
The arc inside the paint in basketball refers to the restricted area arc, which is a semi-circular arc located directly underneath the basket. This area is marked by a semicircle that extends four feet out from the center of the basket. The restricted area arc was introduced to enhance player safety by limiting collisions between offensive and defensive players under the basket. It also helps officials make more consistent calls regarding block/charge calls. The restricted area prevents defenders from drawing offensive fouls and encourages faster-paced plays. The dimensions of the restricted area vary depending on the league, with the NBA and NCAA having different measurements. Understanding the restricted area is crucial for players to avoid violations and make strategic decisions.
| Characteristics | Values |
|---|---|
| Purpose | To enhance player safety by limiting collisions between offensive and defensive players under the basket |
| Location | Directly underneath the basket |
| Shape | Semi-circular arc |
| Radius | 4 feet out from the center of the basket |
| Extends to | Front edge of the backboard |
| Foul | If a secondary defender attempts to draw a charge in this area, it will be considered a blocking foul |
| Rules | A primary defender can still draw a charge inside the restricted area |
| Rules | A defensive player cannot draw a foul if contact is made within a moving offense |
| Rules | A defensive player cannot stay in the key for more than three seconds |
| Rules | Offensive players can only be in this area for three seconds |
| Other names | The lane, the paint, the key, the circle, the post, the restricted area, the three-second area |
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What You'll Learn

The restricted area arc prevents player collisions
The restricted area arc, also known as the paint, is a recent innovation in basketball. It is a semi-circular arc under the rim that extends four feet out from the centre of the basket to the front edge of the backboard on both sides of the hoop. The restricted area arc has been introduced to prevent player collisions and enhance player safety.
The restricted area arc is an important addition to the basketball court for players, coaches, and referees. It is designed to prevent collisions between offensive and defensive players under the basket. The restricted area arc takes away any ambiguity in calling block/charge fouls near the rim. If a secondary defender attempts to draw a charge in this area, they will automatically be called for a blocking foul. This is true even if their heel is not touching the ground inside the restricted area arc. However, a primary defender can still draw a charge inside the restricted area.
The restricted area arc also helps prevent players from getting injured. Players know that they cannot legally draw a charge outside the arc, so they will not attempt to do so. This prevents unnecessary contact and falling from both the offence and defence. The restricted area arc also prevents defenders from hacking a ball carrier charging to the basket.
The restricted area arc is located in the lane, which is a marked area on a basketball court surrounding the basket. The lane is usually painted in a distinctive colour and is where much of the game's action takes place. The dimensions of the restricted area vary depending on the league or competition. For example, in the NCAA, the restricted area measures three feet out in every direction from the basket, while in the NBA, it measures four feet.
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It aids officials with the block/charge call
The restricted area arc, also known as the paint, is a recent addition to basketball courts. It is a semi-circular arc under the rim, extending four feet out from the centre of the basket. Its primary purpose is to enhance player safety by limiting collisions between offensive and defensive players under the basket.
The restricted area arc aids officials with the block/charge call by providing a clear boundary that helps determine whether a defensive or offensive foul has occurred. If a secondary defender is inside the restricted area arc and makes contact with an offensive player, they will automatically be called for a blocking foul. This takes the subjectivity out of the call, as officials no longer need to judge whether the defender had established a legal guarding position.
The restricted area arc also helps officials with the block/charge call by providing a clear area where a primary defender can still draw a charge. While a help defender cannot draw a charge inside the restricted area, the offensive player's original defender can. This distinction helps officials quickly identify whether a charge or blocking foul has occurred, especially in fast-paced plays near the rim.
Additionally, the restricted area arc aids officials in enforcing the three-second rule. In most leagues, offensive players can only remain in the paint or key for three seconds. The arc provides a clear boundary for this rule, making it easier for officials to determine if a player has violated the rule.
The introduction of the restricted area arc has significantly impacted the game, particularly in terms of player strategy and officiating. It has reduced the effectiveness of imposing centres, who previously dominated the paint. Now, players must adapt their strategies to make more shots and avoid violations within the restricted area.
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It's also called the 'lane' or ''key'
The "arc" inside the paint in basketball is officially referred to as the “restricted area arc” by the National Basketball Association (NBA) and the National Collegiate Athletic Association (NCAA). It is also called the “restricted area” by the NBA and the “restricted area arc” by the NCAA and NAIA. The arc is a semi-circular line located in the lane, extending four feet out from the center of the basket to the front edge of the backboard on both sides of the hoop.
