MGS Tremors is the competitive travel ball and summer club program for Marin Girls Softball.  Marin Tremors is open to all registered Marin Girls Softball players and field teams from 8U to 14U. 

MGS Tremors hosts teams with players that range from the elite, to the developing player.   We are incredibly proud of this focus, ensuring that every player that wants to continue developing their competitive softball, has the opportunity to do so.

Our programs start in January (Tremors Black), May (Tremors Gold and Club), and September (Tremors Fall Ball). 

Click here to visit our About Us page.

Tremors gear is available at our new online squad locker store.   Enter the code TREMORS15AS to get a 15% discount on all purchases.   To visit the store, please click here.

Need something urgently?   Visit T&B Sports on the corner of 4th and D Streets in San Rafael.  They have a range of gear they can rapidly add a Tremors logo.

The Marin Tremors Club Summer Ball Waitlist.  

Tremors Club registration closed at 9pm on Sunday, May 21st.  To add a player to the waitlist, please click here:

Tremors Club Waitlist

Our Club program is for 8U, 10U, and 12U players that love softball and want to continue into the summer but are not ready for full travel ball programs. Maybe it's because you're traveling through the summer or still developing your game. Either way, the Tremor's Club program is a great way to keep developing your skills, make new friends, and have fun playing softball.

The season is held from June through to the last weekend of July. Club teams are formed by the area where Marin players reside. North, South, East, West. Teams have one practice per week and play 1 to 2 games each Saturday morning. Practices are held later in the afternoons during the week for players who are attending camps. As the teams develop so do the rules. The goal is to introduce all players to the full rules of softball: no adult pitch, stealing, dropped 3rd strike, etc.

The cost of the program is $295.00 and includes a team jersey. As is MGS policy, financial scholarship applications can be found on the registration site. If you have vacation plans that's not a problem for Club, but please make sure you let us know in the registration when you'll be away so we can plan team sizes accordingly.

We will have minimum and maximum player counts. There are no tryouts for the Club Season. Please register early. Registrations close on Sunday, May 21st at 9:00 pm.

Finally, this program is all volunteer-run. And we need volunteers to make this a successful, fun season. If you love the idea of girls playing team sport that helps develop confidence, self-esteem, teamwork, and social skills, please consider helping through coaching, scheduling, or other administrative activities. You can select volunteer options in the registration.

To register, please click here!

MGS Tremors has played a very special role in the path these players have taken to college.  For all of these players, their first experience of travel ball softball was with MGS Tremors.  We are incredibly proud of the journey they have all taken.

Georgia Pineda - Emory University
Sammy Horn - Boston College
Sadie Leonard - Williams
Rose Malen - Chapman University 
Mia Kessinger - Haverford College
Vivian Johnson - St. Lawrence University
Rebecca Fong - University of Hawaii
Kassidy Stetler - California State University Monterey Bay
Elodie Townsend - Smith College
Kim Scarsella - Cornell University
Aria Pogni - Loyola Marymount University
Anne-Marie Iker - Amherst College
Shawn McCullough - Feather River College
Sami Mericle – Oberlin College
 
There are many more, and we're working on building an appropriate tribute to all our MGS Tremors alumni.  Please forward any additional names and the college they are or did attend.