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Midwest youth baseball

IL, IN, OH, MI, WI, MN, IA, MO, and nearby. Includes Chicago-suburb circuits (e.g. CSYBA) plus statewide USSSA directors and huge travel venues.

Regional hub — not a full bylaw dump. Most locals inherit a national stamp (USA, USSSA, or BBCOR). Confirm with your league before game day.

What parents usually see

Park district / USABat rec leagues
CSYBA, RMSBO, WSBL, and similar Illinois locals
Twin Cities pathways (MYAS / Gopher State, MBL, Twins RBI)
USSSA Midwest state directors
Bullpen / Grand Park–area tournament traffic (IN)
PG / Triple Crown weekends
NFHS BBCOR for high school

Start with the stamp family

Little League / USABatRec & many town leagues USSSATravel & select Perfect GameEvent tabs matter BBCOR / NFHSHigh school USABat localsPark districts & rec Travel circuitsFive Tool, PS, Dreams Park… Chicago metroSuburbs + named locals Twin CitiesMinneapolis / St. Paul Detroit metroSE Michigan suburbs

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
Rec / Little League / PONY-style house	2⅝″ max	Usually USABat
Travel weekends (USSSA / PG)	Up to 2¾″ if big-barrel USSSA allowed	Event tab controls
High school / older	2⅝″ max	BBCOR −3

Metro hub: mixed stamp traffic. Use named league pages when listed; otherwise match your program’s stamp + this diameter guide, then confirm the local PDF.

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

Reference: Stamp-family defaults — confirm with your league

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

Page reviewed: October 23, 2026