The three seconds rule (also referred to as the three-second rule or three in the key, often termed as lane violation) requires that in basketball, a player shall not remain in their team's foul lane for more than three consecutive seconds while that player's team is in control of a live ball in the frontcourt and the game clock is running. The countdown starts when one foot enters the paint and resets when both feet leave the area. 
The three-second rule was introduced in 1990 and was expressed as such: no offensive player, with or without the ball, could remain in the key, for three seconds or more. Other sources indicate that the three-second rule was introduced in 1936 in an attempt to restrict the dominance of Leroy Edwards of the Oshkosh All-Stars, a team in Wisconsin that played in the National Basketball League (NBL) - forerunner to the National Basketball Association (NBA).
Within the FIBA rules, an allowance is made for players who either receive the ball prior to being within the key for 3 seconds, or for those players who are leaving (or attempting to leave) the keyway. 
Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop. A field goal is worth two points, unless made from behind the three-point line, when it is worth three. After a foul, timed play stops and the player fouled or designated to shoot a technical foul is given one, two or three one-point free throws. The team with the most points at the end of the game wins, but if regulation play expires with the score tied, an additional period of play (overtime) is mandated.
In basketball, the basketball court is the playing surface, consisting of a rectangular floor, with baskets at each end. Indoor basketball courts are almost always made of polished wood, usually maple, with 3.048 meters (10 ft)-high rims on each basket. Outdoor surfaces are generally made from standard paving materials such as concrete or asphalt. International competitions may use glass basketball courts.
In basketball, a technical foul is any infraction of the rules penalized as a foul which does not involve physical contact during the course of play between opposing players on the court, or is a foul by a non-player. The most common technical foul is for unsportsmanlike conduct. Technical fouls can be assessed against players, bench personnel, the entire team, or even the crowd. These fouls, and their penalties, are more serious than a personal foul, but not necessarily as serious as a flagrant foul.
A shot clock is a countdown timer used in a variety of games and sports, proving a set amount of time that a team may possess the object of play before attempting to score a goal. Shot clocks are used in several sports including basketball, water polo, lacrosse, poker, ringette, korfball, tennis, ten-pin bowling, and various cue sports. It is analogous with the play clock used in American and Canadian football, and the pitch clock used in baseball. This article deals chiefly with the shot clock used in basketball.
In basketball, free throws or foul shots are unopposed attempts to score points by shooting from behind the free-throw line, a line situated at the end of the restricted area. Free throws are generally awarded after a foul on the shooter by the opposing team, analogous to penalty shots in other team sports. Free throws are also awarded in other situations, including technical fouls, and when the fouling team has entered the bonus/penalty situation. Also, depending on the situation, a player may be awarded between one and three free throws. Each successful free throw is worth one point.
In basketball, a personal foul is a breach of the rules that concerns illegal personal contact with an opponent. It is the most common type of foul in basketball. A player fouls out on reaching a limit on personal fouls for the game and is disqualified from participation in the remainder of the game.
The rules of basketball are the rules and regulations that govern the play, officiating, equipment and procedures of basketball. While many of the basic rules are uniform throughout the world, variations do exist. Most leagues or governing bodies in North America, the most important of which are the National Basketball Association and NCAA, formulate their own rules. In addition, the Technical Commission of the International Basketball Federation (FIBA) determines rules for international play; most leagues outside North America use the complete FIBA ruleset.
In basketball, traveling is a violation that occurs when a player takes too many steps without dribbling the ball. Traveling is also called, predominantly in a streetball game, "walking" or "steps". If the pivot foot is lifted, a pass or try for made basket must be made before the pivot foot is replaced to the floor. In the NBA and FIBA, players are also given a "gather step".
In basketball, a flagrant foul is a personal foul that involves excessive or violent contact that could injure the fouled player. A flagrant foul may be unintentional or purposeful; the latter type is also called an "intentional foul" in the National Basketball Association (NBA). However, not all intentional fouls are flagrant fouls, as it is an accepted strategy to intentionally commit a foul in order to regain possession of the ball while minimizing how much time elapses on the game clock.
