In all our games so far, Defensive secondary players have intentionally taken out our Fullback's legs when he is lead blocking on an outside running play. Isn't this illegal? In one situation our Fullback' was called for the illegal block. In another situation our Offensive Tackle cut a Defensive End that is lined up just outside of him in a three point stance on the line of scrimmage. Out player was again called for an illegal block. What is defined as the blocking zone? My understanding is that the blocking zone is a yard on each side of the LOS and from Tackle to Tackle.