The area inside the arc is called "the lane" or "the key" because it originally resembled a keyhole, with the free-throw circle as the head and the shaded lane as the body. The key is also referred to as the “free throw lane” by the NBA, NCAA, and other organizations, and simply as “the lane” or “the paint.” The key is a marked area on a basketball court surrounding the basket, where much of the game's action takes place. It is usually painted in a distinctive color.
The key has evolved over time, with its dimensions varying depending on the league or competition. In 1951, the NBA widened the key from six feet to twelve feet. The league further increased its width to sixteen feet in 1964 to reduce the effectiveness of dominant centers, such as Wilt Chamberlain. Today, the NBA's key is a sixteen-foot-wide rectangular area, while the NCAA and NAIA use a twelve-foot rectangular key.
The rules within the key are also different from those outside of it. For example, in the NBA, a defensive player is only allowed to stay in the key for three seconds unless they are directly guarding an opponent. If they exceed this time, their team is charged with a defensive three-second violation, resulting in a technical foul.
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It's 4 feet from the basket
The "arc inside the paint" in basketball refers to the restricted area arc, also known as the no-charge zone arc. This arc is located in the lane and designates the restricted area or "no-charge zone" on the court. The restricted area is a semi-circular arc extending 4 feet out from the center of the basket, or from the projection of the basket onto the court. This area is marked to prevent collisions between offensive and defensive players under the basket, as defenders cannot draw charging fouls within the restricted area.
The restricted area arc was introduced to reduce the number of judgment calls referees had to make regarding block/charge calls. Before the introduction of the arc, the block/charge call was typically left to the referee's discretion. With the restricted area arc, if a defender is within the arc or has any part of their body touching the arc, they are considered to be inside it, and if there is contact, a blocking foul will be called. This rule helps to prevent unnecessary collisions and potential injuries.
The restricted area arc is especially important in the low post area of the court, which is the area closest to the basket outside of the free throw lane. Skilled low post players can score many points per game without taking jump shots, so the restricted area arc helps to prevent fouls and create more opportunities for scoring in this area.
The dimensions of the restricted area vary depending on the league or competition. In the NBA, the restricted area measures 4 feet out in every direction from the basket, while in the NCAA, it measures 3 feet out. High school basketball courts do not have a restricted area under the basket, as this rule does not exist at that level.
The restricted area arc is a relatively new addition to the basketball court, first appearing in the NBA during the 1997-98 season. It is an important rule for players, coaches, and referees to understand, as it significantly impacts strategies and gameplay near the basket.
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Rules vary between leagues
The restricted area arc is a semi-circular arc under the rim, extending 4 feet out from the centre of the basket on both sides. It was first introduced in the NBA during the 1997-98 season and has since been adopted by other leagues. Its primary purpose is to enhance player safety by limiting collisions between offensive and defensive players under the basket.
The rules regarding the restricted area vary between different leagues and competitions. For example, in the NBA, the restricted area measures 4 feet out in every direction from the basket, while in the NCAA, it measures 3 feet out. This difference in dimensions affects the strategies employed by players and coaches, as the ability to draw a defensive charge or block/charge towards a player varies depending on the size of the restricted area.
In addition, the rules regarding defending players' presence in the key also differ between leagues. In American professional basketball, defending players are prohibited from staying in the key for more than three seconds unless they are directly guarding an offensive player. However, in FIBA-sanctioned tournaments, defending team players are allowed to stay in the key without any time limit.
The restricted area arc is an important aspect of the game, and its presence can affect the strategies and tactics employed by players and coaches. Its introduction has also had an impact on the flow and pace of the game, as it creates an area where players can drive through with reduced risk of fouling, leading to faster-paced plays.
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Frequently asked questions
The arc inside the paint is called the restricted area. It is a semi-circular arc under the rim that extends 4 feet out from the center of the basket.
The restricted area was introduced to prevent collisions between offensive and defensive players under the basket, thus reducing injuries. It also helps officials with the block/charge call.
In the restricted area, a defender cannot draw a foul if contact is made with a moving offensive player. A primary defender can still draw a charge inside the restricted area, but a secondary defender will be called for a blocking foul.










































