OBA Rules

Follow this link to the OBA Constitution and Playing Rules


The links below provide summaries and approved interpretations of the following Baseball Ontario rules.  Pitching Rules, Mosquito Rules and Peewee Rules have been updated for 2010!!

Please note that as a result of the Board of Directors meetings held April 15, and May 27, 2007 the following clarifications are being provided to the membership:

  1. Glasses/Sunglasses are not prohibited, and therefore may be worn by any player, including the pitcher.
  2. Lightning: Please remember, the baseball season is a prime time for thunder storms, so be aware of lightning and remember the 30-30 Rule.
    • 30-30 Rule:
      Determine the threat of lightning in your area.
    • 30 Seconds:
      Count the seconds between seeing lightning and hearing thunder. If this time is less than 30 seconds, lightning is still a potential threat. Seek shelter immediately.
    • 30 minutes:
      After the last lightning flash, wait 30 minutes before leaving shelter. Half of all lightning deaths occur after the storm passes. Stay in a safe area until you are sure the threat has passed.
  3. Baseball Ontario recognizes NOCSAE as their standard for Baseball Helmets. NOCSAE states that possible problems can be created from the painting and/or placing of stickers on helmets. Therefore, Baseball Ontario recommends that no modifications to a helmet be made, other than what is done by the manufacturer or is completed at the explicit directions of the manufacturer.