Mentorship | Character Building


Teamwork | Character Building

Character Building

Teamwork | Mentorship

Developing Successful Players and Even More Successful Individuals

Trevian Girls Softball Association teaches juniors to 18U girls basic, intermediate and advanced softball skills, which they are able to practice in league play and competitive tournaments. The Trevian Girls Softball Association (TGSA) experience provides players with the knowledge of the game required to play at the high school level and beyond.

Over the years, TGSA has afforded many of our players the opportunity to be recruited by top colleges.

Most importantly, participating in our programs helps young girls grow as individuals and team players – on and off the field – and gives them core life skills they will treasure and utilize forever.


Through softball, we teach responsibility, teamwork, work ethics, and self-esteem so our players can grow to be confident, successful individuals.


Thanks to our team training, private coaching, workshops, and skills clinics, many Trevian players go on to have very successful softball careers at top colleges.


Many of our alumnae come back to offer leadership and mentoring to younger players. This is a testament to the impact the program has made on their lives.

2018 Trevian Tournament Registration Now Open!

Trevian Girls Softball Association would love for your team to join us in celebrating the 28th Anniversary of our Annual Father’s Day Classic.  This year’s tournament will take place June 14th-17th, 2018.   Games will be played at Howard Park in Wilmette and at Willow Park in Northfield.

As in the past, we will have a bracket for developing 10U teams. The Bronze Bracket provides a great opportunity for a younger team to experience the fun of a tournament with similar skilled competition.

For 10U, please note on your registration if you would like to be considered for our Bronze Bracket, which is reserved for younger and developing teams.

Ages: 10U, 10U Bronze, 12U, 14U with a 4 game guarantee for all age groups

Register at:

Tournament Fee: Early Registration (12/19/17 – 2/11/18) – $525 per team. Spots are not guaranteed until payment is received.  Your payment must be received within two weeks of registration otherwise we cannot guarantee your spot until payment is received. (Note – Registration fees increase to $550 on 2/11/18. Registration closes on 4/13/18)


TGSA NEWS: Alyssa Aragon Commits to North Park University!

Congratulations to 18U Trevian Alyssa Aragon on committing to play softball at North Park University!

TGSA NEWS: Emily Pater Commits to Kenyon College

Congratulations to 18U Trevian Emily Pater on committing to play softball at Kenyon College!

Colleen Palczynski commits to Illinois Wesleyan University

Congratulations to 18U Trevian Colleen Palczynski on committing to play softball at Illinois Wesleyan University!


Trevians 18 won the Heartland Series 18U A level ASA/USA Softball National Qualifier Championship in Elgin and has earned a bid to Salem, VA next summer.


Trevian Alumna and Lake Forest College Softball player, Jenny McTague was named Midwest Conference Woman of the Year and the league’s NCAA Woman of the Year.


Congratulations to Trevian Alumnae Laura Bagan, Courtney Grasz, and Lauren Secures on being named to DIII All-Region teams! Play TGSA…Play NCAA!


Winter Clinic Ages 6-10

A fun, age-appropriate session for girls in the North Shore area.

All experience levels welcome, beginners included. Taught by current Trevian softball players.

WHEN: Dec. 27 and Dec. 29 |  2:30pm-4:00pm

WHERE: Illinois Baseball Academy/The Yard - 164 Northfield Road, Northfield, IL 60093

COST: $20 for one session; $30 for both


Get to know Trevians’ talented 16U and 18U players and come see them play at upcoming games.


Tryouts for Trevian 12U, 14U, 16U, and 18U teams. We recommend attending 2 tryouts if possible.

When: August 2018 (dates TBD)  |  Where: 401 Wagner Rd., Northfield, IL


Willow Park

401 Wagner Road, Northfield, IL 60093 (Map)

Field Conditions

Howard Park

17th St & Howard Park Dr, Wilmette, IL 60091 (Map)

Field Conditions

Diamond Instincts

600 Waukegan Road, Northbrook, IL 60062 (Map)

Indoor Field


Trevians 18U Team at the Pennsbury Invitational (June 2017). Relive the trip!
Player Spotlight: Lauren Caldrone, Class of 2018, Prospect High School (Mount Prospect)


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