La Mesa National Little League

Little League Bat Info – La Mesa National Little League

La Mesa National Little League · 2026 Season

Little League Bat Rules

Everything you need to know before buying a bat — certification requirements, division-by-division rules, sizing guides, and buying tips.

Official Rule 1.10

The Official Bat Rule

The bat must be a baseball bat which meets the USA Baseball Bat standard (USABat) as adopted by Little League. It shall be a smooth, rounded stick, made of wood or of material and color tested and proved acceptable to the USABat standard.

Non-wood and laminated bats used in Little League (Majors) and below, Intermediate (50-70) Division, and Junior League divisions shall bear the USA Baseball logo signifying compliance. All BPF–1.15 bats are prohibited. The bat diameter shall not exceed 2⅝ inches.

Full details at LittleLeague.org/batinfo →

Certification

The USA Baseball Stamp

Before purchasing any bat, you must verify it carries the official USA Baseball certification mark. Here's what to look for.

Look for this mark on the barrel of the bat

What You're Looking For

The USA Baseball logo must be permanently stamped or printed on the barrel of the bat. This mark confirms the bat has been tested and certified to meet the USABat performance standard required for Little League play.

✓ Bats stamped with the "USA Baseball" mark — approved
✓ Wood bats of any kind — approved
✗ Bats marked "BPF 1.15" — not permitted
✗ Bats with no certification mark — not permitted
✗ Barrel diameter greater than 2⅝ inches — not permitted
✗ BBCOR bats in Majors and below — not permitted

By Division

Requirements by Division

Bat rules vary slightly by division. Check your player's division below before purchasing.

Division	Ages	Certification Required	Max Barrel	Special Notes
T-Ball	4–5	Special	2⅝″	Bat must be 26″ or shorter and labeled "Only For Use With Approved Tee Balls"
Rookies	6	USA Baseball	2⅝″	Standard USABat certification required
Caps	7–8	USA Baseball	2⅝″	Standard USABat certification required
Minors	9–10	USA Baseball	2⅝″	Standard USABat certification required. BPF–1.15 bats prohibited.
Majors	11–12	USA Baseball	2⅝″	Standard USABat certification required. BPF–1.15 bats prohibited.
Juniors	13–14	USA Baseball	2⅝″	USABat or BBCOR (.50) certified bats permitted at this level

Sizing Guide

Bat Sizing by Age

A properly sized bat improves swing mechanics and performance. Use these general guidelines — always have your player swing a bat before purchasing if possible.

🧸 T-Ball (Ages 4–5)

Length24″ – 26″

Weight13 – 15 oz

Drop−10 to −13

Max Barrel2¼″

🌱 Rookies (Age 6)

Length25″ – 27″

Weight14 – 16 oz

Drop−10 to −12

Max Barrel2⅝″

🧢 Caps (Ages 7–8)

Length26″ – 29″

Weight16 – 18 oz

Drop−10 to −12

Max Barrel2⅝″

⚾ Minors (Ages 9–10)

Length28″ – 30″

Weight18 – 20 oz

Drop−10 to −11

Max Barrel2⅝″

🏆 Majors (Ages 11–12)

Length29″ – 32″

Weight19 – 22 oz

Drop−8 to −10

Max Barrel2⅝″

🌟 Juniors (Ages 13–14)

Length30″ – 33″

Weight20 – 26 oz

Drop−3 to −8

Max Barrel2⅝″

Questions About Equipment?

Our equipment page covers everything else your player needs for the season — gloves, cleats, helmets and more.

View Equipment Page Contact Us Official Bat Rules

Contact

La Mesa National Little League
PO Box 601
La Mesa, California 91944

Email: [email protected]

Website Manager

La Mesa National Little League

La Mesa National Little League

Little League Bat Rules

The Official Bat Rule

The USA Baseball Stamp

What You're Looking For

Requirements by Division

Bat Sizing by Age

Questions About Equipment?

Contact

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