Rules

League Rules

MSBL National Rules

Official rules from our parent organization, the Men's Senior Baseball League.

View National Rules

Foundation: KCMSBL follows Official Major League Baseball Rules unless otherwise noted in our MSBL National Rules or league-specific rules below.

National Rules: All league rules are based on the MSBL National and Tournament Guidelines (linked above). The rules below either replace or supersede the national guidelines for KCMSBL play.

Applicability: All rules are valid for regular and post-season play unless specifically noted.

Rules for ALL Leagues

1. Protests
  • All protests require a $200 non-refundable fee paid prior to review
  • If ruled in favor, a $200 credit will be applied to next season's fees
  • Must be submitted by team manager via email to Commissioner and Co-Commissioner
  • Reviewed by KCMSBL Board - all decisions are final
2. Modifications to Rules
  • KCMSBL Board reserves the right to adjust rules as necessary
  • All modifications posted immediately and communicated to League Directors
  • In-season changes require unanimous vote by league managers
3. Code of Conduct

All individuals at KCMSBL events must:

  • Adhere to KCMSBL and facility rules, regulations, and guidelines
  • Act in a manner that properly represents KCMSBL
  • Provide an environment devoid of discrimination and harassment
4. Ejections and Suspensions
  • All ejections reported to KCMSBL Board by officials
  • Board reviews each case individually to determine suspension length
  • Non-rostered attendees ejected are barred from events for minimum two weeks
5. Time Limits

Regular Season:

  • After 2:15, no new inning starts unless tied
  • At 2:30, game is over (drop dead)

Playoffs:

  • After 2:15, no new inning starts unless tied
  • No drop dead time — playoff games must produce a winner
  • If tied, the California Rule applies and repeats each inning until one team wins

Fall Ball:

  • After 1:45, no new inning starts regardless if tied
  • At 2:00, game is over
6. Mercy Rule
  • Game ends if a team is ahead by 10 or more runs after 5 innings
7. Standings Tiebreaker

When two or more teams are tied in the standings, the following tiebreakers are applied in order:

  • 1st: Head-to-head record between the tied teams
  • 2nd: Runs allowed (fewer is better)
  • 3rd: Run differential (runs scored minus runs allowed)
8. Ties - California Rule

How it works:

  • Applied if tied after 7 innings or after 2:15 time limit
  • Runner placed at second base (must be preceding batter in lineup)
  • One out applied against offensive team

Regular Season: California Rule continues until 2:30 drop dead time — game may end in a tie

Playoffs: No drop dead time. California Rule repeats each inning until a winner is decided — playoff games cannot end in a tie

League-Specific Rules

65+ Wood Bat League

Start Date: May 12th

League Age Rules
  • 65+ league with exemptions
  • Age calculated by calendar year
  • Each team allowed max 4 exemptions aged 60-64
  • New players must be 64 to pitch
  • All exemptions must be reported to and approved by League Office
Bunting
  • NO bunting allowed
  • If attempted: Dead Ball Strike (out with two strikes)
Stealing Bases
  • Runners allowed to steal 2nd base only (not 3rd)
  • On passed ball (ball leaving home plate circle), runners may advance
Batted Ball to Outfield
  • Ball to outfield grass = batter awarded 1st base (cannot be thrown out)
  • If batter rounds 1st base, can be thrown out

55+ League

League Age Rules
  • Pitchers must be 55 years or older to pitch
  • Each team allowed three players aged 50-54
  • Players aged 50-54 are not allowed to pitch
Roster Requirements
  • All teams must submit their roster to the website with birth dates
  • Rosters must be kept up to date throughout the season
  • August 1st: Rosters become final for playoffs
  • Any exceptions require vote by 55+ managers and league commissioners
Courtesy Runners
  • Courtesy runner must be the last out (not last batted out)
  • Pitchers and catchers are always allowed a courtesy runner
  • If a runner is replaced by either the last out or a pinch runner, they are not allowed to steal
  • When a play is made on the courtesy runner by the defense, the courtesy runner has the option to stay on base or advance

45+ Scotty Matteson League

Exemptions
  • Each team allowed two exemptions under age 45
  • Exemptions must be 40 years old by opening day
  • Exemptions must be 44 years old by opening day to pitch

35+ Charlie Holmes League

Exemptions
  • Each team allowed three exemptions under age 35
  • Exemptions must turn 30 by end of calendar year
  • No pitching restrictions for exemptions

18+ Federal, Senior League, and Fall Ball

No league-specific rules (except Fall Ball time limit - see above)