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

My my My my
Welcome to St. Sebastian Basketball


2017-2018 St. Sebastian's CYO Basketball

(Kentfield/Greenbrae/Ross in Marin County)

Registration Closed 

(Please contact regarding registration)


To be determined for late registrants


Season:  11/01/17 - 3/22/18

Practice begins the week of November 1, 2017

Tournaments in November/December


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


Always check back here for updated info.

Also go to the Marin County CYO Website - they run the CYO organization and will have info. there


And, if you don't know the websites just google St. Sebastian CYO in Marin or Marin County CYO for the two different organizations.



CONFLICTS WITH GYM AND MP ROOM -Coaches add to your calendar- you CAN NOT use the gym/MP where stated.


11/15/17 - MP room not available for practice 


11/18/17 - MP room not available for practice 

12/14/17 - MP room not available for practice

1/30/18 - 2/01/18 Gym not available for practice - Setting up for Kent Concerts

2/15/18 - MP room not available for practice

3/15/18 - MP room not availablefor practice


League games begin January 6 & 7

Regular days teams play - Example: 4AG=4th grade A team Girls

  1. SAT – 4AG. 4BG, 4BB, 5BG, 5BB, 6BB, 6BG. 7BB (7BG)
  2. SUN – 4AB, 5AB, 5AG, 6AB, 6AG, 7AB, 7AG, 8AB, 8AG, 8BB, 8BG (7BG)

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


News Headlines Subscribe to St. Sebastian (Saint Sebastian) CYO Basketball RSS news feed.