Deflategate tops a "tough year" for the League, says Commissioner Roger Goodell. The NFL has also grappled with domestic violence and child abuse claims.
Peterson, who pleaded no contest in a child abuse case, said he would appeal the decision. The Players Union, on his behalf, said the punishment was "arbitrary."
The star running back avoided jail time after being indicted in September for using a wooden switch to punish his 4-year-old son. The case reignited the debate over corporal punishment in the U.S.
The change in running back Adrian Peterson's status will require him to stay away from the team while he takes care of legal proceedings regarding child abuse charges.