A recent study found that high school pitch count mandates alone have not reduced shoulder and elbow injuries, largely because most injuries occur during practices and other throwing that isn't tracked by game pitch counts. However, two specific rules—requiring rest between consecutive pitching days and limiting pitchers to 105 pitches or fewer per day—were strongly associated with lower injury rates but have not been widely adopted. The takeaway is that protecting pitchers requires monitoring total throwing workload year-round, not just pitches thrown during high school games.
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