"His MRI revealed a right ankle sprain but at this point it doesn't appear serious, which is obviously good news," said head coach Ken Whisenhunt. "In terms of missing time, it's tough to say now but we should have a better idea in the coming days."
Wells and the Cardinals agreed to a five-year deal worth $11.1 million, including a little more than $6 million in guaranteed money on Friday night. He was the team's first-round selection in the 2009 NFL Draft, 31st overall.
RB Chris Wells' MRI Results Returned
CardinalsSource Top Stories
Instant analysis: Slow start dooms ArizonaThe Arizona Cardinals suffered through a dismal start on offense in the team's first road trip of the season.
Four defensive linemen out for ArizonaArizona is without rookie defensive lineman Robert Nkemdiche for Sunday's contest in Buffalo.
Watford to replace injured Mathis SundayBruce Arians ruled Evan Mathis out for Sunday's game in Buffalo.
CardinalsSourceFriday at 4:03 PM
Bettcher sizes up BuffaloAfter allowing just seven points to Tampa Bay last week, the Arizona Cardinals travel to take on a Buffalo offense that scored 31 points in week two.
CardinalsSourceFriday at 10:32 AM