Dallas Cowboys quarterback Jameill Showers (7) is tackled by San Francisco 49ers defensive back Marcus Cromartie (47) during the second half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 23, 2015.
Dallas Cowboys quarterback Jameill Showers (7) is tackled by San Francisco 49ers defensive back Marcus Cromartie (47) during the second half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 23, 2015. Tony Avelar AP
Dallas Cowboys quarterback Jameill Showers (7) is tackled by San Francisco 49ers defensive back Marcus Cromartie (47) during the second half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 23, 2015. Tony Avelar AP