inemen with initial position completely inside the tackle box [inside the alignment of the offensive tackles] may legally block below the waist inside the tackle box until the ball leaves the tackle box. All other Team A players are allowed to block below the waist only if the force of the initial contact is directed from the front. “Directed from the front” is defined as within the clock face region between “10 o’clock and 2 o’clock” forward of the area of concentration of the player being blocked.
Exceptions:
-Team A players may not block below the waist when the block occurs five yards or more beyond the neutral zone.
-Players outside thetackle boxat the snap ,or any time after the snap, or in motion at the snap may not block below the waist toward the original position of the ball at the snap.
-Once the ball has left the tackle box, a player may not block below the waist toward his own end line.