Seeking the rules of American professional football game

1. In order to meet the needs of the league, the home team should have 36 balls for outdoor games and 24 balls for indoor games, which have been tested by the referee with a stress tester two hours before the start of the game. Twelve balls were sealed in a special box, and the new balls sent directly by the manufacturer were opened in the official's locker room two hours before the start of the game.

(II) flip a coin to guess the pros and cons

1. Flip a coin to guess the pros and cons will be held in the middle of the court for three minutes at the tee time. The captains of both sides guessed the pros and cons before throwing the coin. The winning team can choose one of the following two conditions, and the losing team will accept the remaining one

(1) choose to kick off first

(2) choose the defensive field

2. Before the start of the first off, the captains of the two teams must inform the officials of their previous choices, and guess that the losing team has the priority in the first half.

(III) Time

1. The clock in the court is regular. In case the clock stops or runs abnormally, the linesman should control and manage the correct official time on the court.

2. Each session is 15 minutes, with an interval of 2 minutes between sessions and a 12-minute intermission, unless otherwise specified.

3. When the team calls for a time-out, the referee starts to time out and whistle after 1 minute and 5 seconds, unless the TV broadcast doesn't use the time to broadcast the commercial. In this case, the pause time is reduced to 4 seconds.

4. The referee will allow necessary time to give injured players or repair their equipment.

5. Each team has three chances to call a time-out every half.

6. You can have 4 seconds to prepare for each round of attack.

7. Time starts after the kick-off team holds the ball.

8. The last 2 minutes of the first half and the last 5 minutes of the second half are exceptions-the time of out-of-bounds or foul will be removed. The time before the clock returns to out of bounds.

9. The opposing team can immediately call a timeout, but the timeout is reduced to 4 seconds.

1. When the attacker didn't hear the referee's penalty because of the noise of the crowd, he could choose to make the defender reduce a timeout or award a penalty of 5 yards.

(IV) sudden death

1. For all NFL games, the sudden death method is to use the team that scored first in overtime (by all means) to automatically win when there is a tie within the specified time.

2. At the end of the stipulated time, the referee will toss a coin in the middle and the visiting team captain will guess first.

3. There will be a 3-minute break after the end of the game, and then nearly 15 minutes of overtime, until there is a 2-minute break between each overtime. The two sides take turns to divide the ball. Each team has three timeouts at half time, and the players who are sent off cannot play again.

(V) Kick-off

1. At the beginning of the first half and the second half, or after the goal score and try, the starting team should kick off from the team's 3-yard line. Kick-off is a kind of free kick.

2. A 1-inch ball pad can be used when kicking off (it is not allowed to use the ball pad when kicking the target score, safety score or try with the ball). Kick the ball by a positioning kicker.

3. You can't get the target score when kicking off.

4. If the distance crossed by the kick-off is not more than 1 yards or is not touched by the receiving team, then the kick-off is considered illegal. Once the kick-off is touched or crossed by the receiving team by more than 1 yards, the ball becomes a free ball. The catcher can take back the ball and push it. Kicking teams can get back the ball, but they can't push it, unless the receiver has possession of the ball and drops it.

5. If the kick-off is out of bounds within two goal lines and is not touched by the receiving team, then the ball belongs to the receiving team at 3 yards from the kick-off point or at the place where the ball is out of bounds, unless it is out of bounds for the first time when kicking "self-kicking". In this case, the kicker will be fined 5 yards before kicking the ball.

6. If the kick-off is out of bounds within two goal lines, but it is touched by the receiving team, then the ball belongs to the receiving team where the ball is out of bounds.

7. If the kicking team kicks off the borderline illegally, or kicks a short free kick in two or more consecutive self-kicks, then the receiving team can get possession of the ball at the dead ball point, or where the ball is out of bounds, or at the illegal touch point.

(VI) safety score

1. Besides kicking off, another free kick is a kick after kicking the safety score. Fly kick can be used (but not used in kick-off).

2. When kicking a safe score, the team can score points in three ways: kicking the ball in the air, throwing the ball (referring to throwing the rebound ball to the ground) and kicking the set ball without the ball pad. After a safe score, you can't score by kicking the ball freely, even if a series of punishments put the team in such a situation. It is only possible to score a goal by kicking a free kick after fighting for the ball or legally catching it.

(VII) Fair catch kick

After legally catching the ball, the receiving team can choose to kick off; Or kick "legal catch kick" at the legal catch kick line 1 yards away to get the target score. All the general rules apply when fighting for a goal. Start timing when kicking the ball (ball mats are not allowed).

(VIII) Foul at the last stage of half-court or full-court ball

1. Defender fouls, and if he accepts the penalty, he will touch the ground again

2. Offender fouls, and the touchdown will not be repeated, and the touchdown will be invalid

Exception: after receiving the ball, the foul will not be legally contacted, and the attacker will not score points.

(IX) foul point

1. Four basic foul points:

(a) foul place

(b) pre-foul point: kick-off place

(c) the place where the ball is contested, passed back or missed; Foul penalty

(d) Continuous point: If the ball is pushed again in the process of blowing penalty, the tee-off is the blowing penalty.

2. If the attacker fouls behind the line of scrimmage (except in the touchdown area), the penalty will be to kick off at the previous service point. If the ball is in the touchdown area, it will be a safe ball.

