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League Rules & Game Policies

Tournament Rules

MASC events are sanctioned by Softball Nation and played under Softball Nation playing rules, with the exceptions listed below. Where this page and the Softball Nation rulebook conflict, this page governs at MASC events.

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Game length

Pool play: 1 hour 15 minutes, no new inning. Games may end in a tie. Bracket play: 1 hour 30 minutes, no new inning. No ties. Championship: no time limit.

Run rule

12 runs after 3 innings. 10 after 4. 8 after 5. Applies in all games including championships.

Tiebreakers

If a bracket game is tied at the time limit, the international tiebreaker applies. Each half inning begins with a runner on second, the batter who made the last out of the previous inning.

Pool play seeding

  1. Seeding is determined in this order:

  2. Win-loss record

  3. Head to head

  4. Fewest runs allowed

  5. Run differential, capped at 8 per game

  6. Coin flip

Rosters and eligibility

Every team must hold a current Softball Nation membership and submit an official roster through its Softball Nation team page before its first game. Age eligibility follows the Softball Nation cutoff of August 31.

A player may appear on only one roster per event.

Protests

Judgment calls are not protestable. Rule interpretation and player eligibility protests must be raised with the tournament director before the next pitch. The tournament director's decision is final.

Conduct

Ejected coaches or players sit the remainder of that game and the following game. A second ejection ends that person's weekend. Abuse directed at umpires, tournament staff, or opposing families is grounds for immediate removal from the park without refund.

Equipment

Bats must carry a stamp approved under Softball Nation rules. Metal cleats are not permitted in 14U. Game balls are provided by MASC.

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