Thank you for viewing. 2024 Edition - Official Baseball Rules Edited and published by Nippon Professional Baseball Organization and All Japan Baseball Association - Player's Handbook Edited and published by All Japan Soft Baseball Federation This is a set of two books. Although used, there are no markings. I used to bring them to games to check the rules. There are some minor stains and wrinkles, but I think they are in good condition. How about these for those who will be umpires from now on? There will be almost no rule revisions for 2025, so I think they are perfectly usable. - Title: 2024 Official Baseball Rules - Language: Japanese - Published Year: 2024