Want to learn the basic knowledge of basketball

Introduction to the position of basketball players on the court

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Point guard (PG) The point guard has the most chances to get the ball on the court. He wants to bring the ball safely from the backcourt to the frontcourt, and then pass it to other teammates so that others can score. If the small forward is the protagonist of a play, then the point guard is the director of the play. How to be a qualified point guard? First of all, his dribbling ability is absolutely indispensable. When only one person defends him, he must be able to pass the ball across the half court without any problem. Then, he must have good passing ability, and he can pass the ball where it should go most of the time: sometimes it is a gap in shooting, and sometimes it is a better guide. Simply put, he wants to make the ball smooth, and he wants to be able to pass the ball to the place where it is easiest to score. Furthermore, he should organize his own team's attack and make his teammates' attack more smooth. There are other requirements for the point guard. In terms of scoring, the player who controls the ball is often the team's last scorer, which means that unless other teammates don't have a good chance to shoot, he won't shoot easily. Or to put it another way, his scoring ability is very strong. He uses his scoring ability to destroy the opponent's defense and create opportunities for his teammates. In short, there is an unchangeable principle for the point player: if any teammate has a better chance to play on the spot than him, he will definitely give the ball to the teammate with a better chance. Therefore, it is often a good opportunity to shoot a shot by a player. Naturally, we have higher requirements for his shooting percentage. Generally speaking, it should be above 50%, higher than small forward and shooting guard. In scoring ability, perimeter and cut-in are two indispensable tools for him. Point guard (SG) Point guard, from its meaning, it is not difficult to know that his main task is to score. He is the second leading scorer in the field after the small forward, but he doesn't need to practice singles skills like the small forward because his teammates often help him find a gap and shoot. However, because of this, his outside accuracy and stability should be very good. Shooting guards often have to do two things. First, there is a good gap to shoot the outside line, so his outside line must be accurate and stable. Otherwise, if teammates try their best to block a good opportunity but fail to score, it will do a great blow to the morale and confidence of the whole team. The second is to find a small gap to throw an outside line, so he has to be quick. A good shooting guard can't expect such a good gap every time. He should be able to find shooting opportunities in a short time, and his shooting percentage should be at a certain level. This can stall the enemy's defense, and the defensive circle must be opened, which is more conducive to teammates' attack in the restricted area. So, the shooting percentage of the shooting guard must be very high, right? Actually, it is not. Because although we hope he has a good aim, we should not forget that his shots are often quite far. We can't expect a shooter to shoot from the outside more accurately than others at the basket! What's more, the shooting guard sometimes has to find a chance to shoot alone or find a gap in the gap, so his shooting rate will not be too high, which is understandable. Generally speaking, it is good to reach 47% or 48%, and more than 50% is the best choice. Small forward (SF) is the team's most important scorer. The most fundamental requirement for a small forward is to score, and it is a long-distance score. As soon as the small forward receives the ball, his first thought is how to put the ball into the basket. He may rebound, but it is not necessary; He may pass the ball well, but it is not necessary; He may bounce well, but it's still unnecessary; He may defend well, but it's still unnecessary. The basic job of a small forward is to score, score and score again. Small forward is the position with the lowest requirement for shooting percentage. Generally speaking, as long as 45% is qualified, more than 40% is acceptable. Of course, there is a premise that he wants to score goals. If a small forward averages seven or eight points per game and hits only 40%, it is better to let him sit on the bench. On the other hand, why can the shooting percentage of small forwards be lower? Because he is the main scorer in the team, he often has to take the initiative to look for opportunities to shoot, stabilize the morale of the army at some moments, and even boost morale by singling out opponents in more difficult ways, and even give opponents a fright and a