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Premature hip rotation before pitch delivery causes early
arm fatigue which equates to less innings pitched per game and a short lifespan
as a starting pitcher on any level. Even though a pitcher with this major
mechanical flaw may occasionally achieve a high pitch count in a game, this
well ingrained habit of opening up early will most likely lead to a future as a
relief pitcher until there's scar tissue build up in the shoulder rotator group
which will diminish his arm strength/velocity and eventually a shortened
career.
J Lyles SP Houston Astros 2013 OIP (Overall Injury Probability): 45%
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