Andrew Pace
In basketball, the cylinder rule, also known as the cylinder principle, states that a defensive player may not enter the cylinder of the offensive player with the ball and cause illegal contact when the offensive player is attempting a normal basketball play within their cylinder. The cylinder is an imaginary area surrounding a player, extending from the floor to as high as they can jump or extend their arms, and it is used to define the legal space that a player may occupy on the court. The diameter of the cylinder is defined by the player's body position, typically extending to the hands/arms in front, the buttocks in the rear, and the legs on the sides. This rule helps to ensure that offensive players have the freedom of movement to attempt basketball moves without being impeded by defenders.
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What You'll Learn
The cylinder rule definition
The cylinder rule in basketball refers to an imaginary cylinder surrounding a player, which defines the space that they may legally occupy on the court. This cylinder extends from the floor to as high as the player can jump or extend their arms and body. The diameter of the cylinder is determined by the player's stance, with the front boundary marked by the hands/arms (when the arms are bent at the elbow), the rear boundary by the buttocks, and the sides by the legs. As such, the dimensions of the cylinder can vary depending on the height and size of the player.
The cylinder rule aims to protect offensive players by ensuring they have enough space to make normal basketball plays, such as shooting, passing, dribbling, or pivoting. Defensive players are not allowed to invade the vertical space of the offensive player's cylinder and make illegal contact when the offensive player is attempting one of these normal basketball plays. If the defensive player enters the cylinder and causes illegal contact, it is considered a foul and will be called by the referee.
It is important to note that the cylinder rule interpretation can be subjective, and the judgement of whether a defender has violated the cylinder or if the cylinder violates the defender's space can be challenging. This rule was introduced to address sportsmanship issues and rebalance the rules between offensive and defensive players, providing offensive players with more freedom of movement when attempting basketball moves.
The cylinder rule took effect for the 2016-2017 season, and while it has been criticised by some, it remains an important interpretation of the rules in basketball, particularly in college and NCAA basketball.
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The cylinder rule's history
The cylinder rule in basketball was introduced ahead of the 2016-2017 season to address a growing sportsmanship problem in the sport. The rule states that an imaginary cylinder surrounds each player, extending from the floor to as high as they can jump or extend their arms and body. The diameter of the cylinder is defined by the player's height and size, extending to the front of the body when the elbows are bent. This cylinder represents the personal space of the player, which the defence cannot invade to make illegal contact when the offensive player is attempting a normal basketball play such as shooting, passing, dribbling or pivoting.
The cylinder rule is intended to give the offensive player room to turn when receiving a pass or grabbing a rebound. However, it has proven controversial, with some arguing that it prevents defenders from applying legitimate ball pressure. The rule can be difficult to interpret, and even officials have expressed dislike for it.
The cylinder rule also applies to basket interference, which occurs when a player touches the ball or basket when the ball is on the rim or within the imaginary cylinder extending upwards. This includes reaching up through the basket from below to touch the ball, or pulling down on the rim so that it contacts the ball. However, there is an exception for a player near their own basket who has legal contact with the ball; it is not a violation if their contact continues after the ball enters the cylinder or if they touch the basket in the process.
While the cylinder rule was introduced to promote sportsmanship, it has been criticised for overcomplicating the game and taking away from the defenders' ability to play good defence. The interpretation of the rule can vary, and it may be called differently by different officials, leading to confusion among players and fans.
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How to avoid a cylinder violation
To avoid a cylinder violation in basketball, players and coaches must understand the rule and take steps to ensure legal player positioning during inbounds plays. Here are several strategies to prevent cylinder violations:
First, players must be aware of the three-foot landing space rule. When an inbounder is preparing to throw the ball in, the inbounder's landing space is defined as a corridor that extends three feet to the left and right of the spot where the inbounder is standing. This area belongs to the inbounder, and no other player should enter it. To avoid a cylinder violation, players must ensure they do not step into this landing space. They should position themselves outside of this three-foot area and maintain this position until the ball is released by the inbounder.
Secondly, players should use proper pivoting techniques. The pivot foot is crucial in avoiding cylinder violations. The inbounder must establish a pivot foot when releasing the ball, and this foot cannot be lifted or moved until the pass is made. Other players must also be mindful of their pivot foot when receiving the inbound pass. They should establish a pivot foot and ensure they do not step or move in any direction that would violate the cylinder rule. Practicing proper pivoting techniques is essential for all players, especially those involved in inbounding situations.
Additionally, clear and precise communication between players is vital. Inbounders should provide clear signals or instructions to their teammates about their intended pass or play. This communication helps receivers anticipate the pass and position themselves accordingly without violating the cylinder rule. Hand signals, eye contact, and verbal cues can all be used to effectively communicate during an inbound play.
Another strategy is to utilize a variety of inbound plays. By having a diverse set of plays, you can create different options for the inbounder and receivers, making it easier to find open spaces and avoid cylinder violations. Practice a range of inbounding scenarios, such as the "stack" formation, where players line up behind each other to provide multiple passing options, or the "box" formation, which creates passing lanes and allows for quick, precise passes.
