Article 16 A chop block is a foul by the offense in which one offensive player (designated as A1 for
purposes of this rule) blocks a defensive player in the area of the thigh or lower while another offensive
player (A2) occupies that same defensive player in one of the circumstances described in subsections (1)
through (10) below.
CHOP BLOCK ON RUN (BY A LINEMAN)
(6) On a running play, A1, an offensive lineman, chops a defensive player after the defensive player has
been engaged by A2 (high or low), and the initial alignment of A2 is more than one position away from
A1. This rule applies only when the block occurs at a time when the flow of the play is clearly away
from A1.