Volunteering for AYSO

Thanks for your willingness to volunteer for Castaic AYSO.  We are an all-volunteer program, so your help is critical to the success of the program.  Whether as a coach, referee, team parent, or board member, thank you!

But in order to serve as a volunteer, there is one more thing to do.

First, contact us at volunteer@aysocastaic.com

After confirming your availability and position, you must sign up on the Blue Sombrero website.

There is a background check fee for all volunteers, so please be sure to contact us at the above email first so we can be sure to cover the fee for you.

Blue Sombrero is a sports-league management system adopted by AYSO in 2017.  Honestly, it’s a terrible system, with a counter-intuitive interface, and we’re being forced to use it.  But the good news is you only have to get your info in there once, and then next year it will be simple to renew your volunteer registration.  So even if you get frustrated with the process, please stick with it!

Castaic AYSO Blue Sombrero Site

This document describes the basic process:

How to Register as an AYSO Volunteer in Blue Sombrero

Before you get started, please make sure you have the following information.  This is the required info for a volunteer registration:

First Name:

Last Name:

Last Four Digits of SSN:

Relationship To Participants:



Photo ID Type: (probably driver’s license)

Photo ID Number:

Photo ID State:

Photo ID Expiration Date:




Zip Code:

Cell Phone:

Email Address:

Reference #1 Organization: (an organization, job, Church, community group etc. that you’ve worked with)

Your Position/ Role: (what you did for them)

Reference #1 First Name: (A person from the Reference #1 location that can vouch for your character).

Reference #1 Last Name: (That person’s last name).

Reference #1 Phone Number:

Reference #1 Organization Address:

Reference #2: (the same stuff as #1, just pick a different person from a different group).

-Sign the waiver.