Umpire’s Corner

Umpire Resource Center

This page has useful links and files for umpires. If you have any questions or would like to sign up to umpire, please contact our Umpire in Chief.


  • Please be advised that Costa Mesa American Little League obtains criminal background checks for volunteer managers, coaches, board members, assistant coaches, umpires and any other persons, volunteers and/or hired workers who provide regular services to or who have repetitive access to, or contact with, players or teams. Additionally, please be advised that the criminal background checks (conducted through First Advantage) include a state and federal criminal history with sex offender information. The criminal background check, which is conducted annually, does not include a subsequent arrest notification after the background check has been completed. For additional information about Costa Mesa American Little League’s background check policy, please contact Costa Mesa American Little League or First Advantage at Additional information on Little League Background checks can also be found at

    Pursuant to California State Law, Article 3 (commencing with Section 11100) of Chapter 1 of Title 1 of Part 4 of the Penal Code, criminal history information is used internally. Confidential criminal history information is not disclosed to the public.


  • Umpire Assignments – Link to the most up to date schedule of umpire assignments for CMALL games.
  • Arbiter Sports – This site is used by D62 to schedule umpires for all leagues. CMALL league umpires can only be registered by the league UIC.


D62 Umpire Training Schedule
-2014 Rules Instruction Manual (RIM-bm)
 Pocket pre-game checklist
 Arbiter Instructions Basic
 Two Man Rotation Rev 3.0 (Powerpoint)
 Minor C Tournament Rules