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Dizzy Dean Baseball bat rules

Dizzy Dean is listed by USA Baseball among USABat-adopting orgs, but Dizzy Dean’s own rulebook is more permissive for ages 5–12 than a pure USABat-only league.

Ages 5–12USA · BPF 1.15 · BBCOR

Ages 13–19BBCOR required

Barrel sizes 5–122¼ / 2⅝ / 2¾ OK if stamped

Altered batsLifetime ban

2025 Common Rule 2:07 (summary)

Ages 5–12: non-wood bats must meet 1.15 BPF with a clearly identifiable manufacturer stamp or be legal BBCOR or legal USA bats. Barrel diameters 2¼″, 2⅝″, and 2¾″ are contemplated in that age band when properly stamped.
Ages 13–19: non-wood bats must meet BBCOR, −3 drop, max 2⅝″ barrel.
Broken/cracked/denting bats that deface the ball are illegal; illegal-bat use can eject player and head coach.

Sources: 2025 Dizzy Dean Baseball Rules (PDF) · USA Baseball — About USABat

Confirm the current year’s PDF on dizzydeanbbinc.org before a World Series or state tournament — Dizzy Dean updates common rules annually.

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 / division	Max barrel	Notes
Ages 5–12	2¼″, 2⅝″, or 2¾″	If properly stamped USA, BPF 1.15, or BBCOR
Ages 13–19	2⅝″ max	BBCOR −3 required for non-wood

Dizzy Dean Common Rule 2:07 (2025): younger ages expressly allow 2¾″ when stamped; older ages BBCOR 2⅝″.

Reference: 2025 Dizzy Dean Baseball Rules PDF

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

Page reviewed: October 23, 2026