Trail Leg Wins: What Force Plate Data Reveals About Elite Short Games

If a student struggles with contact around the greens, there's a chance the problem isn't their hands or their ball position. It's the direction their body is moving through impact.

In our biomechanics lab, force plates give us a window into how elite players actually interact with the ground. We share this data in our advanced Golf seminars, and it's striking how different elite patterns look in the full swing versus the short game.

Around the greens, the data tells a very clear story: the best chippers in the world are moving toward the target, while high-handicappers tend to stall or even fall away from it.

The Lead Leg Wins in the Full Swing

To appreciate what makes finesse wedge play different, it helps to understand what happens in a full swing.

When players create power, they make a big lateral push toward the target.  This weight shift is key for creating ground reaction forces.  Think of a baseball pitcher striding down the mound. Think of a baseball pitcher striding down the mound. Throwing and swinging are both rotational movements, so athletes must convert that lateral motion into rotation by slamming on the brakes with the lead leg.

On average, our tour players push about 20% of their body weight with the trail leg, and then the lead leg counters with roughly -29% of body weight. That means the lead leg brakes about 145% harder than the trail leg pushes. The lead side wins. That braking action is what converts a lateral weight shift into rotational speed.

In the Short Game, the Trail Leg Wins

Now look at a finesse chip: no power, around the green, inside about 30 yards. The pattern flips.

There's still a weight shift toward the target, but it's much smaller: about 7% of body weight from the trail leg. And when the brakes kick in, the lead leg only counters with about 5%. Instead of braking at 145% of the push like a full swing, elite chippers brake at roughly 85% of it.

In other words, the brake is never big enough to stop the motion. The trail leg wins, and the player's center of mass keeps fractionally moving toward the target all the way through the strike. Elite players still rotate in the short game, but their pelvis never stops moving forward.

Why Reverse Pivoting Kills Chipping

This is where amateurs can get in trouble. When a golfer hangs back or falls away from the target (a reverse pivot), the low point of the swing drifts behind the ball, promoting fat and thin contact.

Our rule of thumb isn’t complicated, but is non-negotiable for players we work with: the lower body must keep moving toward the target. The best short games in the world share three directional traits through the shot:

• Forward: the pelvis and center of mass move toward the target

• Back: the pelvis works away from the target line, not out toward the ball

• Up: on the downswing, the lower body stays tall; elite players never let it sink or collapse downward

Forward, back, and up. If a golfer's body is doing those three things, the low point stays in front of the ball and crisp contact gets a whole lot easier.

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Understanding how elite players use the ground differently across shot types, and how to turn force plate data into real coaching and training decisions, is a core focus of our Golf Level 3 and even our Power Level 3 courses. If you want to take your understanding of ground reaction forces to the next level, check out our upcoming Level 3 seminars.