when did the nba start playing zone defense
2002 the 2001–2002 season
title: Zone defense text: and one defender guards a specific player on the offense. A variant of this is triangle-and-two, in which three defenders are in a 2–1 zone and two defenders guard two specific offensive players. Zone defenses are common in international, college, and youth competition. In the National Basketball Association, zone defenses were prohibited until the 2001–2002 season, and most teams do not use them as a primary defensive strategy. The NBA has a defensive three-second violation rule, which makes it more difficult for teams to play zone, since such defenses usually position a player in the middle of the key to title: Rules of basketball text: Edwards is generally recognized as the player responsible for the 3 second rule. While the rule was originally adopted to reduce roughness in the area between big men, it is now considered to prevent tall offensive players from gaining an advantage by waiting close to the basket. When the NBA started to allow zone defense in 2001, a three-second rule for defensive players was also introduced. The shot clock was first introduced by the NBA in 1954, to increase the speed of play. Teams were then required to attempt a shot within 24 seconds of gaining possession, and the shot title: Zone defense text: stop penetration. The Dallas Mavericks under coach Rick Carlisle are an example of an NBA team that have regularly used zone defenses. Frank Lindley, Newton, KS High School basketball coach from 1914 to 1945, was among the first to use the zone defense and other innovations in the game and authored numerous books about basketball. He finished his career with a record of 594–118 and guided the Railroaders to ten state titles and seven second-place finishes. Jim Boeheim, coach of the Syracuse Orange men's basketball team, is famous for using a 2-3 zone that is among the best in the title: Man-to-man defense text: defense, those defenders are generally teammates staying close to their own assigned offensive player, and thus are often not in good position to offer help should a weaker defender be eluded by the offensive player he is trying to guard. Zone defenses were disallowed by the National Basketball Association in 1947. During this period, an illegal defense violation was called when a defender was either guarding an area instead of a specific offensive player, or was double teaming an offensive player away from the ball. A rule change in 2001 eventually permitted zone defense, but also specified that a defender title: Zone defense text: NCAA. His zone, which typically features athletic, disruptive, and aggressive defenders, has become a prototype for use on other teams including the United States men's national basketball team, where he has spent time as an assistant coach. Some of the reasons for using a zone defense are: Playing a zone entails some risks. While strategies for countering zone defenses vary and often depend on the strengths and weaknesses of both the offensive and defensive teams, there are some general principles that are typically used by offensive teams when facing a zone. Zone defense in American football refers to a type