MINNEAPOLIS — The NFL's hard line on Adrian Peterson held up.
The league-appointed arbitrator for Peterson's appeal affirmed the unpaid suspension until at least next spring, the final result of the child-abuse case that kept the Minnesota running back out of all but one game this season and widened the rift between the NFL and its players over the fairness of the disciplinary process.
The decision by Harold Henderson, a former league official, was announced Friday.
That means Peterson, though he avoided jail time and a felony conviction, has been fined more than $4.1 million as part of the punishment from the NFL. That's the cost of the six-game suspension that was issued Nov. 18 under the league's personal conduct policy. He will not be considered for reinstatement before April 15.
According to a person with direct knowledge of the situation, a lawsuit will be filed against the NFL on Peterson's behalf in federal court in Minnesota as early as Monday. The person spoke to the Associated Press on condition of anonymity because the lawsuit had not yet been filed.
Peterson told ESPN.com that he might walk away from the game, possibly even trying to run in the 2016 Olympics.
"I've considered retiring from the NFL," Peterson said. "I still made $8 million this year. ... I've thought about going after the Olympics. You only live once. It might be time for me to pursue that."
The NFL Players Association called Henderson's objectivity into question.