Baseball in Japan
Japan's Standardized Baseballs Are Popular With Pitchers - The New York Times
Japan baseball history
Nippon Professional Baseball Organization
Japanese High School Pitcher Shohei Otani opts for MLB over Japan Professional Baseball - World Baseball Softball Confederation
A Beginners Japan Baseball Guide
Best Japanese Baseball Players Of All Time
Japan's Two-Way Baseball Superstar Wants to Play in MLB in 2018
Japanese Independent Baseball Tryouts Coming to the US