What can a flat shoulder plane cause in a golfer’s swing?

A flat shoulder plane in a golfer's swing can significantly influence the dynamics of the downswing. When the shoulders are not properly aligned or if they rotate on a flat plane, it can lead to a misalignment of the swing path. This misalignment may result in the clubhead moving through an incorrect or unintended swing plane during both the transition and the actual downswing phases.

According to swing mechanics, a proper shoulder plane is crucial for achieving an efficient and effective downswing. When the shoulders are flat, it can cause the golfer to alter their body movement, often leading to compensations that disrupt the overall rhythm and timing. This mismatch between the upper body rotation and lower body motion can adversely affect the swing's consistency and control, thereby impacting the player’s ability to release the club correctly through impact.

Consequently, players may struggle with hitting the ball straight or achieving the desired trajectory, making this factor in swing mechanics particularly vital for golfers aiming to improve accuracy and efficiency in their performance.