Hi, I can’t tell by the email trail if you are responding to my last post, but I’ll add my 2 cents.
I previously stated that the stride length was a red herring. Which means, if your son naturally has one, so be it. It is, in and of itself, neither good or bad. It must be taken in context with everything else. To strive for a stride length in and of itself, in my opinion, is searching for fools gold.
What I see is a maturation of his delivery. It appears to me that his stride length is less, but his motion is much more concise, quicker, and probably more explosive. he STILL gets great upper body rotation and finishes from top to down. And he continues to have great momentum through the pitching motion towards the plate.
Perhaps by cutting down on the lower half opening too much/too son, the stride length naturally shortened…as a result, more natural/delivery power continues toward the plate because the lower half and the upper half are working better together in proper sequence.
He seems to have natural sinker fading in to righties. That’s top stuff. No doubt he is spinning the ball better on release with that action.
perhaps it’s time to play with grips in order to get ball movement without having to resort to junk ball pitches. And try to throw balls off the plate that come back into the zone.
You should be very happy! Hope I have helped.