head-on blow. So the small forward will have more chances to shoot, or it may be a bad chance, so we can allow him to play lower, as long as he can score. Power forward (PF) Power forward's tasks in the team are almost all hard work. Rebound, defense and blocking are all indispensable to him, but he is often the last to score. So power forward can be regarded as the most inconspicuous role on the basketball court. The first job of power forward is to rebound. Power forward is usually the person who rebounds the most on the team. He is stuck in the penalty area, cooperates with the center and often provokes the rebounding task of the whole team. When attacking, he often helps his teammates to block people, and then tries to squeeze in to grab rebounds and carry out the second wave of attack after his teammates shoot. Usually only a few hours, the power forward will be asked to sink to the bottom of the singles. At this time, he will turn over and shoot a small hook near the restricted area and do some close-range attacks. Because power forwards usually shoot fewer times and their shooting positions are often close to the basket, their shooting percentage is naturally higher. In terms of five positions on the court, the power forward should have the highest hit rate, and a good power forward should reach more than 55%. But because scoring is not his strong point, he can score few points, but he must grab more rebounds. In addition, Hotpot's defensive ability is naturally necessary for power forward, because he wants to consolidate the restricted area, and defense is of course important. In fact, power forward is to do two things well: rebounding and defense. In the past, power forwards often had to practice hard and had little chance to catch the ball and play singles on the court. But now the concept of basketball is changing with each passing day, and the power forward is gradually strengthening in attack, which is the biggest difference between the past and the present. However, a good power forward should focus on the efforts in the penalty area. A player who can rebound and defend but has poor offensive ability will be called a good power forward, but a player who can score well but fails in rebounding and defending is not a power forward at all. Center, as its name implies, is the core of a team. He spends most of his time selling labor and figures in the restricted area. He is offensive and defensive, and the center of the team, so he is called the center. What will the center do? First of all, since he lives in the restricted area, rebounding is absolutely indispensable. Again, the restricted area is a battleground for all teams. Of course, opponents can't attack it easily, so the ability to block attacks and build hot pot is also indispensable. When attacking, the center often has the opportunity to stand in the penalty area near the free throw line (which is the center of the whole attack field) to catch the ball. At this time, he should also have good ball guiding ability and send the ball to a more suitable corner. The above three items are the basic skills that a center should have. In the team, the center is often responsible for scoring. He is the main inside scorer, corresponding to the inside and outside small forward. Because he wants to play singles, his shooting percentage can be lower, but his hand is often closer to the basket, so his shooting percentage is higher. Generally speaking, 52% can be used as a standard. The requirement of center's hit rate is second only to that of power forward. A good center needs versatility. In attack, the center should have the ability to play singles near the basket, and he should be able to play singles with his back to the basket. Turning shot is the most common one, while jumping and hooking are more difficult to defend. Defensively, to be a good center, you should not only defend the players you should watch, but also help your teammates defend in time. To put it simply, if an enemy player bypasses his teammates' defense and enters the basket, the center should have the courage to make peace, while one person guards and defends his own restricted area. Of course, it doesn't mean that you can't leak it every time, but you always have the ability to "help". If a center can only keep his own people, it is not enough (unless the opponent is a super offensive center). There is a deformation of the center, which is called the outer center. The difference between him and the normal center is that his attack is mainly to shoot outside shots, and less to do singles in the restricted area. Because the center is tall, other short people can't keep it at all, so the outside shooting can pull the opposing center out, so it is also very useful when the striker is strong. When defending, just like the average center, defend the opposing center and rebound as usual.

