In basketball, the action of a defensive player legally deflecting a field goal attempt from an offensive player to prevent a score
In basketball, a block or blocked shot occurs when a defensive player legally deflects a field goal attempt from an offensive player to prevent a score. The defender is not allowed to make contact with the offensive player's hand (unless the defender is also in contact with the ball) or a foul is called. In order to be legal, the block must occur while the shot is traveling upward or at its apex. ... Wikipedia