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. 2013 May;5(3):239–243. doi: 10.1177/1941738113480341

Table 1.

Comparison between pitch limit recommendations for 12-year-old baseball players in the United States and Japan (excerpts from each recommendation)8,12

USA Baseball Medical and Safety Advisory Committee Guidelines Japanese Society of Clinical Sports Medicine Recommendations
Year recommended 2006 1995
Pitch counts
 Per day 75 50
 Per week 100 200
 Per season 1000
 Per year 3000
Practice
 Days per week 3
 Hours per day 2
Pitch type Avoid breaking pitches (Prohibited)
Multiple league Discouraged
Year-round baseball Discouraged