Timeline
- 1915.08 National Secondary School Baseball Championship first held (organized by the Osaka Asahi Shimbun)
- 1924.04 National Secondary School Baseball Invitational Tournament first held (organized by the Osaka Mainichi Shimbun)
- 1924.08 Koshien Stadium completed and becomes host to both tournaments
- 1946.02 All-Japan Secondary School Baseball Federation founded
- 1946.12 Japan Students Baseball Association becomes the parent organization
- 1947.04 In accordance with the school system reform the name changes to the All-Japan High School Baseball Federation
- 1956.08 National High School Soft-baseball Tournament first held
- 1963.02 Accompanying the privatization, the name becomes the Japan High School Baseball Federation
- 1978.08 National High School Soft-baseball Tournament renamed to the Japan High School Soft-baseball Championship
Read more about this topic: Japan High School Baseball Federation