BIG MACK ATTACK The Arizona Cardinals have signed veteran RB Marlon Mack and released long snapper Jack Coco. Mack has 2,568 rushing yards (4.4 avg) with 24 total touchdowns in six career seasons for the Colts, 49ers and Broncos. #cards #azcardinals #arizonacardinals #arizonacardinalsfootball #football #nfl #trainingcamp #marlonmack