Starting January 1, 2018, Little League Baseball implemented the new USA Baseball Bat Standard. Little League-approved baseball bats that were approved for use in 2017 were no longer be suitable for use in any Little League game or activity starting January 1, 2018.
Note: The new USABat standard does NOT apply to Softball. There is no list of approved softball bats. In softball, the bat only needs to meet the specifications of Rule 1.10 for a softball bat.
Rule 1.10 β Softball
The bat must be a softball bat which meets Little League specifications and standards as noted in this rule. It shall be a smooth, rounded stick and made of wood or a material tested and proved acceptable to Little League standards. The bat shall be no more than 33 inches (34 inches for Junior/Senior League) in length, not more than two and one-quarter (2ΒΌ) inches in diameter, and if wood, not less than fifteen-sixteenth (15/16) inches in diameter (7/8 inch for bats less than 30 inches) at its smallest part. Non-wood bats shall be printed with a BPF (bat performance factor) of 1.20. Bats may be taped or fitted with a sleeve for a distance not exceeding 16 inches from the small end. Colored bats are acceptable. A non-wood bat must have a grip of cork, tape or composition material, and must extend a minimum of 10 inches from the small end. Slippery tape or similar material is prohibited.
An illegal or altered bat must be removed.