NBA technical statistics abbreviation meaning

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3P% 3-point hit rate 3PM 3-point success

3: 00 p.m.-A three-point shot/throw times APG assists per game.

AST assists AVG to score points per game.

Successful shooting times of BLK Blue Cricket FG

Shooting percentage (excluding free throws) FGM hits

Free throw percentage

FTM-A hit forward F with a free throw.

G guard c center

G-F defender forward F-G small forward

G appearances HI the highest score in a single game this season.

Minimum MPG score of total playing time per game

PF foul PPG average score

PTS total score ST steal

Basketball injury and its prevention and treatment

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Playing basketball is prone to "bone and joint injury". That is, young people whose bones are not hardened are most prone to knee edema when their knees are strongly stimulated. Preventive measures: do some exercises that strongly stimulate the knee, such as total knee flexion and rabbit jumping. Don't go too far, and at the same time train and strengthen the exercises around the knee joint. 1. Before ankle sprain practice, wrap the ankle with adhesive tape (trip stick and bandage) to slightly prevent sprain. However, the most effective way is to prepare the ankle and kick the ball unilaterally, and at the same time strengthen the muscles that should not be done. If you are unfortunately sprained, first apply cold compress to the affected area and apply appropriate pressure. Only cold compress with ice water, press with sponge, and wrap it with elastic bandage from above the sponge. 2. Finger tingling is caused by strong impact on fingers. Prevention method: fully prepare for finger movement. Finger injuries can be divided into five types according to the degree: 1. Sprain, 2. Dislocation, 3. Fracture, 4. Tendon rupture, 5. Blunt injury (split skin). If a sprain occurs, its treatment method is the same as that of other parts, and cold compress should be carried out first. After 2 ~ 3 days, the part should be kept warm and massaged at the same time. When dislocated, you should be able to bear the pain, let the medical staff straighten your fingers, restore them to their original state, and then dispose of them as before. As for serious finger injury, fracture and tendon rupture, it is not allowed to move. It is the best policy to send a doctor for treatment quickly. 3. Dislocation of the muscle exerts a sharp force (flexion and extension) on the muscle, which breaks the muscle fiber or part of the muscle membrane in the muscle and causes internal bleeding. Precautionary measures: Rub the muscles of all parts before practice to relax them, especially the players with hard muscles, and pay special attention to them in hot and cold seasons. The treatment method is as follows: if it happens in the leg, fix the knee for 2 ~ 3 days first, do not move at will, and use water or cold compress at the same time. Bandage can prevent the expansion of internal bleeding. After this treatment, keep warm a little and engage in relaxation activities. The characteristics of treatment are: after the internal bleeding stops, although the body still feels stiff, it should be slightly active. 4. Foot swelling and pain, foot movement; Especially when I practice moving and stopping for a long time, I feel that my heel hurts twice. This disease is also called calcaneal osteopathy, because when the foot looks at the ground, the fatty tissue between the bone and the heel skin is damaged by many sharp impacts. Its prevention method: pad a soft sponge under the heel or pad cotton on the inside of the heel, which can prevent the subcutaneous tissue from being pressed to one side despite the force from below. The method of treating heel pain is not easy to operate. Only before the pain is relieved, try to avoid the strong impact on the heel, and then do treatment after practice, such as hot compress with a warm wet towel. Therefore, if this disease is ignored, it will often become a chronic disease and it is difficult to treat. It is best to treat the symptoms at the early stage. 5. Knee injury It is easy to get injured when the knee is strongly hit. Prevention: Use knee pads. If you get a strong blow or impact, the treatment depends on the situation. If it is serious, you must have an operation. 6. The foot injury caused by the friction of sports shoes, as long as you put on clean and wrinkle-free socks, and then put on suitable sports shoes, should have a certain degree of prevention. If there are blisters caused by the friction of sports shoes, don't break them rashly. It is best to sterilize this part first, then squeeze out the liquid wrapped with sterilized stitches, and then post an OK itinerary. 7. Cornus is the keratinization and value-added part of skin. If the core is deep enough to reach the inside of the dermis, carefully cut off the added value bit by bit with a razor. Prevention: when taking a bath, rub thick skin with pumice.

