Time line (basketball)

Last updated November 14, 2021

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.

History

The rule was introduced in 1933. It was basketball's first time restriction on possession of the ball, predating the shot clock by over two decades. FIBA and the NBA specified 10 seconds, but adopted an 8-second limit in 2000 and 2001, respectively.

In college basketball, the interval remains 10 seconds.

Procedure

The time limit is marked off by an official waving his arm to visibly count, if there is no shot clock available or the shot clock is turned off. However, women's college basketball introduced the 10-second limit in 2013–14, and provided that officials will not count the ten seconds but "will use the shot clock to determine if a 10-second violation has occurred." The referee calls a violation if the offense still has the ball in the backcourt when the shot clock has counted down from 30 to 20 and now shows 19 (which first occurs at 19.9 seconds left).^[1] Men's college basketball has had the same rule since 2015-16, when the shot clock changed from 35 seconds to 30 seconds. In the NBA and FIBA, the shot clock marks off the 8-second count.

Analogs in other sports

In field lacrosse, a team has 20 seconds to get the ball across the midfield line any way it can, and then 10 seconds to get the ball into its opponents' goal box. To satisfy the latter limit it is not necessary that a player in possession of the ball enter the box; although that is the most common way of doing so, that count is ended if the ball simply touches the ground inside the box. Officials typically use a timer for the 20-second count, as they may also at the same time be counting the four seconds a defensive player is allowed to stay in the goal crease with the ball, and count off the ten seconds manually.

Related Research Articles

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References

↑ Johnson, Greg (November 5, 2013). "Women's basketball puts 10-second backcourt rule in effect for first time". NCAA. Retrieved January 18, 2014.

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[1] Johnson, Greg (November 5, 2013). "Women's basketball puts 10-second backcourt rule in effect for first time". NCAA. Retrieved January 18, 2014.

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