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Babe Ruth / Cal Ripken bat rules

Cal Ripken (typically ages 12 and under) and Babe Ruth Baseball are USA Baseball national member organizations that adopted USABat.

Youth non-woodUSABat mark
BPF 1.15 onlyNot for USABat leagues
One-piece woodGenerally OK
Local chartersConfirm age division

Summary

USA Baseball lists Babe Ruth Baseball / Cal Ripken Baseball among national member organizations that adopted the USABat standard beginning January 1, 2018. Non-wood youth bats need the USA Baseball certification mark. Solid one-piece wood bats may be used with or without the mark.

Older Babe Ruth age groups may transition toward BBCOR — check your charter’s current rulebook for 13–18 divisions.

Source: USA Baseball — About USABat

We cite the national USABat adoption here. Individual Babe Ruth / Cal Ripken charters can publish local amendments — confirm with your league.

Barrel size by age Published limits

Maximum barrel diameter (inches) commonly published for this program. Length and drop limits are separate — check the notes.

Age / divisionMax barrelNotes
T-Ball2⅝″ maxUSA Baseball T-Ball stamp
Cal Ripken (Rookie–Major)2⅝″ maxUSABat mark; no BBCOR; no USSSA
Babe Ruth 13–152⅝″ maxUSABat or BBCOR .50
Babe Ruth 16–182⅝″ maxBBCOR .50 required (−3)

Babe Ruth League published bat chart: 2⅝″ barrel maximum across these divisions.

Reference: Babe Ruth League bat rules

Rules change. Always confirm with your league or event director before game day.

Page reviewed: October 22, 2026