Anthropometric and body composition measurements were conducted on high school hardball players. Differences in adiposity in the whole body and in specific regions were found between pitchers and outfielders, indicating that the physiques of male high school baseball players may differ by grade and position. (Masaharu, K., Yuha, T., Chieko, U., Ryutaro, Y., Kanna, Y., Mariko, I., Daigo, T.)