Asa 10u Softball Rules 2025. The american softball association (asa) stipulates that pitchers in fastpitch softball leagues for children aged ten and under, known as 10u, must launch the ball from a distance. The home team will be the.
Most associations have state borders, but some metros, indicated in red, are their own association. See bottom for modified 8u and 10u rules.** age cut off date will remain december 31st.