Tosa Baseball League

09/11/2025

⚾ We’re excited to announce that early registration is now open for the 2026 season! As a special thank you, all families who register early will receive a $𝟐𝟓 𝐝𝐢𝐬𝐜𝐨𝐮𝐧𝐭 per player.

In addition, we’re thrilled to share a first in league history — the launch of a 𝐂𝐨-𝐄𝐝 𝐓𝐞𝐞-𝐁𝐚𝐥𝐥 𝐋𝐞𝐚𝐠𝐮𝐞 for all 4-, 5-, and 6-year-olds! This new program is designed to provide a fun, inclusive, and exciting start to the game of baseball for our youngest players.

We also have a unique offer: if your child is currently registered in any other tee-ball league program, they can play in our Tee-Ball League for free! Simply email a copy of your paid receipt to [email protected], and we’ll take care of the rest.

We believe our Tee-Ball program will offer a more fun, engaging, and rewarding experience for all players — and we can’t wait to see everyone on the field!

Register Today: https://www.teamsideline.com/sites/tosabaseball/home

Thank you for being part of our baseball community. Let’s make the 2026 season our best yet!

The Tosa Baseball League has a proud tradition of over 50 years of teaching our kids the fundamentals of baseball and fast pitch softball in a positive and fun environment that emphasizes sportsmanship between players, coaches, umpires and families.

04/09/2024

This is the LAST WEEK to register for the 2024 season. Tosa Baseball League and Tosa Fast Pitch are open to boys and girls ages 6-14. Register here: https://www.teamsideline.com/sites/tosabaseball/home.

03/01/2024

Registration is underway for the 2024 season! Tosa Baseball League and Tosa Fast Pitch are open to boys and girls ages 6 -14. Register online now through April 14: https://www.teamsideline.com/sites/tosabaseball/home.

The Tosa Baseball League has a proud tradition of over 45 years of teaching our kids the fundamentals of baseball and fast pitch softball in a positive and fun environment that emphasizes sportsmanship between players, coaches, umpires and families.

03/11/2021

We are excited to be partners with DICK'S Sporting Goods. As part of their support, DICK’s Sporting Goods will be hosting a 20% off shop event for all Tosa Baseball & Fastpitch participants, followers, and supporters at the Wauwatosa store on 3/12 – 3/15/2021.

The discount is valid on purchases STOREWIDE! If you can't find an item in the store, ask a sales associate to help you order it, and still receive 20% off.

Present the coupon at the register to redeem this special offer! The coupon can also be downloaded and displayed from your mobile device.

08/31/2018

Thanks LifeWise for proudly sponsoring Tosa Baseball League!

Our Products SimplyWise Flavor Systems – optimizing taste, improving nutrition, and creating cleaner labels. Read More What We Do Transform your flavor challenges into delicious. Read More The LifeWise Difference Trust. Drive. Dedication. Read More…

08/29/2018

Check out these swing techniques for young hitters.

Help young hitters make consistent contact and employ proper plate coverage with these hitting tips from the eteamz baseball community.

08/26/2018

On this day we recognize the Anniversary of the First Televised Baseball Games. Today in 1939, WXBS television, New York City, broadcasted the first major league baseball games – a doubleheader between Cincinnati Reds and the Brooklyn Dodgers at Ebbets Field. Announcer Red Barber interviewed Leo Durocher, manager of the Dodgers, and William McKechnie, manager of the Reds, between games.

08/24/2018

Thank you Riedel Sports, Inc. for being a sponsor of Tosa Baseball League!

Riedel Sports, Inc. 7945 Harwood Avenue Wauwatosa, WI 53213 414.607.6584 Scott Riedel, President ​Mandi Riedel Weber, Office Manager & Director of Online Sales Business Hours: Monday through...

08/23/2018

Save $20 per player when you register early for the 2019 Tosa Baseball League summer season! Simply sign up before September 1, 2018 to take advantage of this offer.

08/22/2018

Learn about the six food rules all young athletes should follow.

Six food rules young athletes need to know to fuel properly

08/20/2018