Jones will 'sleep good' over Zack Martin, roundup of Cowboys injuries
Dallas Cowboys cut five players, including two on defense
Dallas Cowboys defensive back Jameill Showers (28) defends against the Cincinnati Bengals during the second half of a preseason NFL football game in Arlington, Texas, Saturday, Aug. 18, 2018. (AP Photo/Michael Ainsworth
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Cowboys feel quarterback Jameill Showers has ability to play in NFL