Kristian Ferrell
Basketball is a sport that has undergone many changes since its inception. The rules of the game are constantly being reviewed and changed to ensure the game remains exciting and enjoyable for fans to watch. Some of the most notable rule changes include the introduction of dribbling in 1897, the addition of a backboard in 1895, and the adoption of the three-second rule in 1936. More recently, in the 2025-26 season, there were six changes to high school basketball rules, including revisions to rules regarding goaltending and basket interference. The rules encompassing equipment, teams, players, coaches, playing regulations, violations, fouls, and officials are constantly evolving, with the latest international rules of basketball approved by FIBA in 2014.
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What You'll Learn
Changes to shot clock rules
The shot clock is a timing device that displays a countdown of the time within which a team in possession of the ball must attempt a field goal. The shot clock was introduced in the 1950s to speed up the game and reduce fouls.
The NBA adopted a 24-second shot clock for the 1954-55 season, which was calculated by dividing the total number of seconds in a 48-minute game (2880 seconds) by the number of shots taken by each team in a typical game (around 60). This was influenced by a low-scoring game in 1950, where the Fort Wayne Pistons defeated the Minneapolis Lakers 19-18, with the Pistons holding the ball for long periods without shooting to limit the impact of the Lakers' star player, George Mikan.
The shot clock has not always been set at 24 seconds. FIBA, for example, adopted a 30-second shot clock in 1956, which was reduced to 24 seconds in 2000. The NCAA men's shot clock was 45 seconds in 1985, reduced to 35 seconds in 1993, and further reduced to 30 seconds in 2015. Women's basketball adopted a 30-second shot clock in 1971.
The shot clock starts when a team gains possession of the ball, either by inbounding it or obtaining possession following a jump ball or missed free throw. If there are 24 seconds or less left in the period, the shot clock does not function following a change of possession, but it is reactivated and reset to 14 seconds if certain situations occur, such as a personal foul by the defense. The shot clock is also reset if the ball touches the basket's rim or backboard, or if the opponents gain possession.
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Substitutions
The modern game of basketball allows for an unlimited number of substitutions. However, there are clear and specific procedures that all substitutes must follow.
A substitute player can enter the court to replace another teammate at any time, except during an official's suspension of play. The player must first wait at the scorer's table before entering the court. The official game scorer will then beckon to the substitute to grant permission, and the scoreboard operator will notify the officials by blowing the horn on the clock. The substitute shall remain outside the boundary until an official beckons, at which point they enter immediately.
During multiple free throws resulting from personal fouls, substitutions may only be made before the final attempt in the sequence and after the final attempt has been scored. A substitute cannot replace a free throw shooter or a player involved in a jump ball unless dictated by injury or ejection.
In the case of a seriously injured player, the player must be removed, and the opposing team is permitted one substitution. A substitute shall not be allowed to re-enter the game after being disqualified.
At the beginning of the game, each team must supply the official scorer with the name and number of each team member and designate the five starting players.
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Fouls and disqualifications
Fouls and penalties are an integral part of basketball, and the rules continue to evolve to ensure fair play and an exciting game for fans and players. The rules surrounding fouls and disqualifications have been adapted over the years to maintain the balance between exciting, fast-paced play and fair competition.
The number of fouls a player can commit before disqualification has changed over the years. Originally, the limit was not specified, but it was changed to four fouls in 1911 and five in 1945. This remains the case for most forms of basketball with a standard 40-minute game length. However, in competitions with a 48-minute game length, such as the National Basketball Association (NBA) in the US and Canada, a player is disqualified on their sixth foul.
When it comes to specific fouls, the rules outline various scenarios and their consequences. For instance, if a defender establishes a legal position in the straight-line path of a dribbler, the dribbler must avoid contact by changing direction or ending their dribble. If illegal contact occurs, the dribbler is responsible and penalised with an offensive foul. On the other hand, if the dribbler has sufficient space to have their head and shoulders in advance of the defender, the defender is responsible for any illegal contact and is penalised with a personal foul.
The rules also address situations involving the ball going out of bounds or interfering with a shot attempt. For example, a team has five seconds to inbound the ball, and if they fail to release it within this time, it results in a turnover. Additionally, any player, coach, or trainer interfering with a ball that has crossed the boundary line is penalised. If it is the first offence, a warning is given, but subsequent offences result in a technical foul.
