About BatChecker

What this site does

Bat rules are confusing. Baseball and softball use different certification systems, and Little League, USSSA, PONY, Babe Ruth, high school, and college each accept different stamps. Rules change by age division, and bats can be decertified in the middle of a season.

The official answers are spread across league websites and certification lists. This site puts a bat's stamp, your league's rule, and any known decertification in one place, with the date it was last checked.

Where the data comes from

Baseball: bats are checked against the USA Baseball approved and decertified lists and the Washington State University Sports Science Lab BBCOR certified list.

USSSA: USSSA does not publish a list of approved models. A USSSA big barrel bat is legal when it carries the USSSA 1.15 BPF mark, is made by a USSSA licensed maker, and is not on USSSA's withdrawn list, so that is what we check, using USSSA's bat rules, its licensed maker list, and its withdrawn list.

Fastpitch: bats are checked against the USA Softball certified and non-approved lists. NSA, ISA, and USSSA fastpitch marks show as "not confirmed" until they are checked against that association's own list.

League rules come from each league's published rules. Specs such as drop, length, and barrel come from maker and retailer listings.

The lists were last checked September 25, 2026. Every model page shows its own date. There is no fixed update schedule, so check the official list before you buy.

Who runs it

BatChecker is run by one person. It is not owned by, affiliated with, or sponsored by any bat maker or league, and no retailer sponsors it. Nobody pays to change a verdict. The site earns money from ads and affiliate links; here is how that works.

Local rules

Local leagues can adopt stricter rules than their national body, and tournament directors can set their own equipment rules. BatChecker reflects the national and sanctioning body rules. Confirm with your league or tournament before buying.

Report an error

Spotted a mistake, or did your league change a rule? Email hello@batchecker.com.

Last reviewed: September 25, 2026