As Justin mentions, keeping tension and restricting the back leg until the last second is a technique used in current velocity training.
The issue is, this lack of movement leads to further restriction later on in the throwing sequence. An example of this is a late arm action.
Starting Pitchers in @TheMLBPlayoffs
-47% of all starting pitchers are in the high risk category, 14% are in the low risk category.
-12% of pitchers are on time at foot-strike
- Best = Verlander, Kershaw, Urias
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