On Long Island

What this desk runs

• Adult hardball on Long Island — age boards from 18+ through 60+.
• Spring slate, standings, rainouts, and club registration on one hub.
• Same MSBL/MABL pathway that feeds regional tournaments and national classics.

40th Anniversary · 1986–2026 · April – June · Melville

Age boards

Divisions this season

National MSBL/MABL programs span 18+ and up (including 25+, 35+, 45+, 55+, and older boards). Long Island runs 18+, 25+, 35+, 45+, 55+, and 60+ this season.

• MSBL 18+9 clubs
• MSBL 25+9 clubs
• MSBL 35+10 clubs
• MSBL 45+5 clubs
• MSBL 55+7 clubs
• MSBL 60+6 clubs

National affiliation

MSBL / MABL

Men's Senior Baseball League / Men's Adult Baseball League is the national adult hardball program. Headquarters sit in Melville — same town as our spring window. For national rules, tournament entry, and the affiliate map, use their site. We do not republish their full rulebooks or story archives here.

National program details, tournament entries, and updated rules live on msblnational.com — Long Island MSBL/MABL is the local desk on Diamond League Desk.