Golf Swing Lateral Motion: Pros vs Ams

In this video we look at the key differences in the way that pro’s and amateurs move the center of the torso and the center of the pelvis throughout the golf swing.

What we have found in our 3D research is that the classic “reverse k” set-up is not something the best players in the world employ. Also, for the professional, during the downswing, the torso remains on top of the pelvis (or even gets in front of the pelvis) until the hands reach around waist high. At this point the high level player pushes hard with the lead side which causes the pelvis to finally shift out in front of the torso.

We believe that over the years for golf instruction (for the sake of simplicity) has taken the static position of impact and tried to employ it in the swing via the reverse K set up and keeping the torso behind the pelvis during the entire motion. The problem with this is that it can cause a severe in-to-out swing direction and a reduction in ground force production as the player is not able to push as hard with his lead side late in the downswing (as it would cause him to topple over).
This has caused countless (better players especially) to struggle with hooking and pushing the ball.

Now we have all seen the chronic slicer who has benefitted from some “reverse k” feeling in their swing especially if they have the upper body well to the left of the pelvis at the top of the swing, but in this video series we are highlighting the lower handicapper amateur who is trying to take their game to the next level.

Reblogged 1 year ago from


  1. At some point you guys need to reveal "the Pro's" you are using for your data analysis to build a case for credibility. I'm not doubting that there is power dynamic that is created by stacking and using ground force out of the left foot to create power. But…this could also lead to backing up to far because over pressuring the left foot, not to mention the left knee issues. How well is that dynamic (z trace) working for Justin Thomas right now? Spray city. Discrediting axis tilt at set up and impact is a great way to screw up a ton of novice golfers who would kill to hit blocks and hooks as there miss. Again, this is important work…but step it up and get approval to mention names.

  2. Hudson backs up late and we end up in the same place. Nice try though, better luck next time!