A brief description of the main terms of basketball

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(1) Dunk: The athlete holds the ball with one hand or both hands, jumps in the air, and directly pours the ball into the basket from top to bottom. (2) Make-up: When the shot is missed, the athlete jumps in the air to make up the ball in the basket. (3) Blocking: The attacker blocks the defender behind him with footwork. This footwork is called blocking. (4) Catch the ball: move along the passing flight direction to facilitate catching the ball. (5) Dislocation defense: The defender stands next to the attacker he defends and prevents him from catching the ball, which is called dislocation defense. (6) Important position: The attacker blocks the defender behind him with his body and occupies a favorable position to catch the ball. (7) Breakthrough: Break through the defender with the ball. (8) Empty cut: The attacker ran to the basket empty-handed. (9) One pass: The receiver passes the ball 1 time from defense to attack. (10) Blocking: When the attacker shoots, the defender tries to hit the ball out of the air. (1 1) Complement: When 1 defender loses the correct defensive position, other 1 defenders make up the correct defensive position in time. (12) assist in defense: assist in defending peers. (13) Press defense: Keep close to the attacker, and constantly threaten the opponent's ball control safety or prevent the opponent from receiving the ball with offensive and defensive actions. (14) Oblique insertion: Run diagonally from the sideline to the basket or the center of the field. (15) Time difference: When shooting, in order to avoid the cover of the opponent's defense, the air block is used to change the shooting time. (16) serve: The offensive player without the ball takes the initiative to grab the position and receive the ball. (17) Down: During the transition between attack and defense, the positions of both sides are arranged. (18) Coordination: The attacker receives and transfers the ball through the tactical coordination organized by the players in the frontcourt or the middle of the whole court, resulting in attack opportunities such as empty cutting, bypassing cutting and covering. (19) Cover: An offensive cooperation in which the attacker blocks the opponent's way with reasonable technical movements and creates opportunities for the partner to get rid of the defense. (20) Sudden score: The offensive player with the ball passes the ball after breaking through. (2 1) cross-cut: The attacker with the ball uses the empty cut immediately after passing the ball and must catch the ball to attack. (22) Make-up: When 1 defender loses his position and the attacker has the possibility of scoring directly, another 1 defender nearby immediately gives up his opponent and breaks through the defensive attacker with the ball. (23) Changing the defense: the defenders exchange the defense. (24) Closing the door: The two adjacent players of the defending player with the ball quickly move closer to the direction of the attacker's breakthrough, forming a "barrier" to block the attacker's breakthrough route. (25) Attack: Two defenders * * * get stuck 1 the attacker and block their passing route. (26) Squeeze: When two attackers cooperate with each other, the members of the protected person approach to the back, seize the position at the moment when the attackers are about to complete the cooperation, squeeze between the two attackers from the side, destroy their cover and continue to defend their opponents. (27) Crossing: When the attacker covers, the defender's players are slightly away from each other, so that the companions can pass through their own cover players and continue to defend each other.

The birth of basketball rules

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Basketball was invented by Mr. james naismith of Springfield University in the United States in 189 1 year. The earliest rules of basketball game were also formulated by Mr Naismith. At that time, he made basketball rules for the following purposes: ① Basketball is played by hand and the ball is round; ② Walking or running with the ball in hand is not allowed; (3) Athletes can go anywhere on the field as long as it does not affect or hinder other athletes; ④ Physical contact between athletes is not allowed; ⑤ The hoop should be horizontal. According to these five basic principles, Mr. naismith made the most primitive rules of basketball match. There are 13 original basketball competition rules. The basic content of this article 13 is: 1. Players can throw the ball in any direction with one hand or both hands. 2. Players can catch the ball in any direction with one hand or both hands, but they must never hit the ball with their fists. Players can't take the ball away. You must hold the ball with your hand, but you are not allowed to kick the ball with your head and feet. 5. Players are not allowed to use shoulder bump, hand pull, hand push, hand bump, foot trip and other methods to deal with opposing players. Any player who violates this rule is regarded as the first foul and will be forced to stop playing until he hits the target. If you intentionally hurt the opposing player, you will be disqualified from participating in the whole game and will not be allowed to substitute. 6. It is against rules 3 and 4 to hit the ball with fists. 7. If either side fouls three times in a row, it is counted as the other side's goal. Continuous foul refers to: during a period of time, the opposing team members did not foul, while their own team members fouled continuously. 8. If the defender doesn't touch or interfere with the ball, when the ball is thrown into the basket and stays in it, it is considered a basket. If the ball stops at the basket and the other team touches the basket, it is also a fortune teller. 9. When the ball is out of bounds, the ball will be thrown into the field by the first person who touches it. If there is an argument, the referee will throw the ball into the field. Throw a foul ball for five seconds. After more than 5 seconds, the ball was awarded to the opponent. 10. The referee is the referee of the player, and he has the right to call a foul. When a team fouls three times in a row, he will notify the assistant referee. He has the right to declare an athlete disqualified. 1 1. The assistant referee is the referee of this ball. He can decide the time of the ball in the game, he should count the time, decide the stroke of the ball, record the number of strokes of the ball, and bear the responsibility that the referee should bear at ordinary times. 12. The game will be played in two 15 minutes with a 5-minute break. 13. The team that hits the ball the most wins. If there is a draw, with the consent of both captains, the game can be postponed until another goal is scored. Although the original 13 basketball competition rules are not systematic and complete, and some terms are not clear enough, they have played a great role in promoting the development of basketball in the early stage. In particular, basketball has developed into a modern basketball sport today, and the technical and tactical level is getting higher and higher, so the rules are even more important. It requires strict, scientific and systematic management of basketball games.

