A regulation in professional basketball restricts a defensive player from remaining in the free-throw lane for more than three consecutive seconds while not actively guarding an opponent. Specifically, this rule applies when the defender is within the 16-foot painted area (the lane) and closer than six feet to the basket, and not guarding an opponent. Violation results in a penalty, awarding the opposing team a free throw and possession of the ball.
This stipulation is designed to prevent “zone” defenses in the paint, encouraging a more open and dynamic offensive game. Prior to its implementation, teams could effectively clog the lane, making scoring more difficult. The rule promotes player movement, spacing, and individual offensive skills, contributing to a more entertaining and fluid game for spectators. Its introduction significantly impacted strategic approaches to both offense and defense.