This glossary of basketball terms is a list of definitions of terms used in the game of basketball. Like any other major sport, basketball features its own extensive vocabulary of unique words and phrases used by players, coaches, sports journalists, commentators, and fans.
In basketball, a foul is an infraction of the rules more serious than a violation. Most fouls occur as a result of illegal personal contact with an opponent and/or unsportsmanlike behavior. Fouls can result in one or more of the following penalties:
A defensive three-second violation, also known as illegal defense, is a basketball rules infraction in the National Basketball Association (NBA). It is assessed when a member of the defending team spends more than three seconds in the free throw lane while not actively guarding an opponent. To be considered actively guarding an opponent, a defender must be within arm's length of an opponent and must be in a guarding position. A violation will not be called if an offensive player is in the act of shooting, if the offensive team loses control of the ball, if it is imminent that the defender's position will become legal, or if the defender is guarding a player who has possession of the ball.
The Trent Tucker Rule is a basketball rule that disallows any regular shot to be taken on the court if the ball is put into play with under 0.3 seconds left in game or shot clock. The rule was adopted in the 1990–91 NBA season and named after New York Knicks player Trent Tucker, and officially adopted in FIBA play starting in 2010. When the WNBA was established in 1997, this rule was adopted too.
In basketball, the five-second rule, or five-second violation, is a rule that helps promote continuous play. There are multiple situations where a five-second violation may occur.
Delay of game is an action in a sports game in which a player or team deliberately stalls the game, usually with the intention of using the delay to its advantage. In some sports, the delay of game is considered an infraction if it is longer than that permitted according to the game's rules, in which case a penalty can be issued. Some sports that have a delay of game penalty are American football, Canadian football, ice hockey and association football.
The key, officially referred to as the free throw lane by the National Basketball Association (NBA), the National Collegiate Athletic Association (NCAA), the National Association of Intercollegiate Athletics (NAIA), and the National Federation of State High School Associations (NFHS), and the restricted area by the International Basketball Federation (FIBA) is a marked area on a basketball court surrounding the basket, where much of the game's action takes place.
Basketball is a ball game and team sport in which two teams of five players try to score points by throwing or "shooting" a ball through the top of a basketball hoop while following a set of rules. Since being developed by James Naismith as a non-contact game that almost anyone can play, basketball has undergone many different rule variations, eventually evolving into the NBA-style game known today. Basketball is one of the most popular and widely viewed sports in the world.
3×3 basketball is a variation of basketball played three-a-side, with one backboard and in a half-court setup. According to an ESSEC Business School study commissioned by the International Olympic Committee, 3x3 is the largest urban team sport in the world. This basketball game format is currently being promoted and structured by FIBA, the sport's governing body. Its primary competition is an annual FIBA 3X3 World Tour, comprising a series of Masters and one Final tournament, and awarding six-figure prize money in US dollars. The FIBA 3x3 World Cups for men and women are the highest tournaments for national 3x3 teams. The 3x3 format has been adopted for both the 2020 Summer Olympics and 2022 Commonwealth Games.
The 1972 Olympic men's basketball final was the last game of that year’s Olympic basketball tournament, and became one of the most controversial events in Olympic history. With the ending mired in controversy, the Soviet Union defeated Team USA by one point, marking the latter's first ever loss in the event. Both the U.S. and the Soviet Union won their first eight games of the tournament, with the US team having its overall Olympic record at 63–0 when they advanced to the final against the USSR. The final three seconds of the game were replayed three times until the Soviet team came out on top because of possible political corruption as the Cold War was ongoing at the time. The result of the game is disputed to this day. The majority of judges were also Russian. The United States team had won the previous seven gold medals at the Olympics, and was among the contenders to win another in Munich at the 1972 Summer Olympics.
The time line, in basketball, is a name for the center line that reflects the rule that the offensive team has a limited amount of time to advance the ball past this line, from the backcourt to the frontcourt, in a scoring drive.