Harvin (illness) won't practice Wednesday.

Harvin has been dealing with migraines of late, an issue that kept him from playing this past Sunday against the Jaguars. That he's not ready to practice as of Wednesday signals that Harvin is not a lock to take the field this weekend against the Raiders. With Robert Woods looking iffy to return this week, Justin Hunter could see an expanded role in the Bills' Week 13 wideout corps, which has been bolstered by the return of Sammy Watkins.

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