On Tuesday, the NFL punished Buffalo Bills backup offensive lineman Bobby Hart for one game.
Hart attempted a swing at a Titans player and instead punched a Tennessee coach in the head during the Bills' 41-7 victory.
Hart has the option to appeal the judgement made by the league's vice president of football operations, Jon Runyan.
Runyan stated in a letter to Hart that the confrontation occurred near the end zone as both teams were exiting the field.
According to Runyan, Hart approached a Titans player, the identity of whom was not revealed, and was restrained by a coach as other players shook hands in the end zone near the tunnel leading to the teams' locker rooms.
Hart is then accused of closing his fist and firing a punch that struck a Titans coach, the identity of whom is also unknown.
Runyan wrote, "Your violent behaviour may have resulted in serious injury and definitely does not reflect the high norms of sportsmanship required of a professional".
Rodger Saffold's primary backup, Hart, played 17 snaps on Monday, including seven on special teams.