The Detroit Lions have a new injury concern on their starting defense, but it's not a major one.

Safety Kerby Joseph is listed as questionable for Sunday's home opener against the Chicago Bears after he was added to the injury report Friday with a knee injury.

Joseph, who signed a four-year extension this offseason that made him at the time the NFL's highest-paid safety , missed time in training camp with a knee problem but played all 48 defensive snaps in the team's season-opening loss to the Green Bay Packers.

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