittsburgh Steelers (2-2) on Sunday.
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