BSAA Bat Rules
1. All non-wood bats in 12u and under in both softball and baseball must have the USABat Marking. Barrell Maximum - 2 5/8.
2. In 13+ baseball players are allowed to use USA bats with no greater drop than -8 OR must be marked BBCOR .50. Bat barrels may not exceed 2 5/8 inches in diameter.
Here are examples of the USABat Marking: