St. Sebastian CYO is affiliated with St. Sebastians Catholic Church which is located at 373 Bon Air Road, Kentfield, CA 94904. The mission of Catholic Charities CYO Athletics program encourages the healthy growth and development of the whole person by hel

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2019-2020 St. Sebastian CYO 

Registration is now open




October 8.9.10. 16 & 17 

Grade evaluation day/times - TBA

Location: Kent Middle School


Season:  11/01/2019 - 3/22/2020



Practice begins the week of November 1, 2018

Tournaments in November/December

The Marin CYO Basketball season commences on 


Player Evaluations will be held during the following days and times at  Kent Middle School.

Every player expecting to play CYO should attend. Rosters will be filled on a first come first serve basis.

It is highly recommended all players should be registered before evaluations.  This allows us to know the number of participants in advance so we can determine the appropriate number of teams and coaches needed. It is crucial for you to have completed the online registration prior to attending your age group evaluation. Since roster spots are limited, players will selected on a "first come first serve basis".  No child will be permitted to participate without a completed registration.  If you have any questions email Bob McCullough at 

Parents are not allowed in the gym during evaluations.  Evaluators and coaches will be allowed.

If you are interested in coaching please let Bob know.  Email Bob at St. Sebastian CYO and Marin CYO will be offering coaches training sessions. Dates and times need to be determined. 




October 8 - October 17, 2019

Grade evaluation day/times 

Location: Kent Middle School


       3rd Grade Boys,  TBA

       4th Grade Boys, TBA

        5th Grade Boys,.TBA

         6th Grade Boys, TBA

       7th Grade Boys, TBA

       8th Grade Boys, TBA


4th Grade Girls,  TBA

5th Grade Girls,.TBA 

  6th Grade Girls, TBA  

7th Grade Girls, TBA

8th Grade Girls, TBA


Season:  11/01/2019 - 3/22/2020

Practice begins the week of November 1, 2017

Tournaments in November/December


3rd grade league play begins in January.  Contact for more information.


Marin County CYO provides game schedules, league standings, CYO rules and general information.

All questions should be addressed to regarding registration, evaluations and administrative questions. All questions team or player specific should be addressed first to Coaches after teams have been formed.  Grade Coordinators and Bob McCullough at St. SebastianCYO can address questions before teams and coaches have been formed and selected.