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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

Know others?  Please email

Need Tremors Swag? Visit the store!

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.


Following on from a very successful, (and COVID-free!) Summer softball program, MGS Tremors is opening tryouts for the Fall Ball Softball Season.  We are inviting 8U, 10U, 12U, and 14U players who would like to be considered for Fall Ball teams to register now.

Due to COVID-19, the program will be focused on developing players for the 2021 softball season.  

  • Teams of up to 15 players will practice in a COVID-safe format.

  • The MGS Tremors Fall Ball season starts September 1st and runs through October.

  • The cost will be approximately $40 per week (for up to 9 weeks).   

  • Each team will have 3 practices per week, plus additional strength and conditioning sessions.

  • Players are allowed (even encouraged) to participate in multiple sports during the Fall season, and under MHHS guidelines, may participate in up to two cohorts (of which softball would be one).

  • It is understood not all players will be able to attend all practice sessions however, ideally should be able to attend at least two per week regularly.

  • Coaches will work with teams to identify a mandatory practice each week where they can expect attendance for all players.

  • Players who cannot attend all sessions will receive practice programs they can practice on their own.

  • Parents and players will be required to sign and abide by COVID-19 protocols outlined in the waiver at the time of registration.


While it is unlikely that any softball tournaments or games will be held during this Fall season, this is a great opportunity for players who love their softball to join teams getting ready for the 2021 season.

For more information or to register to for the virtual tryout, please visit


2019 Championship Tournaments

Congratulations to MGS Tremors 12U Black for their qualifying for the Western Nationals in Oregon, MGS Tremors 10U Black for their outstanding run at the Western Nationals in So Cal and MGS Tremors 8U for a tremendous showing at the State Championships in San Diego!

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MGS Tremors Black is the most competitive team program for MGS Tremors.  Teams compete in Open, A and B tournaments around the Bay Area and state.   Tryouts for the MGS Tremors Black teams were held November 10th and 17th, 2019, with practices starting in January.

To learn more about our Tremors Black program, click here.

To compare all of our programs, click here.

MGS Tremors Gold

MGS Tremors Gold is our Summer Travel Ball program.  Kicking off right after the completion on the MGS recreation season, the MGS Tremors Gold program is the core of MGS Tremors.  

To learn more about our  Tremors Gold program, click here.

To compare all of our programs, click here.

MGS Tremors Club

MGS Tremors Club program is for players who are developing their game, or are not quite ready for the commitment of Travel Ball.  Our Club program is one of the most popular programs we conduct each year. 

To learn more about the Marin Tremors program, click here.

To compare all of our programs, click here.

10U Gold takes 1st Place Field of Dreams Pleasant Hill July 14, 2019

Coaching with Tremors!

Are you an experienced softball player or coach, who is interested in working with your own Tremors team?  Click here to learn more about coaching with Marin Tremors in 2019.

Which Summer Program is Best for my player?

Wondering which program would be best for your player, and your family this season?  Listen to our Parent Information Call to help you decide which program will work best!

Parent Information Call Audio

10U Black tie 25th out of 45 teams at Western Nationals Moorpark, CA

10U Black at Western Nationals in Moorpark, CA July 22-28, 2019

14U Black takes 1st Place Benecia Firecracker Invitational July 7, 2019

8U at State Championships Opening Ceremonies San Diego July 12, 2019

12U Gold takes Silver 1st Place San Jose Bagby Classic June 16, 2019

12U Gold takes Silver 1st Place San Jose Bagby Classic June 16, 2019

Marin Tremors 2019 Season

In 2019, Marin Tremors is introducing a number of exciting new initiatives.  Based on all the great feedback from our players, coaches, and parents, we know that these initiatives and changes will continue to position Marin Tremors to meet our objective of becoming the leading softball travel ball program in the Bay Area.

Download our 2019 Season Overview PDF file by clicking on the icon below:


What is Marin Tremors?

Marin 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 fields teams from 8U to 14U. 

Marin 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.

8U takes 1st Place Petaluma Father's Day June 16, 2019

10U Gold takes Silver 2nd Place CSA Napa/Vacaville June 9, 2019

12U '05 Team wins 2018 Rohnert Park Rebel Classic July 22, 2018!

12U '06 Team takes Silver 2nd Place in Napa June 10, 2018

12U Black takes 2nd Place Wine Country Classic Windsor June 9, 2019

10U B Team takes 2nd Place Windsor July 1 2018

Tremors 12U Black play under lights, finishing 3rd in the Double Double AST Tournament on April 6/7

8U Team wins 1st Place Wine Country Classic Windsor June 9, 2019

12U Gold takes Silver 2nd Place CSA Napa/Vacaville June 9, 2019

10U C Team takes 2nd Place San Jose July 8 2018

10U Black takes 2nd Place CSA Incline Village, NV June 16, 2019

10U Black takes 2nd Place Wine Country Classic Windsor June 9, 2019

Fall 10U take Napa tournament Sept 16 2018

10U Team takes Silver 1st Place in Napa Sept 16, 2018

8U Team takes 2nd Place Windsor July 1 2018

10U Black takes Gold 2nd Place AST Queen of the Hill Martinez April 14, 2019