Development of basketball rules

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The modification of rules promotes the development of basketball, and the continuous improvement of basketball skills and tactics promotes the appropriate modification or supplement of imperfect rules, thus making basketball develop in a healthy and advanced direction. Rules and basketball skills and tactics, like productivity and relations of production, are complementary, interdependent and mutually reinforcing. By affirming, denying, allowing or not allowing, the rules ensure the normal progress of basketball games and promote the healthy development of basketball. The action that conforms to the rules of the field is the correct action, and vice versa. The rules have developed from the initial 13 to the present 58, and the basketball skills and tactics have developed from the initial simple low level to the present high level, which is the result of their mutual restriction and promotion for many years. For example, the development of dribbling technology from the initial elbow joint as the axis to the current shoulder joint as the axis is precisely the result of the constant affirmation of the developing technology by the rules. Now the rules clearly point out that the symbol of the end of dribbling is the moment when both hands touch the ball or dribble with the palm up, and the thumb exceeds the vertical plane to end the dribbling. If the palm of your hand is always down and your thumb is not above the vertical plane, it is impossible to keep the ball in your hand. Therefore, the modern technology of arm dribbling with shoulder joint as the axis and one-handed back-pulling and back-turning dribbling has been affirmed in legal form. Another example: the development of shooting techniques, from the initial in-situ two-handed chest shooting to top-down dunk, one-handed or two-handed basketball and other superb techniques, the rules clearly stipulate that all players are shooting. Therefore, modern technologies such as dunk and makeup have developed rapidly. In recent years, there have been many techniques in the competition, such as back jump shot, back jump shot and hook jump shot, which are also determined by the basic principles of dealing with physical contact and foul, such as vertical plane principle and flying man principle. When dealing with fouls, the guiding ideology of offensive and defensive balance is particularly emphasized, forcing and promoting shooters to adopt various forms of jump shot techniques, get rid of defense and avoid hitting people because of fouls, so as to achieve the goal of scoring and promote the continuous development of defensive tactics. Under normal circumstances, FIBA will revise and supplement the rules every four years, with the purpose of promoting the further development of basketball skills and tactics, limiting rude movements and making the game develop in a civilized, clean, intense and hard-working direction. The change of rules is unknowable, and no one can change it at will on a whim. It is carried out according to a certain review purpose. The specific guiding principle for modifying the rules is: 1. Fair. This is the basis for modifying the rules. Rules should be fair to both sides of the game. Because the basketball game is a contest of basketball consciousness, skills and tactics and physical quality between the two sides under the same conditions of time, space, venue and number of people. 2. Balance. Balance (or balance) means that both offense and defense must be balanced. If a game is easy to score or difficult to score, it will make the game dull and not exciting, then the wonderful charm of the basketball game will be lost. 3. Define the meaning. The definition of rules should be concise and accurate. 4. compile. Rules should be compiled, avoid duplication, be consistent and not contradictory. 5. Keep it short. The rules should be short and to the point, and avoid verbosity that makes people difficult to understand. 6. Outside the case. There are many rules in front of the rules. If there are no exceptions (that is, comments), it is difficult to enforce the rules. The exception is to ensure the implementation of positive law. 7. Safety. Rules should ensure personal safety and the smooth running of the competition in a good environment and atmosphere. 8. power. The referee must be given the power to execute the rules competently and authoritatively in the competition. 9. Continuation. The rules should minimize the number of interruptions of the game, so as to ensure the continuity of the game and make the game more compact and exciting. 10. No profit. Rules should make no one in the game benefit from violating the rules, so that the game can be played fairly and reasonably.

