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- 1872: Introduction of baseball to Japan
- 1908: First baseball game played against Major League Teams
- 1934: Greater Japan Tokyo Baseball Club (present: Yomiuri Giants) established
- 1935: Osaka Baseball Club (present: Hanshin Tigers) established
- 1936: Japanese Baseball League Established
- 1950: Nippon Professional Baseball (NPB) Established
- 1993: Hideo Nomo’s departure to America
- September 18, 2004: NPB Player’s Strike
- 2004: Kintetsu Buffaloes dissolution