Aliso Viejo Little League, Baseball, Youth Sports

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Instructions and Videos and Important Links
  Umpire Game Sign-Up Instructions 2018 AVLL...
AVLL Umpire Access
  Aliso Viejo Little League Umpires If...
AVLL Umpire Policy
  Aliso Viejo Little League 2018 Umpire Policy   “Umpiring...
Some Baseball Rules You Probably Thought You Knew
  Some Baseball Rules You Probably Thought You...
Instructions and Videos and Important Links

Umpire Game Sign-Up Instructions

2018 AVLL Local Rules

Heads Up Concussion Certificate

2018 Volunteer form

Umpire Positioning 60 Foot Diamond - Two Umpire Rotation

Plate Umpire Game Management Tool - "Greene Card"






AVLL Umpire Access

Aliso Viejo Little League Umpires

If you have any questions on what it takes to be an AVLL Umpire feel free to reach out to the guys in charge:

Umpire In Chief  - Matt Hamrock

Deputy Umpire in Chief  - Erik Hansen

Most importantly, you must have been approved with a background check and have the appropriate access in the website to umpire games. These efforts must completed each year, so if you have not done either of these, please reach out to Scott or Jon to get this taken care of quickly.

To sign up for games please click here on Master Schedule or under Home Plate on the left.  Games that still require an umpire will list will display a drop down box to the right.

Simply click on the drop down arrow and select the umpire position.  You will receive an email confirmation of your volunteer signup.

**If you are looking for umpire opportunities for Juniors or Seniors games, please use the District signup found by clicking HERE.**


You can limit the master schedule calendar view to only display games by clicking the check box for "Show games only" at the top of the calendar listings. Also, if you don't see games that you'd expect to see, make sure and clear the filters under the options link on the right side of the page.

For The Basics of Umpiring...Check out this short 10 minutes YouTube Video.

AVLL Umpire Policy

Aliso Viejo Little League 2018 Umpire Policy


“Umpiring is as important to the successful conduct of a local league program as is managing and coaching”. It is also a privilege to work with our children from another perspective.

NEW THIS YEAR:  Understanding the rules of baseball and it’s officiating is paramount to the success of every manager and coach.  It’s even more important to understand that umpires are volunteers and trying their best to call a fair game.  To this end, all Managers and coaches will be responsible for umpiring games to gain this understanding when working with umpires during games.

IMPORTANT: Umpires are protected. Aliso Viejo Little League realizes that umpiring is a volunteer role and as such all volunteers should be treated with the upmost respect and courtesy due their position.  Zero Tolerance will apply to all participants and AVLL members during the season of play, and failure to comply with this policy will be met with swift removal from the field and may ultimately result in the loss of membership and participation in the league. 

Basic manager, coach, and parent participation requirements:

  1. UMPIRE VOLUNTEERS: Each A, AA, AAA, Majors, Intermediate and Juniors Division team will designate a Team Umpire Coordinator (UC)The Team UC will be the designated liaison to ensure their team meets the minimum games required to umpire (per Section 4).  
  2. MINIMUM GAME REQUIREMENTS: Each team is required to cover a minimum of 2 points per week. 2 points will be earned for umpiring behind the plate and 1 for doing the bases.  This will be tracked weekly.  Failure to do so will result in ineligibility for the playoffs for your team.
  3. ALL MANAGERS IN AA, AAA, Majors, and Intermediate divisions are required to umpire at least one game behind the plate and 1 game on the bases BEFORE AND AFTER the Spring Break. Failure to do so will result in a 1 game suspension We will be keeping track but we will not remind you so PLEASE SCHEDULE EARLY!
  4. UMPIRE ASSIGNMENTS:  All Assignments will be coordinated and scheduled through the AVLL.ORG website. Questions can be submitted to the UIC or Deputy UIC. Each Team UC is required to ensure that their team umpire volunteers have registered for the minimum number of games required for coverage. A weekly report of umpire volunteer assignments will be reviewed by the UICs and Commissioners and those teams not meeting the minimum requirements will be subject to manager disciplinary actions outlined below.
  5. UMPIRE CLINICS: It shall be mandatory that all participants in the League’s Umpire Pool, as defined above, attend the Umpire Clinics provided each year designated by the UIC and sponsored by either AVLL at one of our facilities or by another District 55 hosting league.

