Trevian Girls Softball Association


The TGSA was originally established in 1980 to provide a top quality softball program for girls residing in the New Trier Township. The organization has since evolved to welcome players from neighboring and nearby communities as well. TGSA strives to maintain a strong base of community players in the organization, while also opening its doors to players from nearby areas seeking a top quality softball program.

TGSA is a non-profit organization run primarily by parent volunteers.  Through participation in the Trevian program, its players learn responsibility, hard work, teamwork and how these things add up to group success. Trevian players also build self-esteem and the confidence to take on difficult challenges later in life.

To find out more about TGSA explore the "About" tab at the top of our homepage.


Trevian News...

Registration for the Trevian Juniors Spring/Summer Program is now open! Please visit the 'Registration' tab on the homepage to register today!

The Trevian Juniors program is for girls ages 6-10 in the North Shore area.  The program is overseen by our Player Development Committee and led by experienced softball coaches and High School and College Trevian players. Our emphasis is on skill development and having fun while learning and playing softball. 

Juniors Spring/Summer Session

  • Players age 6-10
  • Dates –May 14th -  June 18th,  Sundays 130-3pm and Tuesdays 430-6pm *No session May 28
  • Program is designed to teach softball skills, team skills, and athleticism.
  • Program’s #1 goal is to have fun! 
  • Cost is $200 (includes jersey)

*All girls will participate in the first two weeks of the Juniors Spring Session.  After two weeks, the 9u team will be formed and will continue to attend the Juniors sessions. In addition, the 9u team will have an additional team practice on Fridays in June. Girls that were not selected or those who did not wish to be part of the 9u team will continue in the Juniors sessions together.

We are very proud to announce that Alicia Bagan will continue her fastpitch career in college as a member of the University of Rochester Yellowjackets! Join us in congratulating her and celebrating her great accomplishment. Go Trevs!

Congratulations to Gillian Gossard of the 18U Trevians team on her acceptance to Case Western Reserve University to play collegiate softball for the Spartans!

Please join us in congratulating Gillian and celebrating this great accomplishment. 

Thank you to Tammy Williams and all the TGSA players, coaches, and parents who joined us on Wednesday, December 14th for a GREAT mental skills and softball workshop! Tammy gave a wonderful presentation, and shared helpful insights and tips for our teams to incorporate into their softball repertoires. Thank you again for sharing a special night with our organization!

Trevian Father's Day Classic: 


Register today...we are capping registration at 16 teams per age group!

Tournament Dates June 15th-18th, 2017

Location: Games will be played at Howard Park in Wilmette and at Willow Park in Northfield.

Ages: 10U-14U with a 4 game guarantee for all age groups

10U Developmental Bracket!! We are again offering a bracket for developing 10U teams. The Bronze Bracket will provide a great opportunity for a younger team to experience the fun of a tournament with similar skilled competition.

Tournament Fee: EARLY BIRD REGISTRATION $525 12/15/16 - 2/15/17

Regular Registration - $550 2/15/17 - 4/17/17

Please visit the 'Registration' tab on the homepage to register your team.

Please make checks out to TGSA and send to:

Kelsey Lee

807 Davis Street Unit 302

Evanston, IL 60201

For more information contact: 

If payment is not received within 2 weeks of your registration, you will be notified that we cannot guarantee your spot until payment is received.

TGSA is very proud to announce today that Hannah Contreras will continue her fastpitch career in college as a member of the Cornell University Big Red! Contreras is a member of our Trevians 18U team. Please join us in congratulating her and celebrating her great accomplishment. Go Trevs!


Trevian Juniors Winter Clinics!

TGSA is holding Winter Clinics for girls ages 6-10. Girls who are new to softball as well as those with softball experience are invited to attend for a fun clinic that will help them further learn and play the game of softball.   Current and Former Trevian players will teach your girls during these fun age appropriate sessions. 

Wednesday 12/28 1-2:30pm


Friday 12/30 1-2:30pm

The Yard - 164 Northfield Rd, Northfield 

 The cost is $35 for the 2-day clinic.

To register, please click the 'Registration' tab on the home page.

Please contact with any questions.


14 Blue Takes 4th at States

On Friday, July 8, the Trevian Blue 14U team traveled to Peoria to compete in the USSSA “B” State Championships, coming away with 4th Place.  After going 1-1 in pool play on Friday, the Trevians started slow in the double elimination tournament – dropping their first bracket game to Oly Fire.  But the Trevs were able to bounce back and win the next four elimination games.  The Trevians beat the Illinois Sluggers (10-2), the Illinois Valley Aftershock (7-6), and the Henry County Hurricanes (6-4).   In the fifth game of the day on Saturday, the Trevians knocked out tournament favorite, the Big Muddy Lunachicks, 11-3, with eight Trevian players combining for 15 hits in the contest. The win over the Lunachicks allowed the Trevians to advance into the final four on Sunday, ultimately losing their sixth bracket game 3-1 to Oly Fire.


12U Blue Runners-Up at Spartan Classic

After overcoming early setbacks during pool play, Anna Kasper's 12U Blue squad marched through bracket play and earned a runners-up finish in the Gold Division at the Spartan Classic Fastpitch Softball Tournament. The team swept through their first three bracket play games with a decisive 11-4 victory over the Park Ridge Pistols Blue, a hard-fought 10-8 win over the Grayslake Pride Black, and a solid 5-2 victory over the Huntley Red Raiders.  The girls were upended in their quest for the championship when they fell 10-6 to the Park Ridge Jr. Hawks on 6/26/16.  Despite falling short of achieving their team goal, the girls were thrilled with their runners-up finish and thoroughly enjoyed the overall tournament experience.  The deep run in Northbrook should give the 12U Blue girls added confidence as they tackle the back half of their 2016 season.


14U Blue Squad Strikes Again

The 14U Blue team went undefeated and took first place in the Green Division at the Spartan Classic Fastpitch Softball Tournament. The Trevs' speed and power were put on display throughout pool play and early bracket play games, as they outscored their opponents by 8 runs per game.  Through the first 5 games, the offensive attack was led by Claire VanDamme, Keeley Utz, and Bailey Williams. Stellar pitching performances were turned in by all 4 Trevian pitchers, including Beth Fisher, Hanna McDermott, Ria Patel, and Emmie Lacaeyse. 

Sunday's championship game against the Huntley Red Raiders was dramatic and exciting.  After giving up 5 runs early and trailing through 4 innings, the Trevians began chipping away at the lead by scoring one run in the bottom half of the 5th inning.  Then, in the 6th , Rachel Rane blasted a 2-out, bases-loaded triple to bring the Trevians within 1 run.  The girls were able to build on the momentum in the bottom of the seventh and plated two runs on a walk-off single by Brianna Reed.  The Trevians' 6-5 championship victory over Huntley in Northbrook was the 3rd tournament title of the summer season for the 14U Blue team.  

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