MassBox Lax Logo

MassBox Lax Logo


Recognizing that Massachusetts and New England needed a Box lacrosse-centric training facility, MassBoxLax was born with the goal of fostering and developing the game in a premier state of the art facility.  Boston Sports Institute, (BSI) centrally located on Rte 9 in Wellesley, opened in June 2019, and MassBoxLax  offers training and leagues for youth, high school, and collegiate players. 

The goal is to keep lacrosse community based so MassBoxLax will work closely with Mass Youth Lacrosse(MYL) for girls and boys youth lacrosse programming in our area.  

High School Indoor League - Starts January 2023

Sign up with your high school teammates or join as a free agent.  The season starts January 8th, and games are played on Sundays between the hours of 5 - 9 pm. 

7 Sessions:   January 8, 15, 22, 29; February 5, 12, 26; March 5.  Cost is $360.

Grades 9 - 12 are welcome.

Middle School - Grade 5-8th Winter Box League

Mass Youth Lax is excited to provide an opportunity for Middle School players to participate in a box lacrosse league in the metro-west area. Weekly sessions include a 15-minute training session learning new box lacrosse concepts, followed by a 45-minute game against another team within the league. 

Grades: 5th - 8th. 

5th/6th play Friday nights and 7th/8th can play Friday or Monday nights.

Friday nights:  January 6, 20, 27; February 3, 10.  

Times: 5th/6th Grades 7 - 8 pm;    7th/8th Grades 8 - 9 pm.

Monday nights: 7th/8th Grades, 8:30 - 9:30 pm. December 12, 19, 26; January 2, 9, 23, 30; February 6, 13. 

Cost: $180/player for 9 sessions

Fakes & Finishes Clinics

Thursday Night Fakes & Finishes with Coach Jim 7-9pm. January 19, 26 Feb 2, 9 and 16.

7-8pm for Grades 5-8th. 8-9pm for High School Players.

Lax Coach Connolly Training

Coach Connolly Training Sessions

Train with Coach Jim Connolly, former MLL Pro All Star

 Register here to stay updated to training opportunities 

Latest News

Grades 1 - 4 Speedball

Sunday 8 - 9 am, Speedball!

Pick up games and some instruction - grab your friends and come play!

Dates: January 8, 15, 22, 29; February 5, 12, 19, 26.

Cost $180 for 8 sessions or $25 drop in per session

Questions - please email

Register Here 

What Box Lacrosse is available for Winter 2022-23?

After offering high quality High School programming for the past few years, we are expanding to younger ages this season as box lacrosse grows in MA! We now offer leagues, small group training and competitive tournament teams for 5th grade to high school age players.

Middle School: Mondays 8:30-9:30 pm Box League- Register for whole season or $25 drop in per session.

5th - 8th Grades Friday Night Box League: 7-8pm Grade 5/6, 8-9 pm Grade 7/8. Register for all sessions or $25 drop-in per session.

High School Sunday Night Indoor League: 5-9 pm. Starts Jan 8th, Free Agents welcome.

5th - 12th Shooting Clinics with Coach Connolly: Thursdays, Middle School 7- 8 pm, High School 8 - 9 pm.

Box Tournament Teams: Our tournament teams for grades 5-12th will play Jan 7/8 in Albany and Jan 22 in Acton/Canton MA.This is for the competitive player that loves lacrosse and wants to improve all aspects of their field game by practicing and playing fast paced box lacrosse against other teams from Upstate NY and New England.

Small Group training available as well if interested. Email us at with questions

The importance of Thank You

Adam Pascal only barely hears Bill Tierney’s “important guest speaker” introduction.

He’s about to share his most heart-crushing and uplifting truth with a ballroom full of the men he has always dreamed of being.  Emotions flood, breathing accelerates as he steps up to the terrifying and life-renewing opportunity he’s worked hard to create on this Friday morning in early December at the IMLCA Convention general session in Orlando.  

Adam arranges his notes. He makes eye contact with lacrosse people in a way he’s been hesitant to for much of the past three years. Full story at below link.....


We regularly update our instagram account and will upload photos here.  Watch the training and see what we do!


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