Turnover (basketball)
In basketball, a turnover occurs when a team loses possession of the ball to the opposing team before a player takes a shot at their team's basket. This can result from a player getting the ball stolen, stepping out of bounds, having a pass intercepted, committing a violation (such as double dribble, traveling, shot clock violation, three-second violation or five-second violation), or committing an offensive foul (including personal, flagrant, and technical fouls).
Turnovers can be classified into two categories: dead-ball turnovers and live-ball turnovers. Dead-ball turnovers are those which result in dead balls (e.g. rules violations) and live-ball turnovers are those which do not require play to be stopped (e.g. an intercepted pass or recovered loose ball).
According to Boston Globe sportswriter Bob Ryan, the concept of the turnover was first formulated by his colleague Jack Barry. Turnovers were first officially recorded in the American Basketball Association (ABA) during the 1967–68 season. The NBA began tracking team turnovers during the 1973-74 season and started tracking turnovers for individual players during the 1977–78 season subsequent to the NBA-ABA merger. The WNBA has recorded turnovers since its inaugural season in 1997.