By Charlie King
with David DeNunzio
Power Factor 1: A Flatter Approach
WHAT IT IS: The clubhead travels beneath the plane your shoulders rest on at address.
WHAT IT DOES: Stops you from making a steep, over-the-top downswing the one that usually results in a high slice or a pull.
YES! Halfway down, the butt of your driver should point at or slightly outside your target line.
• Sergio Garcia's Four Driving Secrets