Baltimore, Washington DC, Northern Virginia, and suburban Maryland (DMV).
Metro hub: We list named travel/regional pathways parents actually search. Dozens of park-district house leagues exist — match their stamp family, then confirm the season PDF. Tournament circuits get a separate search later.
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.