Rule 2 – Section 3 – Article 2 – Chop Block
A chop block is a high-low or low-high combination block by any two players against an opponent (not the ball carrier) anywhere on the field, with or without a delay between blocks; the “low” component is at the opponent’s thigh or below. (A.R. 9-1-10:I- IV) It is not a foul if the blockers’ opponent initiates the contact. (A.R. 9-1-10:V)