The NFL Players Association wants Vikings star Adrian Peterson reinstated immediately, claiming his suspension defied fundamental principles of notice, fairness and consistency.
The NFLPA filed a federal lawsuit Monday in Minneapolis.
The 74-page filing said NFL Commissioner Roger Goodell improperly punished Peterson because Goodell was under criticism for his handling of the incident in which NFL player Ray Rice knocked out his then-fiancée in an elevator.
Goodell "cast aside the suspended players' rights to fundamentally fair disciplinary proceedings and consistent treatment in favor of trying to demonstrate to the world that the NFL had suddenly become vigilant about player safety," the petition said.
The NFLPA petitioned the U.S. District Court in Minneapolis seeking to set aside the arbitration ruling against Peterson on Friday by Harold Henderson, the former NFL executive vice president for labor relations. Henderson ruled that Peterson must remain away from the league and all team activities until at least April 15. Peterson will be eligible to return then if he fulfills requirements set by Goodell on Nov. 18, when he suspended Peterson for the rest of the season.
The NFL did not respond to requests for comment.
The players' union faulted Goodell for retroactively applying enhanced penalties to Peterson. Had the running back been punished under the league policies in place in May, when he struck his son, he would have faced a two-game maximum suspension, the petition said.
Instead, Peterson was whipsawed in the post-Rice storm. On July 24, Rice initially was suspended for two games, the previous maximum for a first-time domestic violence offender. But when the public was not "assuaged," Goodell unilaterally — without collective bargaining — created the new policymaking a six-game suspension the presumptive sentence for a first-time domestic violence offender.