Denver tight end James Casey (80) is hit by 49ers cornerback Kenneth Acker (20) and Corey Lemonier (96) during the first half of an NFL preseason football game, Saturday, Aug. 29, 2015, in Denver.
Denver tight end James Casey (80) is hit by 49ers cornerback Kenneth Acker (20) and Corey Lemonier (96) during the first half of an NFL preseason football game, Saturday, Aug. 29, 2015, in Denver. Jack Dempsey The Associated Press
Denver tight end James Casey (80) is hit by 49ers cornerback Kenneth Acker (20) and Corey Lemonier (96) during the first half of an NFL preseason football game, Saturday, Aug. 29, 2015, in Denver. Jack Dempsey The Associated Press