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Grier is listed as questionable for Sunday's game against the Falcons due to a knee injury, Michael Gehlken of The Dallas Morning News reports.

Grier popped up as a limited participant at Friday's practice due to a knee injury. It is unclear when the issue was sustained, but it presumably occurred at some point during the week. His status as the team's No. 3 quarterback will now depend on how he is feeling closer to kickoff.

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