FILE - In this Nov. 4, 2014, file photo, Minnesota Vikings running back Adrian Peterson speaks to the media after pleading no contest to an assault charge in Conroe, Texas. The NFL suspended Adrian Peterson without pay for at least the remainder of the season. The league said Tuesday, Nov. 18, 2014, it informed the Minnesota Vikings running back he will not be considered for reinstatement before April 15 for violating the NFL personal conduct policy.  (AP Photo/Pat Sullivan, File)

Union takes NFL to court over Adrian Peterson

The union believes an arbitrator’s decision was biased and overreaching, contrary to “fundamental principles of notice, fairness and consistency” and the essence of the CBA.