3. If the defender fouls behind the line of scrimmage with the ball or unreasonable hands, if he fouls outside the line, the penalty code will be calculated at the line.

(X) Double foul

1. Double foul when handing over the possession of the ball, then the team that got the possession of the ball last before the exchange will get the ball.

2. If there is a double foul after the exchange, the defender will get the ball at the foul or the dead ball.

3. If one of the double fouls is unqualified, the fouler must be sent off, but the code will not be fined.

4. The kicker fouls before the exchange of possession, and the receiver fouls after the exchange, and the receiver gets the ball.

5. When one team scores on the ground, scores goals, extra points or safety points, and the players of the other team commit a foul, they are disqualified as athletes, or their actions are unreasonable when they fall on the ground, they will make a free throw at the kick-off.

(XI) Emergency

Members, officials, employees, players and coaches of rugby union should watch every game, and the league will decide whether to continue the game. In case of unexpected events, such as severe cold weather, natural or human disasters, power failure and audience interference, etc. The competition will be suspended, cancelled, postponed or terminated when the start or continuation of the competition will pose a threat to the safety of contestants and spectators.

(XII) Rights of Committee Office

1. The right to cancel, postpone or terminate the competition is granted only to members and team chairmen. (Representatives from other team offices and referees can temporarily suspend the game; See point 3 below and point 1 under "the rights of judges"), and the specific definition is as follows:

* Cancel. To cancel a game is to invalidate it (whether before or after the start) and not to prepare for rescheduling it or to include its scores and other performance data in the team's records.

* delay. Delaying a game means (a) postponing its start time to a later date or (b) pausing it after the game starts and getting ready to restart at a later time. All scores and other performance data before pausing are added to the scores and data after resuming the game.

* terminated. To terminate the game is to end it in a 6-minute complete game, officially record it as a complete game, and not make further preparations at a later time. A committee member or team chairman may terminate a competition in an emergency. If it is reasonable in his mind, (a) it will not change the final result or (b) it will not adversely affect the competition events of any other participating team.

* eliminated. Except in the case of foul (see the provisions on expulsion in the above part), no committee member, the president of the league and their representatives, including the referee, have the right to unilaterally declare the participating teams eliminated. Elimination can only be announced if the game cannot be played due to the fault of one team or refusal to participate in the second competition. At this time, if the other team is ready and wants to participate, it can win 2-.

2. If there are unexpected circumstances that require the cancellation, postponement or termination of the competition (see the rules above), the highest representative in the Committee office who is in control can consult with the members of the Committee, the president of the League or the responsible official appointed by the League on the day of the competition to confirm this decision. (If the responsible official is not present on that day, please consult with him by telephone). If the environmental conditions of the day have been confirmed, the representatives of the alliance should still consult with the meteorological bureau and the appropriate security personnel of the alliance, clubs, stadiums and local governments. If there was no representative of the Committee office to ensure that the game was under control, the referee would be fully responsible.

3. In case of urgent need to ensure safety, the representative of the committee office can set a time-out after consultation with the referee, and if authorized, they can also remove the contestants from the stadium. Committee representatives should ensure the safety of spectators, players, competition officials, non-competitors in the viewing area and other people on the field, such as photographers and cheerleaders.

4. If possible, the representatives of the office of the league officials can negotiate with the authorized representatives of the two participating clubs to cancel the decision of any committee, including the postponement or termination.

5. if the Committee and the president of the league decide to cancel the postponement and termination of a match, it shall be announced by his representative or the official on the day of the match, for example, by using the public address from the wireless microphone of the referee, using the public area of the home team or contacting the radio and other media.

(XIII) Steps of starting or rematch

The key points of the right to handle such affairs are as follows: The HR department of the League and the referee will start or rematch according to this step under the influence of special emergencies.

1. Because of an emergency, a regular season or playoffs can't kick off as scheduled or delayed in the same day, and the game still needs to be arranged by the Committee on the following date.

2. if an emergency is expected to happen after the start of the competition or during the competition (for example, an upcoming tropical storm), the start time shall not be arranged in advance unless there is obvious or sufficient time to make an orderly change.

3. All the suspended matches will be restarted on the same day. If all competitions are postponed to another date, they will start from the moment of suspension. When the game is suspended, the referee should announce the suspension and record the following data: the team that controls the ball, the direction of the ball, the position, area, distance and time of the game when the ball is present, and any data and information related to the fair start.

4. The postponement of the regular season will be repeated by the Committee within two days of the original match day, and will be held in the same venue. If it cannot be held in the same venue, the Committee will arrange a reasonable and alternative venue competition. If the match cannot be replayed within two days of the original time, it will be scheduled to be repeated on Tuesday next week. The Committee will arrange unfair match time if the players of the two sides play because of the time conflict. (For example, the match has been scheduled for Tuesday)

5. The playoff will be postponed, and the committee will be held in the same venue as soon as possible after the scheduled match. If it is impossible to play in the original venue, the Committee will arrange a reasonable venue to arrange a rematch.

6. in any case, if the game is postponed due to the negligence of the club, the club will bear the expenses of the home team, including the Committee's comments, tickets and TV broadcast income.