NCASAUmp
Un-Retired
ASA has posted on their website how they define a "senior" bat:
Just an FYI for you fellas.
All bats used in ASA play for the Senior Divisions must be Official Softball Bats certified by the Amateur Softball Association (ASA) and / or marked BPF 1.21 or less. Bats must have their original paint markings for complete identification. These bats must still meet all other provisions of Rule 3, Section 1 and pass all bat inspections performed by the National Championship Finals Tournament Official. The Miken Ultra is not allowed (the Miken Ultra II is allowed).
Just an FYI for you fellas.