Digest of Rules
This Digest of Rules of the National Football League has been prepared to aid players, fans, and members of the press, radio, and television media in their understanding of the game.
It is not meant to be a substitute for the official rule book. In any case of conflict between these explanations and the official rules, the rules always have precedence.
In order to make it easier to coordinate the information in this digest, the topics discussed generally follow the order of the rule book.
Responsibilities and positioning of each game official.
Explanations of football terminology.
Descriptions and categories of infractions.
Descriptions of the field and the rules regarding it.
Descriptions of the footballs required for each game.
Descriptions of the method of conducting the pre-game coin toss and the choices involved.
The parameters and responsibilities of rules and monitoring of game timing.
The parameters for deciding tied games in sudden-death overtime.
Descriptions of time-keeping for the final minutes.
Explanations of extra-point procedures.
Parameters for player participation and substitutions.
Descriptions of kickoff regulations.
Explanations for kicks after safeties.
Explanations for kicks after safeties.
Field placement of kicks after field-goal attempts.
The specifications for calling a safety.
The ball spot used for measurements.
Requirements for player positioning at scrimmage.
Rules and exceptions.
Explanations applying to the passing game.
Conditions and parameters of this penalty.
Rules regarding quarterbacks.
The rights and restrictions of offensive and defensive players in pass coverage.
The conditions and restrictions of laterals.
Restrictions, spots and advancements of fumbles.
Regulations regarding scrimmage kicks.
Parameters for fair catches on punts or kickoffs.
Specifics for the final-play situation.
Four basic spots from where penalties are marked off.
The contingencies of double fouls.
The conditions for penalties being tacked onto the following kickoff.
Outlining the authority of the commissioner's office and the referee.
Describes the commissioner's sole authority in dealing with instances outside the accepted boundaries of conduct.
The penalties related to teams being removed from the field by any game personnel other than the referee.

