Spin Axis (Tee to Green)

• Definition
  • The angle relative to the horizon of the imaginary line that the golf ball rotates around and is measured after separation from the club face.
  • That is, Spin Axis represents the amount of curvature of a golf shot.
  • A negative Spin Axis represents a ball curving to the left, a positive Spin Axis represents a ball curving to the right (right-handed player), and a zero Spin Axis represents a shot that has no curvature.
• The Use of Spin Axis
  • As Spin Axis represents the curvature of the shot, it can be used to work on shot shaping. In general, a Spin Axis between -2 and 2 deg can be considered a straight shot, as it would be difficult to see much curvature on such a shot under normal conditions.
  • It is important to understand that Spin Axis is measured at impact and remains the same throughout the flight of the ball.
  • Even though the wind may push the ball in different directions, the Spin Axis will remain unchanged.
  • Therefore, it is possible to have a shot with negative Spin Axis that goes to the right, if the effect of the wind is stronger than the Spin Axis curvature on the shot.