The backward rotation of a golf ball in flight around a horizontal axis as caused by the club hitting the ball. The more loft on a club, the greater the backspin. Certain finishes on a club face (e.g., milling, brass-blasting) can also increase backspin.
Backspin is what naturally happens to the ball when struck successfully, especially with irons. The lower lofted irons have less backspin. In contrast, high loft clubs and wedges have the most spin and thus the ball spins back towards the player once it hits the ground. Backspin is also coveted by novices as a sign of advanced shot-making.
The clockwise rotation of the ball on its horizontal axis influenced by the loft of the clubface, the angle of approach and the clubhead velocity. (A ball struck below its center with any club that has loft, even a putter, will have backspin in the airborne portion of its flight. The greater the backspin, the steeper the ball will fly and more quickly it will stop. Opposite is top-spin.
Backward rotation on the ball, caused by drawing the racket strings down during the stroke, that results in a low bounce. On some surfaces, the ball may even bounce back toward the net. Also known as underspin. See also chip; chop.
In racquet sports, backspin (or underspin), is a shot such that the ball rotates backwards (as though rolling back towards the player) after it is hit. The trajectory of the shot involves an upward force that lifts the ball (see Magnus effect). A backspin shot is useful for defensive shots because a backspin shot takes longer to travel to the opponent, giving the defender more time to get back into position.