American Amateur Baseball Congress (AABC)
Homepage: http://www.aabc.us/
Rules and regulations: http://www.aabc.us

History:
AABC, now one of the largest amateur baseball organizations in the US, has come a long way since its foundation in 1935. American Amateur Baseball Congress (AABC) is the largest amateur baseball organizations in the United States for players above junior baseball age and the only amateur baseball program, which provides progressive and continuous organized competition – sub teens through adults. It is coordinated with other programs through USA Baseball and the American Baseball Coaches Association. Conducting continuous organized competition on a national level, AABC is now composed of seven different age divisions in the states, Puerto Rico and Canada. Play is also conducted in four (4) single age divisions; 9’s, 11,s, 13’s and 15’s.

The AABC has organized leagues in 42 U.S. states, even extending its coverage to Puerto Rico, Canada and Mexico. It conducts competition in seven age groups, 8 and under, 10u, 12u, 14u, 16u, 18u, and adults.