Manchester Athletic Association 750 Russell Wirth Ln, Manchester, MO63011 Manchester Athletic Association is a private, non-profit organization serving residents of the community with sports…More leagues and programs. The association oversees numerous sports teams, tournaments and adult programs, including both Boy’s Youth Baseball and Girl’s Youth Softball for children 5 to 18 years of age. The association runs programs through the spring and summer months, as well as a fall program that runs from August through October. The association hold numerous tournaments and clinics during the sports season. It directly supports more than 100 teams with more than 1,500 participants. Check the main site for details on tournaments or for information on leagues or teams.