USA Bat Standard

Effective January 1, 2018

UpdatedSaturday February 23, 2019 byNashua Cal Ripken.

New Youth USA Bat Standard

On January 1, 2018, a new method for measuring bat performance ("USABat") was implemented by every youth baseball organization across the world.  This new method will establish a wood-like standard for all youth baseball leagues.

This new standard means that all non-USA Bat are illegal to use. Moving forward, the only bats allowed in Nashua Cal Ripken and most youth baseball organizations are ones that comply with the following:



  • USA Baseball Marking

  • 2 5/8" Barrel Maximum


Cal Ripken Minors, AAA, and Majors players (using hard baseballs) will need to use approved bats that have the USA Baseball Marking


The only exception to this rule is T-Ball and Rookies (using safe-tee-core balls).  All bats at that level require a USABat seal, available at:

The national governing body for the sport of baseball in the US, USA Baseball, established a Bat Study Committee of leading scientists.  These scientists conducted theoretical modeling, field testing and lab testing on baseball bats in the disciplines of physics, acoustics, and sports medicine. This committee shared its findings with the national member organizations, including Babe Ruth/Cal Ripken, who then endorsed the new USABat standard.