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Diamond Youth & Diamond Boys

USA Baseball National Member Organizations (often abbreviated DYB / DBB). Closely related historically to Dixie Youth structures; bat standard follows USABat for listed youth divisions.

Listed youth divisionsUSABat required

BPF 1.15 onlyNot for USABat divisions

Older / localVerify division rules

Stamp guidance

USA Baseball lists DYB Baseball and DBB Baseball among organizations that adopted the USABat standard. If your local charter plays under Diamond Youth / Diamond Boys tournament rules for those age brackets, look for the permanent USA Baseball mark — not a USSSA-only BPF 1.15 bat.

Local parks that formerly used “Dixie” branding may still follow DYB/DBB or Dixie Youth rulebooks — ask which sanctioning name appears on your team’s charter.

We do not have every local Diamond charter’s bylaws. Use this as stamp-family guidance, then confirm with your league.

Sources: USABat / USA Baseball · usabat.com · Related: Dixie Youth

Barrel size by age Stamp-family default

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

Age / division	Max barrel	Notes
Listed youth DYB/DBB divisions	2⅝″ max	USABat stamp family (same diameter ceiling as USABat NMOs)
Older / Boys divisions	Confirm PDF	Often moves toward BBCOR 2⅝″ — confirm charter book

USABat-adopting NMO: use USABat max barrel (2⅝″) unless your charter publishes a tighter limit.

Confirm with your league: Exact barrel caps can differ by town, age group, and season PDF. Use this table as a starting point.

Reference: USA Baseball NMO list + confirm local charter

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

Page reviewed: October 23, 2026