Steve Sigler of Long Island, New York, founded the National MSBL in 1986.
Calvin Ryland and Gary Self originally organized the MSBL of Southern Colorado in 1992. The League began with four teams and has continually expanded in size, reputation and community involvement. It enlisted several league and team sponsors, and initiated promotional relations with local TV, radio, newspapers, and businesses.
The MABL was formed in 1996 to provide the baseball opportunity to players ages 18 and over. The official name of the league then became the MSBL/MABL of Southern Colorado.
The Leagues have sent teams to the National MSBL and MABL World Series Tournaments in Phoenix, AZ. A key to the Leagues' success was the formation of a structured League Committee, which administers the management functions and sustained the Leagues' philosophy and goals.