AA DIVISION BONUS: The 6 AA teams that umpire the most games will receive 1st round byes in the playoffs.

Umpire volunteers are strongly encouraged to umpire a game in a division OUTSIDE your own teams’ division, but this is not a requirement. You can umpire within your own division if BOTH managers agree to this.


T-Ball, Rookie, and Single A, Umpire volunteers should consider umpiring the plate and bases for AA & AAA division games for additional experience prior to moving into the Majors & Intermediate divisions.

League youth who have an interest in umpiring may be assigned at the AA & AAA level as a base umpire for training purposes. These assignments will be coordinated between the AA, AAA Commissioner, and the UIC. 

INTERMEDIATE, JUNIORS & SENIORS Divisions: The UIC will establish a Separate Umpire Pool from the above mandatory and volunteer umpires to umpire the Plate and Bases for all Seniors Division games as required by District 55.

(Aliso Viejo Little League officials and directors are prohibited from receiving payment)

The above Umpire Pool may be augmented by additional volunteers associated with the League at the UICs discretion.

DISCIPLINARY ACTIONS: Any manager in A, AA, AAA, Majors and Intermediate whose team does not produce the coverage to meet the minimum number of game assignments and/or whose volunteer umpire misses a volunteer umpire assignment will be subject to the following penalties and or actions:

  1. First Offense – Written or Electronic communication sent informing and warning the manager of the infraction if related to a missed assignment. If related to lack of game coverage, manager may be subject to suspension for 24 hours until coverage requirements have been met.
  2. Second Offense – Written or Electronic communication sent informing the manager of the second offense related to missed assignment will be subject to a one game suspension for the manager.
  3. Third Offense – If a team misses 3 umpiring assignments or neglects to provide the necessary coverage whether they are missed by any combination of coach, manager or specified parent volunteer, the offending team manager may be subject to review before the AVLL Disciplinary committee for further disciplinary action.


DRESS CODE: All Aliso Viejo Little League volunteer umpires will be required to adhere to the Umpire Dress Code. You will be required to wear the following when assigned to a game:

  1. A black or AVLL umpire hat
  2. An AVLL umpire shirt or regulation blue or black umpire shirt with little league patch on the left sleeve.
  3. PANTS: Shorts and T-Shirts WILL NOT be permitted. Jeans are acceptable for bases only. Grey or Black pants are preferred.
  4. Shoes: Closed toe shoes, black in color are the preferred but sneakers will be permitted. Any other form of footwear or sandals WILL NOT be permitted for safety reasons.
  5. All plate gear is to be worn properly under your outer clothing. . Make sure that your pant leg will accommodate shin guards and allow for easy movement for your plate assignments.
  6. Clean shirts will be available for game use for those who need them in the Umpire Shed.
Some Baseball Rules You Probably Thought You Knew

Some Baseball Rules You Probably Thought You Knew

There's been lots of discussion this season about Obstruction and Interference Calls. Most get the two confused. I've received some cool short MLB and NCAA video clips on some Obstruction and Interference calls and even though the rules may differ somewhat between L.L., MLB and NCAA these are still great learning tools for Coaches and Umpires.

Did you know that a runner in a pickle has the right of way to the base and a defensive player standing in the base path during a pickle rundown is actually "obstruction" if he impedes the base runner? Check this out:

Here's another good "obstruction" call video. If you pay attention to the previous video and this video in both cases the play by play announcers don't know the difference between interference and obstruction. When a defensive player impedes a runner it is "obstruction" not "interference" as the announders proclaimed. Check this video out:

In this "obstruction" call it shows that putting a base runner in a scissors lock is not

Lastly here's a great video showing a "runners interference" call in NCAA on the second baseman trying to make a play on the ball:

According to the Little League rulebook..."Obstruction" and "Interference" calls are judgement calls while at the same time clearly defined. Judgement calls are also not protestable.

Just remember....

Umpires are human!

Umpires don't see every play in every game!

Umpires in AVLL are volunteers!