There are three bat performance standards that Little League International uses for its various divisions of play:
BASEBALL:
USABat: Overseen by USA Baseball and used by most youth baseball organizations, USABat Standard bats must be used at the Little League Baseball® Tee Ball, Coach/Machine Pitch, Minor League, and Major League (Little League) divisions. USABat Standard or BBCOR bats must be used at the Little League Intermediate (50/70) Baseball Division and Junior League Baseball Division. USA Baseball reserves the right to select any USABat product for compliance testing. At that time, the bat is sent to Washington State University for additional testing. If the bat is found to be out of compliance with the standards set forth in the USA Baseball Performance Test Protocol, the bat becomes decertified.
BBCOR: BBCOR-approved bats must be used in the Senior League Baseball Division. Either BBCOR or USABat Standard bats must be used at the Little League Intermediate (50/70) Baseball Division and Junior League Baseball Division.
SOFTBALL:
BPF: For all divisions of Little League Softball®, all non-wood bats must be printed with a BPF of 1.20.