This is a very important article (that I missed until it was brought up in this post – boy, it's hard to keep up with everything on this site…).  It is no false claim when Brent writes that "This understanding of stride power converting to core torque through front foot strike was developed here at TopVelocity.net first."   I am very familiar with the world of pitching instruction and had been teaching pitchers to move "sooner, faster, and farther" for years before I discovered TopVelocity.  But, I know of no one who explained exactly how and why that produced more velocity.  A typical explanation went something like "long, explosive strides cause kinetic energy to shoot up the legs and into the torso and arm".  Not much science there.  Even NPA, which did the original research on hip and shoulder separation didn't explain what caused it or how to produce it. 

This is what drew me to TopVelocity and 3X.  I believe the explanations here of how velocity is created are the definitive research in the pitching world.  By studying Brent's theories, a pitcher can be analyzed like never before in discovering exactly where his potential for developing more velocity is to be found.  This is a very important web site and Brent is doing some powerful work here. 

And we never stop learning…

Brent – I've been studying hard on the paragraph about Lincecum's foot not landing on a straight line towards the target because in order for his front leg to stabilize and promote optimal hip rotation at front foot strike "his front foot must land on his center of gravity."  Can you go into more detail on that?

What exactly are you calling the center of gravity?  The conventional use of the term refers to the belly button.  And since the pitcher's belly button is never pointed at the target at landing if hip and shoulder separation is achieved, it sounds like you're saying that all pitchers would land off-line to the belly button side of their stride (as are the three pitchers shown in the article). 

What exactly does "the front foot landing on line with his center of gravity" mean?     

Good job, Z.  But, that article leaves me with the same questions Joe and I asked.

What are we calling the center of gravity?  (the second article says it's the hips)

What does it mean to land on the center of gravity?

Do different deliveries create different centers of gravity?

Is there something about Lincecum's and Bauer's stride that creates a center of gravity that requires them to stride right of center to balance their delivery?

Obviously they're pretty good anyway – but what about their stride causes them to plant their lead leg at such an angle – and is that a good thing?