Myles Garrett of the Cleveland Browns was suspended for at least the rest of the season on Friday for pulling off the helmet of Steelers quarterback Mason Rudolph and hitting him in the head with it. Garrett’s suspension was the longest for any player for a single on-field incident.

The N.F.L. said in a tweet on Friday that Garrett would need to meet with league officials to be reinstated next season.

Two other players, Steelers center Maurkice Pouncey and Browns defensive tackle Larry Ogunjobi , were also suspended, and the Browns and Steelers were fined $250,000 each for their roles in the incident, which occurred on Thursday night in Cleveland. The league said other players, including those who left the bench to join an on-field skirmish, would face discipline as a review of the situation continued.

The owners of the Browns, Jimmy and Dee Haslam, said they were disappointed about the fight and understood the punishments.