A shot in which the cue ball is struck below its equator with sufficient draw to make it reverse direction at the moment of contact with an object ball because it is still back -spinning. When the object and cue balls are lined up square, the reversal will be directly backwards, while on a cut shot , the effect will alter the carom angle. It can also refer to any shot to which draw is applied, as in "draw it off the foot rail just to the left of the center diamond ". See illustration at spin .