Guide — Impact Geometry

Angle of Attack

The vertical path of the clubhead at impact.

Angle of Attack (AoA) dictates how steeply the club is traveling upward or downward as it strikes the ball. It is a critical component of Dynamic Loft and Spin Loft, ultimately deciding your smash factor and trajectory.

Hitting Down vs. Hitting Up

With irons, the ball is on the ground. To ensure clean contact (ball first, then turf), the AoA must be negative (hitting down). With a driver, the ball is teed up, allowing for a positive AoA (hitting up), which drastically reduces spin and increases carry distance.

Why the Discrepancy with Driver?

You'll notice PGA Tour players average a negative AoA with the driver, while LPGA players hit up. This is entirely due to swing speed. A PGA Tour player swinging at 115+ mph generates so much ball speed and spin that they can afford to hit slightly down on it to maximize control. An LPGA player swinging at 95 mph must hit up on the ball to launch it high with low spin to maximize carry distance.

Unless you swing a driver over 110 mph, you should be trying to hit up on it.

The Spin Loft Connection

A steeper (more negative) AoA increases Spin Loft, which creates more backspin and a lower Smash Factor. If you hit a 7-iron with an AoA of -10°, you are delivering a glancing blow. The ball will spin excessively and fall short of the target.