Coaching and officiating the rules are extremely important to maintain the integrity of the game, and to
minimize risk to the athletes participating in the game. The following are rules identified as a reminder to all
coaches and game officials involved in football to minimize risk.
Free-Blocking Zone
For many years, the NFHS Football Rules Committee has addressed a variety of rules related to the free-
blocking zone and blocking below the waist. Currently, the rules have been modified and updated to allow
blocking below the waist in a specific zone and within a very short period of time. Low blocks can sometimes
result in lower leg injuries. On the other hand, blocking below the waist helps to level the playing field for those
players who are at a size disadvantage compared to that of their opponents. The committee continues to stress
the importance of officiating the rule as written, instead of prohibiting blocking below the waist completely.
The free-blocking zone is a rectangular area extending laterally four yards either side of the spot of the
snap and three yards behind each line of scrimmage. A player is in the free-blocking zone when any part of his
or her body is in the zone at the snap. All players involved in the block must be on the line of scrimmage, in the
zone at the snap and the contact must take place within the zone. Blocking below the waist is permitted from the
time the ball is snapped until the ball leaves the zone. When the free-blocking zone exists, offensive and
defensive linemen may block each other below the waist. Backs, linebackers and receivers are not permitted to
block below the waist.
When the ball is directly snapped hand-to-hand to a back, a block below the waist is legal as long as the
blocks are between linemen who were in the zone at the snap, the contact is in the zone, and the ball has not left
the zone. As long as the ball remains in the zone, those players may legally block below the waist.
When the ball is snapped to a back in shotgun formation, however, the ball leaves the zone, and the zone
disintegrates almost immediately. To be legal, a block below the waist must occur immediately after, and nearly
simultaneously with, the snap. Any delay would cause the block to occur after the ball has left the zone. It is
nearly impossible for a lineman in a two-point stance to legally block below the waist in this situation because
of the time required for the lineman to drop from an upright position and block an opponent below the waist.
For linemen in three- or four-point stances, they must block their opponents immediately after the snap in order
for a low block to be legal in this situation.
Prior to the snap, game officials should be aware of whether the ball will be snapped hand-to-hand or to
a back in shotgun formation, player positioning and alignment, and which players may legally block below the
waist.
Illegal Equipment
No player shall participate while wearing illegal equipment. This applies to any equipment, which in the
opinion of the umpire is dangerous, confusing or inappropriate. The coaches’ pregame verification to the referee
and umpire that all players are properly equipped in compliance with the rules also includes the exterior helmet
warning labels. Coaches should bring casts, braces and other such items to the game officials’ attention so that
the umpire can inspect the items.
Players should be instructed on how to wear equipment properly, and must wear all mandatory
equipment when participating in the game. When a player’s equipment becomes damaged during play, it must
be corrected before the player may participate further.
Players cannot be allowed to participate in the game, and substitutes cannot be allowed to become
players when they are not properly wearing required equipment or when they are wearing illegal equipment.
Game officials should not allow players to enter the game or let the ball become live when they observe
infractions of the equipment rule. It is not always necessary for a game official to call a foul and penalize a team
if game officials are able to make the player and coach aware of the problem so it can be fixed before the ball
becomes live.
Sideline Interference
To ensure the safety of all involved, non-players, including substitutes, athletic trainers and coaches,
must remain in their team box and out of any restricted areas, especially while the ball is live. Non-players may