Encroachment (American and Canadian football)
In gridiron football, encroachment refers to when before the snap, a defensive player illegally crosses the line of scrimmage and makes contact with an opponent or has a clear path to the quarterback. In high school, this includes any crossing of the neutral zone by the defense, whether contact is made or not. It is a violation of the game's code. It is similar to offside except when it occurs, the play is not allowed to begin. Like offside violations, the violating team is penalized 5 yards.
- Beacom, Mike. The Complete Idiot's Guide to Understanding Football.
- NIRSA. 2009 & 2010 NIRSA Flag & Touch Football Rules Book & Officials' Manual-14th ... p. 39.
- Long, Howie; Czarnecki, John. Football for Dummies. pp. 42–43.