<Tr> <Th> Most titles </Th> <Td> Rockford Peaches (4) </Td> </Tr> <Tr> <Th> Official website </Th> <Td> aagpbl.org </Td> </Tr> <P> The All - American Girls Professional Baseball League was a women's professional baseball league founded by Philip K. Wrigley which existed from 1943 to 1954 . Over 600 women played in the league . In 1948, league attendance peaked over 900,000 spectators in attendance . The Rockford Peaches won a league - best four championships while playing in the AAGPBL . For most of the league's history, manager Bill Allington coached different teams and led the league in career wins as a manager . The 1992 motion picture A League of Their Own tells a fictionalized account of the Rockford Peaches . </P> <P> Although the title All - American Girls Professional Baseball League, or AAGPBL, is commonly used today, it was official for only two seasons . The league was founded as the All - American Girls Softball League . In 1943, 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 to 1954 the league adopted American Girls' Baseball League . </P>

When did the women's professional baseball league start