Development of NBA basketball rules

From China Basketball Referee Network.

2003/0 1/0 1

The National Basketball Association (NBA) was officially named on August 3, 1949. Its predecessor was the American Basketball Association (BAA) founded on June 6, 1946. The NBA has a history of more than 50 years, with remarkable achievements and world-renowned reputation. NBA is the league of American professional basketball teams, and its rules are necessarily different from FIBA rules formulated by the International Amateur Basketball Federation. NBA rules not only contain all kinds of indispensable and effective rules in FIBA rules, but also have their own distinct regional, commercial and guarantee and promote wonderful performances. The following is an important part of NBA rules (focusing on the parts different from FIBA rules) for readers' reference. (1) General rules of the game 1. The size of the NBA stadium is 94 feet (28.65 meters) long and 50 feet (15.24 meters) wide. The spacing is measured from the inner edge of the boundary line with a line width of 2 feet (5.08 cm). Rectangular penalty areas are marked at both ends of the stadium, which are 19 feet (5.79 meters) long and 16 feet (4.88 meters) wide. The two ends of the court are marked with 3-point shooting lines. The drawing method is as follows: draw two lines parallel to the sideline from the baseline, each of which is 3 feet (0.9 1 m) away from the sideline and intersects with an arc with a radius of 23 feet 9 inches (7.24 meters) centered on the center of the basket. The arc radius of WNBA is 19 feet 9 inches (6.02 meters). The radius of a circle is 6 feet (1.83 meters). The radius of the middle circle is 2 feet (0.6 1 m), and there is a middle line running through it. There are also four marking lines with a width of 2 inches (5.08 cm) perpendicular to the sideline. Each marking line is 28 feet (8.53 m) away from the baseline and extends 3 feet (0.9 1 m) into the field. (Position area and neutral area and some short marking lines are omitted. The specific specifications are shown in the figure.

