Dallas Cowboys quarterback Jameill Showers (7) and quarterback Dak Prescott (4) look on during a walk-through practice at Cowboys training camp.
Dallas Cowboys quarterback Jameill Showers (7) and quarterback Dak Prescott (4) look on during a walk-through practice at Cowboys training camp. Max Faulkner mfaulkner@star-telegram.com
Dallas Cowboys quarterback Jameill Showers (7) and quarterback Dak Prescott (4) look on during a walk-through practice at Cowboys training camp. Max Faulkner mfaulkner@star-telegram.com

Time to call Jerry’s bluff about Cowboys backup QB

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UPDATED August 09, 2016 10:46 PM

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