Finally, players should focus on developing their spatial awareness. This includes understanding the proximity of teammates and opponents and anticipating their movements. By being aware of their surroundings, players can avoid accidental collisions or illegal positioning that could lead to a cylinder violation. Drills that emphasize spatial recognition and quick decision-making can help players improve their court awareness and reduce the likelihood of committing cylinder violations.
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Judgement of a cylinder violation
The cylinder rule in basketball is a rule that defines the space that a player may legally occupy on the court. This space is determined by an imaginary cylinder surrounding the player, extending from the floor to as high as the player can jump or extend their arms and body. The diameter of the cylinder is defined by the player's hands/arms in front (with elbows bent), buttocks at the rear, and legs on the sides. These dimensions can vary depending on the player's height and size.
The cylinder rule aims to protect offensive players by ensuring they have enough space to perform normal basketball plays, such as shooting, passing, dribbling, or pivoting. It also helps maintain sportsmanship by preventing defenders from invading the offensive player's cylinder and making illegal contact.
When judging a cylinder violation, referees should consider the following:
- The position of the players: The cylinder rule applies to both the offensive and defensive players. The offensive player's cylinder defines their legal space on the court, while defenders must be careful not to invade this space and make illegal contact.
- Normal basketball plays: A normal basketball play for the offensive player includes shooting, passing, dribbling, or pivoting. If the defensive player invades the cylinder during these plays and makes illegal contact, it is a violation and a foul will be called on the defender.
- Contact: The type and extent of contact between players are crucial. Incidental contact may not always result in a foul, but if the defensive player makes significant contact that affects the offensive player's ability to perform a normal basketball play, it is likely to be considered a violation.
- Intent and context: The referee should consider the intent and actions of both players. For example, an offensive player swiping their arms to create space and making contact with a defender may be interpreted as an attempt to gain space rather than a deliberate offensive foul.
- Player movement: The cylinder dimensions can change as players move and extend their bodies. The cylinder extends with the player as they jump or stretch, and the diameter adjusts based on their arm and leg positions.
- Player size and height: The cylinder dimensions vary depending on the player's size and height. Taller or larger players will have larger cylinders, while shorter or smaller players will have smaller cylinders.
In summary, judging a cylinder violation involves assessing the positions, actions, and contact between offensive and defensive players within the context of the cylinder rule. Referees must consider the intent, movement, and physical characteristics of the players to determine whether illegal contact has occurred and if a cylinder violation has taken place.
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The cylinder rule's impact on sportsmanship
The cylinder rule in basketball has had a significant impact on sportsmanship and the way the game is played. This rule dictates that a player who drives to the basket and jumps to shoot or pass has a 'cylinder-shaped' area of space that is protected by the rules. The cylinder is an imaginary area directly above the player, extending upward and including the player's body and arms. It is a violation for a defender to enter this cylinder and interfere with the offensive player's shot or movement.
The cylinder rule promotes fair play and sportsmanship by providing a clear framework for what constitutes legal and illegal defensive play. It encourages defenders to maintain a respectful distance from offensive players and discourages physical contact that could be deemed excessive or unsportsmanlike. By defining the cylinder area, the rule provides a visual and understandable boundary that players, referees, and spectators can easily identify. This clarity helps to reduce disputes and misunderstandings during games, fostering a more harmonious and respectful environment.
Additionally, the cylinder rule encourages good sportsmanship by emphasizing skill and strategy over physical dominance. Defenders must rely on their agility, quickness, and strategic positioning to disrupt shots or passes without intruding on the offensive player's cylinder. This aspect of the game promotes fair competition and rewards players for their skill and tactical thinking rather than simply their physical attributes. It also encourages teamwork, as defenders must communicate and collaborate effectively to defend without committing cylinder violations.
The cylinder rule also has an impact on the flow and pace of the game, which in turn can influence sportsmanship. By providing a clear definition of illegal defensive play, the rule helps to prevent frequent stoppages and arguments over foul calls. This contributes to a smoother and more continuous game, reducing frustration and promoting a more positive playing experience for all involved. The cylinder rule also encourages players to focus on their technique and strategy, which can lead to a more skillful and refined style of play, enhancing the overall sportsmanship and enjoyment of the game.
Overall, the cylinder rule in basketball has had a positive impact on sportsmanship by providing a clear framework for legal defensive play, promoting respect and fair competition, and emphasizing skill and strategy. It helps to maintain a harmonious playing environment, reduce disputes, and encourage players to focus on their technique and teamwork. As a result, the cylinder rule contributes to a more enjoyable and sportsmanlike experience for players, coaches, and spectators alike.
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Frequently asked questions
A cylinder violation occurs when a defensive player enters the cylinder of the offensive player with the ball and causes illegal contact when the offensive player is attempting a normal basketball play within their cylinder.
The cylinder is an imaginary area surrounding a player, extending from the floor to as high as they can jump or extend their arms. The diameter of the cylinder is defined by the player's hips, rear, and the space in front of them when their elbows are bent and they are holding the ball.
A normal basketball play includes shooting, passing, dribbling, or pivoting.
If the defensive player invades the cylinder and there is any contact other than the offensive player clearing out space, then the foul is called on the defender.
Yes, the offensive player cannot spread their legs or arms outside of their cylinder and cause illegal contact with the defensive player in order to gain additional space.
