Recently, Motus conducted and published a study that purports to debunk my observations about the Tommy John Twist.

The problem is the study is a classic example of a Straw Man.

Motus purports to study my ideas, but does so using a milestone I long ago stopped using.

As I told Motus a year ago.

Judging Timing in Baseball Pitchers

Let me go into some detail about the problem with the Motus "study" of the Tommy John Twist.

One problem is their use/reliance upon (Stride) Foot Contact as the milestone.

(S)FC is a convention that USED to make sense b/c it correlated (pretty well) with the start of Rotation.

As in hitting, and for reasons I suspect that have to do with the sequencing of muscle firing when walking/running, SFC correlates pretty/quite well with the start of rotation.

Or, it used to.

The problem is ideas like Driveline's Positive Disconnection changed everything.

While the most efficient athletes used to -- and most hitters still do -- employ a Middle-Up pattern, I'm seeing more and more pitchers who are less Middle-Up if not largely Top-Down.

What Douoguih called Early Torso Rotation.

The proliferation of Top-Down cues and movement patterns makes what the feet are doing -- and (Stride) Foot Contact -- increasingly irrelevant. When judging Timing, I abandoned looking at the feet. Which is why my pitcher predictions have gotten MUCH more accurate.

Ultimately, what matters is LOAD on the arm. Because LOAD > Stress. And while LOAD used to correlate pretty well with what the feet are doing, that's less and less true. I tried to tell the Motus folks this starting a year ago when I sensed they were studying my claims.

In sum, to say you're duplicating my work and using (Stride) Foot Contact as a/the key milestone is absurd.


I still talk about (S)FC when talking to parents because it still TENDS TO be relevant for kids, but I DO NOT use (S)FC when evaluating pros.

Because it doesn't work.

I started to realize that (Stride) Foot Contact had stopped working something like five years ago.

Which is when I moved on from it.

Now, I focus on more direct measurements of the start of Rotation and thus LOAD.

Motus knows this, because I told them, but they don't care. Which is why their latest "study" is the very definition of a Straw Man.