Basketball Court Boundary Lines
Basketball Out Of Bounds
Boundary Line Rules
- A player must be in bounds to touch the game ball.
- A score will not count if a player shoots a basket while standing out of bounds.
- The ball is out of bounds if it touches a player, the floor, any object, or part of the hoop that is out of bounds.
If a player is standing inbounds but holds the ball out of bounds in the air, the ball is still considered to be inbounds.
Stepping On The Boundary Lines
If a player steps on any part of the boundary lines or crosses the sidelines and baselines in any way, they are out of bounds. An inbounds pass for the other team at the spot of the infraction is the result of this turnover.
Last To Touch The Ball
What happens when the ball rolls out-of-bounds while not being held by a player? In this case, the last team to touch the ball will lose possession. This rule also applies if the ball bounces or ricochets off of a player on the court. This is the call that is hardest for referees to make in real-time, so they will often go to the monitor to review who actually touched the ball last. If it is impossible to tell, a jump ball will be used to put the ball back in play.
Backcourt ViolationAlso called an over-and-back violation, once the ball has been brought over half court by the offensive team, the half court line then becomes the out of bounds barrier. If a player is to step on the line or dribble past it, then it is considered a backcourt violation and is a turnover to the other team.
Jump Ball Circle
The only other boundary line on a basketball court is the circle surrounding a jump ball. No player who is not involved in the jump ball may cross the line until the ball has been hit.