- Amateur Baseball Umpire Association
An umpire information center. Umpire associations, umpire equipment, umpire rules; a resource center for umpires to find and share information.
- American Amateur Baseball Congress
Coordinates play among US leagues in seven age brackets, from sub-teens through adults. Includes rules, tournament dates, and list of regions and age divisions.
- American Baseball Coaches Association (ABCA)
A nonprofit organization having more than 5,000 members, including coaches from every state in the country and over 200 international members.
- American Federation of Umpires(AFU)
Group of baseball and softball umpires who share the common goal of consistent improvement in their officiating skills and knowledge of the game. Features clinics, a newsletter, and various resources.
- Major League Baseball Players Alumni Association
Organization of former players. Features information, history, and news of the organization's activities.
- The United States Amateur Baseball Association.
The USABA is here for the promotion and development of the players and fans in youth baseball pastseason tournament competitions at state, regional, and national level.
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