Shot Clock

A shot clock is used in some sports to quicken the pace of the game. It is normally associated with basketball, but is also used in snooker, pro lacrosse, water polo, and korfball.

In basketball, the shot clock is a timer designed to increase the game's pace (and score). The offensive team must attempt a field goal (defined as the ball leaving the player's hand and either touching the rim or entering the basket) before the shot clock expires. If the offensive team fails to register a field goal attempt within the time limit, they are assessed a violation resulting in a turnover to their opponents; if the ball hits or enters the rim after the clock expires, it is not a violation so long as it left the player's hand before expiration.