Date of Birth: 
About Katsuhiko Kumazaki
- Katsuhiko Kumazaki (?? ??, Kumazaki Katsuhiko, born January 24, 1942) is the commissioner for the Nippon Professional Baseball league.
- He has served as the Commissioner of Baseball (NPB) since 2014.
- He has handed out punishments for many reasons including gambling.
- He has been key in the return of baseball to the 2020 Olympics.
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