Goaltending (basketball)

Goaltending is a violation of the rules in the sport of basketball. It consists of certain forms of player interference with the ball while it is on its way to the basket. It is goaltending if a player touches the ball when it is:(a) in downward flight;
(b) above the basket rim and within an imaginary cylinder projecting above the rim;
(c) already touching the rim; or
(d) after it has touched the backboard and has a chance of going in the hoop.