Pepper-grinder move unwelcome in Japan high school tourney
Koshien: Japan's Field of Dreams
Young Japanese Baseball Players Take Home Special Prize: Dirt
Canceling Summer Koshien right, but tough, decision - The Japan Times
Pitcher Roki Sasaki next 'big thing' from Japanese baseball
Hideki Matsui elected to Japanese Baseball Hall of Fame - The Japan Times
A few fun trivia of Ohtani, Darvish, and other Japanese players in their high school days. : r/baseball
FILE: Hideki Matsui at National High School Baseball Championship Tournament
Hideki Matsui (Seiryo), AUGUST 16, 1992 - Baseball : 74th National High School Baseball Championship Tournament second round
MATSUI Yuki|Profile|The Official Site of the Japan National Baseball Team
FILE: Hideki Matsui at National High School Baseball Championship Tournament