2. Competition time: Each competition is divided into two and a half hours ***4 sessions, each session 12 minutes. Work overtime for five minutes. There is a break between the first and second quarters, and the third and fourth quarters 130 seconds. Half-time 15 minutes. Take a break between the fourth quarter and overtime and between any overtime 100 seconds. At the last minute of the first, second and third quarters, the game timing should be stopped after the shooting is successful. In the fourth quarter and the last two minutes of overtime, you should stop the game timing after shooting successfully. 3. In the team competition, there are 5 people in each team, and the number of people on the field shall not be less than 5. If a player commits a personal foul for the sixth time and the team does not have a qualified substitute, the player should stay on the court and register as a personal foul and a team foul; The team will also be fined for technical fouls. All subsequent personal fouls (including offensive fouls) should be handled in this way. If there are only five qualified players, and one of them has to leave or be expelled due to injury, it should be replaced by the last player who has been disqualified for six games due to personal foul. Every time it is necessary to replace an injured or expelled player, it should be handled in this reverse order. Any disqualified player who participates in the competition again will be fined for technical foul. 4. The first quarter of the game and overtime should start from the middle jump ball. The second and third quarters should start with the team that lost the ball after the kick-off in the first quarter throwing a foul ball at the finish line. In the fourth quarter, the team that gets the ball immediately after the kick-off in the first quarter should start by throwing a foul ball at the finish line. 5. Dead ball, live ball, pressure ball When the following situations occur, the ball becomes a dead ball: fighting for the ball; The ball stays on the basket or gets stuck between the basket and the backboard; Any period of time is over; A free throw for a technical foul; Personal foul (boxing foul, non-competition foul); The first of many free throws; Foul on the court (take the ball for 3 seconds, 10 seconds, 24 seconds, etc. ); Foul in a fight; Supervision post; After successful shooting or free throw; Before the players go out of bounds. The ball survives in the following situations: in any jump ball, when the referee throws the ball; When the player who throws the foul ball can handle the ball; When the penalty taker can handle the ball. The ball becomes a dynamic ball under the following circumstances: when the ball is legally shot by the jumper; When the ball leaves the hand of the player who throws the foul ball; When the ball leaves the free throw player's hand. 6. The substitute should report his name and number to the recorder and stay in the substitute area in front of the recorder. If you don't report to the recorder, you will be fined $25. When the ball becomes a dead ball (except after the successful shooting), the recorder will whistle to announce the substitution, and the substitute players need to be signaled by the referee to enter the game. The time to replace a disqualified player is 30 seconds. After the first free throw of many free throws, substitutes are allowed to enter the game regardless of whether the free throw is correct or not. A substitute shall not replace a free throw player or a jumper unless the injured player asks for a replacement. In this case, the coach of the opposing team shall choose a substitute on the team seat of the free throw (jumper) side. The injured players can't play any more. Once the substitute enters the game, he must stay on the field until the next dead ball. If a player is injured due to unethical behavior and cannot execute a free throw, his coach can designate any qualified player in the team to execute a free throw. Injured players can also play again. 7. Pause (L) for l)20 seconds. Every half hour, each team has the right to ask for a 20-second timeout. Every game (including overtime) * * * can require two 20-second timeouts. A player asks for a 20-second timeout, which will only be suspended when the ball is dead or the team has control of the ball. Players should shout "20-second timeout". During the 20-second timeout, the team can only change one player. If the suspended team is asked to replace a player, the opposing team can also replace a player. If a second 20-second timeout is required at halftime (including overtime), it should be allowed, but the regular timeout should be registered. If the game cannot continue at the end of 20 seconds, you should also register for a regular timeout. (2) Regular suspension (100 second) Each team has the right to request a regular suspension of registration for 7 times. The fourth quarter limits each team to no more than 4 timeouts; In the last two minutes of the fourth quarter, there shall be no more than three pauses. In overtime, each team is allowed to pause three times. The player requests a time-out of 100 second, which will only be given if the ball is dead or the team controls the ball. Players should shout: "Time out". There must be two pauses in each game. If no team calls a timeout with 6 minutes and 59 seconds left in each game, the recorder should take a mandatory timeout at the first dead ball, and this timeout should be registered in the name of the home team. No team calls a second timeout when there are 2 minutes and 59 seconds left in each game, and the recorder has to force a timeout when the ball is dead for the first time. This timeout is registered in the name of the team that has not been registered in this section before. Additional timeouts are allowed, but a technical foul will be awarded. When the game is suspended, the head coach can ask for a 20-second or 100-second timeout. 8.24-second rule When a team gets a new ball in a game, or when the ball is thrown into bounds, the ball is legally touched by the players on the field, and the 24-second timer will start counting. The team that owns the ball must shoot within 24 seconds after getting the ball. The conditions for completing shooting are: (1) Before the end of 24 seconds, the ball must leave the player's hand; (2) After the ball leaves the player's hand, it must touch the basket itself. If the ball doesn't touch the basket within 24 seconds, it's a 24-second violation. (2) Violation and punishment: 1.3 seconds. Team one holds the ball, and the players shall not stay in the restricted area for more than 3 seconds. One team controls the ball in the frontcourt and starts counting for 3 seconds. Penalty: Lose the ball. Give the ball to the opponent and throw a foul ball on the extended free throw line. 2. Elbow Swing: Players are not allowed to swing their elbows excessively or forcefully (no contact). When the defender is nearby and the attacker takes the ball, it is a foul. Penalty: Lose the ball. Give the ball to the opponent and throw a foul ball on the sideline near the foul. 3. Players who illegally assist in scoring shall not use the hoop or backboard to lift, support or improve themselves to help score shots. When shooting, a competitor shall not assist his companion to increase his height. Penalty: Lose the ball. will