What is the difference between encroachment, offside and a neutral-zone infraction?
–Stephanie, Chicago Encroachment is a defensive foul and occurs when a defensive player makes contact with an offensive player prior to the snap. If the ball is snapped, the snap is negated and a five-yard penalty against the defense is assessed. Offside occurs when a player of either team is in the neutral zone (the width of the football) at the snap. Offensive offside is rare because all players are restricted from any movement once they are set. This movement would be considered a false start. Defensive teams often charge into the neutral zone, anticipating the snap count and are caught in the neutral zone before the snap. Sometimes, defensive players line up in the neutral zone and even with no movement at the snap, are penalized for offside. The referee would announce “Offside, defense, lining up in the neutral zone.” A neutral zone infraction occurs when a defensive player jumps into the neutral zone prior to the snap, causing an offensive player in his vicinity to false start.
