The problem isn’t with the angle of his foot as he strides. Instead, the problem is with where his foot lands.
In most cases, their Glove Side foot should land pretty much on this line with their toe pointed at the target.
And exceptional pitchers are NOT “most cases”…
In the video I saw, the pitcher’s GS foot was landing significantly to the 1B side of this line.
And exactly how does this compromise this players throwing the ball?? As I said previously there are a many players who land quite open. And some extremely open and yet a very successful. Where the players foot lands is of secondary importance as compared to what the hips ( Pelvic region) is actually doing which includes movement of the center of the body’s mass, hips versus shoulder differential with respect to time, arm action, etc., etc., etc…
Here’s a clip of Nolan Ryan.
Where does his front foot land with respect to a line drawn from his posting foot to home plate? “I see” Ryan’s front foot landing quite far to the 1st base side of that line.
And please do not play the “injury card”. Neither you or anyone else has the ability to predict with any type of certainty who will will not sustain an arm injury.
The problem that "I"have with your (and others who do the same thing) is that you have little or no understanding of how the body actually works to optimally throw the ball. All I see is the repeating the pitching belief system of your your favorite pitching guru along with whatever pictures you can find to support your opinion.
When it comes to the human body Especially those actions producing ballistic type of movements, it is impossible to know exactly what all the muscles and connective tissue are doing other than to “infer” from what you “think” you “see”.
The delivery must be taken as an entire package. attempting to break it down into its component parts without taking into account the whole is an exercise in futility.
And If nothing else I can guarantee you know two pitching gurus see the same thing.
Every player at the major-league level got there because they just went out and “did it”. And for 98% of the players, no “pitching instruction” is better than any instruction, especially pitching instruction given on a forum well-meaning but woefully lacking in understanding of what it takes to really produce a high-level player.
You and everyone else who states with such assuredness what amounts nothing more than someone else’s opinions packaged to fit your particular beliefs, i.e. what you think you see, are in my opinion dangerous and potentially very destructive to the unknowing and unsuspecting parent and or player.