Age Eligibility The Massabesic Little League defines “League Age” as per Little League International rules. Little League defines “League Age” differently for Baseball and Softball. Instead of trying to break it down for you, we recommend that you visit this page to see your child's age eligibility per Little League International. Note: Enrolling Tee Ball players must be “League Age” 4. That is, they must turn the age of 4 by 8/31/2021 to register. Experience level may also determine team placement. Info: Baseball Division Descriptions | Season Events | Field Locations | Glove & Bat Guidelines | Age Eligibility | Fundraising | Forms