The All-American Girls professional Baseball League (AAGPBL) was a women’s professional baseball league which existed for twelve seasons from 1943 to 1954. The league’s franchise were all based in Midwestern United States cities. The league played softball in its first season, but rules were gradually changed over the years until the game was virtually identical to men’s baseball.
Despite the league being known in retrospect as the All-American Girls Professional Baseball League or AAGPBL, that name was only used for two seasons. The league was founded as the All-American Girls Softball League; this name lasted until 1946 when the name was changed to the All-American Girls Baseball League. In 1949 and 1950 the league was called the All-American Girls Professional Baseball League and from 1951 to1954 the league adopted the moniker of the American Girls’ Baseball League. Alternatively, it is called the All American League.