Officials visit every NFL camp before the season.
- If a replay review inside of one minute of either half results in the on-field ruling being reversed and the correct ruling would not have stopped the game clock, then the officials will run 10 seconds off the game clock before permitting the ball to be put in play on the ready-for-play signal. * The eligible jersey numbers for defensive linemen, linebackers and centers have expanded. * During a field goal attempt, punt, or a try-kick, a defensive player who is within one yard of the line of scrimmage at the snap must have his entire body outside the snapper's shoulder pads. * The ball will be dead if a runner's helmet comes off. * If a loose ball in play strikes a video board, guide wire, sky cam, or any other object, the ball will be dead immediately and the down will be replayed from the previous spot. * The penalty yardage for interference when a kicking team player attempts to catch a muffed kick has been eliminated. * Protection for defenseless players has been standardized and expanded. * After the half has expired, dead ball personal fouls by the offense or defense will be enforced on the succeeding kickoff. * In overtime of postseason games, a field goal by the team that posses the ball first will not end the game.