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Bill Gaito is back to work with MGS pitchers!  Clinics run December 2017-March 4, 2018.  Payment and sign up information is below.  These clinics are for 10u, 12u, and 15u pitchers only.  

You must currently be a registered as a MGS player for 2018 in one of our districts to sign up. 

Payment link for MGS pitching clinics is below.  Payment must be made no later than the Monday of your scheduled clinic

# of sessions

MGS email contact

Show this coupon at T&B for savings


Did you know Sport Engine has an app?

Your roster will automatically show up as will your game schedule (when it becomes available). Download for free!

MGS Rainout text line

Send text to this number: 40404  

Type in : Follow mgsrainout

You will be a member for all MGS fields.  If a field is closed (even if it is not yours) it will be texted to you as a follower.  You need to read carefully to make sure it is your field as you are a member of the whole of MGS!  If you do not get text saying a field is closed-- assume it is open. We are only texting closures. 

Umpire Training Class

We will hold a training course on Sunday, March 4th.

Location - Larkspur Rec Office, 240 Doherty Dr, Larkspur (portable across from Piper Park)

Time - 1 - 4 pm.

All new and returning umpires are requested to attend and plan to stay for the whole time.  We will spend part of the time on the field at home plate.  Bring your Ca DL if you have.  Thanks.

Who Are We?

Marin Girls Softball League is a volunteer-driven recreational league for youth fast pitch softball in Central and Southern Marin County. We are a recreational program - any age-eligible child can register and all registered kids play. 

This website is the central location for all League, Travel Ball, and District news.  At this site, players, parents, family and friends can get updated information about the MGSL, our Tremors Travel Ball teams, and about local Districts. Bookmark this site and come back often and regularly to stay current with all of the news related to players, teams, schedules, standings, clinics and other relevant information. We will update this page regularly to keep all MGSL participants and interested people up to date on our softball league.

Age Division Overview

Age is based on child's age on January 1 leading into Spring season.
Players 5 and 6 years old as of January 1st of the calendar year 
T-Ball and some coach pitch
Players 7 and 8 years old as of January 1st of the calendar year
Some girl pitch, some coach pitch
Players 9 and 10 years old as of January 1st of the calendar year
Girl fast pitch, some coach pitch
Players 11 and 12 years old as of January 1st of the calendar year
Girl fast pitch
Players 13 - 15 years old as of January 1st of the calendar year
Girl fast pitch

Keep a copy of the rules in your team bag! (page #s below)

15u: pp 1-5 & 6-7

12u:  pp 1-5 & 8-10

10u: pp 1-5 & 11-15

8u: pp 1-5 & 16-18

6u: pp 1-5 & 19-21

Read the rules - Know the rules.

Marin Tremors Summer and Fall Ball Schedule

We haven’t even started the Rec League Softball season yet, so why are we talking about Summer and Fall Travel Ball???

Well, like you, many of us are currently planning our summer vacations, so we felt it might be good timing to let you know when the Tremors Summer Ball and Fall Ball programs will be running.  We’ve been contacted by numerous parents, who would love to know, so they can schedule vacations that don’t conflict with the season.

In 2018, we will be fielding at least one travel ball team for 8U, 10U, and 12U.   We will be fielding Club Ball teams for 8U and 10U.

In addition, there are some other important dates to start planning around in 2018.  Click here to get the season schedule.