Why is the lie angle significant in golf club fitting?

The lie angle is significant in golf club fitting because it directly influences the direction and accuracy of the shot. The lie angle refers to the angle between the center of the shaft and the ground when the club is at rest. If the lie angle is not suited to a golfer's height or posture, it can lead to improper contact with the ball.

When the lie angle is correct, the sole of the club rests flat on the ground at impact, allowing for a straighter trajectory and more consistent strikes. Conversely, if the lie angle is too upright or too flat, it can cause the clubface to point left or right at impact, leading to errant shots. This makes it a critical parameter in achieving optimal performance on the course, directly impacting a player's ability to control their shots effectively.

Consideration of the other options shows they are not as closely tied to the lie angle's primary function. For instance, ball speed is more influenced by the club's loft and the golfer's swing speed rather than the lie angle itself. While swing path and grip pressure can affect performance, they are determined by different aspects of club fitting and swing mechanics, rather than a direct correlation with the lie angle.