Furthermore, the rules have been refined to clarify goaltending and basket interference calls. Rules 4-22-1 and 4-22-2 were amended to specify that only a defensive player can commit goaltending, eliminating the concept of offensive goaltending. Additionally, Rule 4-22-3 was introduced to define a ball's downward flight during a legitimate shot attempt, providing a clear standard for goaltending calls.
Disqualifications in basketball typically refer to players being taken out of the game due to committing too many fouls, rather than being ejected from the playing area. This distinction is important, as players are not supposed to leave the confines of the gym unless accompanied by an authorised adult. Ejections are usually reserved for coaches or other adults, who must leave the gym if they receive two technical fouls.
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Possession rules
The possession rules in basketball concern the rules around gaining control of the ball and maintaining possession during play. Here are the key possession rules and how they have changed:
The most fundamental possession rule in basketball is that a team must have possession of the ball to attempt a field goal or score. This means that a player from the offensive team must have control of the ball, usually by dribbling it or receiving a pass, before attempting to shoot or score.
The rules regarding gaining possession through rebounds and steals have remained largely consistent. A rebound occurs when a player gains possession of the ball after a missed field goal attempt. Players can legally gain possession through rebounds by being the first to secure control of the ball, either by grabbing it directly off the rim or by catching it after it has clearly touched the rim or backboard. Steals, which involve taking possession of the ball from an opponent during their dribble or pass, are also still a valid way to gain possession.
One significant change to possession rules in recent years involves the concept of "possession arrow" in jump ball situations. In the past, jump balls were used to determine possession at the start of the game and overtime periods, as well as in certain other situations. The possession arrow rule eliminates the need for jump balls during overtime periods and in situations where possession cannot be clearly determined. The possession arrow is pointed toward one team, giving them automatic possession in the next jump ball situation. The arrow alternates between teams throughout the game.
Another important aspect of possession rules is the backcourt violation. Once the ball has been advanced across the midcourt line by the offensive team, it cannot be brought back across by that team. If a player on the offensive team is the last to touch the ball before it goes back across the midcourt line, it results in a backcourt violation and the ball is awarded to the opposing team. This rule encourages offensive progress and faster-paced gameplay.
The rules regarding possession and the duration of a player's dribble have also undergone changes. A player must dribble the ball within a certain amount of time after gaining possession. This is to prevent players from holding onto the ball indefinitely, stalling the game. The rules now specify a maximum dribbling time limit to encourage faster and more dynamic gameplay.
In summary, the possession rules in basketball govern how teams gain and maintain control of the ball during gameplay. While some aspects of these rules have remained consistent, such as rebounds and steals, other areas have seen changes to promote faster-paced and dynamic play, improve flow, and make the game more engaging for players and spectators alike.
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Goaltending and basket interference
The NFHS Basketball Rules Committee has introduced a trio of changes to address when goaltending and basket interference are called for the 2025-26 season. These changes were recommended during its April 28-30 meeting in Indianapolis and were subsequently approved by the NFHS Board of Directors.
Goaltending
According to the new Rule 4-22-3, a ball is considered to be on its downward flight once it contacts the backboard on a legitimate shot attempt. Therefore, it is considered goaltending if a defensive player touches the ball after it contacts the backboard. Before this change, officials would determine if a shot attempt was still ascending and out of the cylinder before goaltending could be called. This change introduces a clear and objective standard for calling goaltending.
Basket Interference
Rules 4-22-1 and 4-22-2 were amended to specify that only defensive players can commit goaltending, eliminating the possibility of offensive goaltending violations. This amendment removes the need to determine whether a ball in flight is a field-goal attempt or a pass. Any alteration of a shot attempt by an offensive player that involves contact with the basket or backboard is now considered basket interference. Additionally, the act of intentionally slapping or striking the backboard during a shot attempt will result in basket interference instead of a technical foul. These changes aim to standardize officiating and remove intent from the decision-making process.
Throw-in Violations
Another significant change for the 2025-26 season addresses throw-in violations. If a violation occurs on or within the three-point line, the designated spot for the throw-in will be on the end line. If the violation occurs outside the three-point line, the throw-in will take place on the sideline. This rule eliminates the use of an imaginary line to determine the throw-in spot, providing a more precise and consistent approach to administering violations.
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