San Mateo Little League American (SMLLA)

San Mateo Little League American (SMLLA) Youth baseball league for players ages 4-14 in addition to adult volunteer opportunities Welcome to San Mateo Little League American! of Williamsport, P.A.

For over 55 years we have brought the great game of baseball to the youth of the San Mateo and Burlingame. Every year we have approximately 500 players swinging bats, throwing & catching balls, making new friends, seeing old friends and keeping Trinta Park filled with the neighbors in our communities - enjoying one of our nation's favorite pastimes. We are proud of the tradition SMLLA continues ea

ch Spring and will work hard to make sure it endures well into the future for our neighborhoods. SMLLA is chartered under the Little League Inc. and is subject to all rules and regulations contained in their Official Rule Book.

Congrats to our 10U All-Stars on winning the BYBA Tournament championship this weekend! 🏆 The boys outlasted the 10U Bur...
06/15/2026

Congrats to our 10U All-Stars on winning the BYBA Tournament championship this weekend! 🏆 The boys outlasted the 10U Burlingame Red team in a tightly contested 12-10 win in extra innings. Great job and keep it rollin’!

Busy weekend ahead for our San Mateo American All Stars! ⚾️⭐️ check out the schedule for our upcoming games.Our Minors a...
06/11/2026

Busy weekend ahead for our San Mateo American All Stars! ⚾️⭐️ check out the schedule for our upcoming games.

Our Minors and Majors Super Bowl teams will be in action all weekend, while our D52 13’s take the field on Saturday. Come on out and show your support for the boys!

Good luck to all of our players and coaches. Go compete, have fun, and represent San Mateo American with pride!

Good luck to our 9U Superbowl team tonight as we take on Palo Alto LL at Martens Field. First Pitch is at 5:00PM! ⚾️
06/10/2026

Good luck to our 9U Superbowl team tonight as we take on Palo Alto LL at Martens Field. First Pitch is at 5:00PM! ⚾️

06/02/2026
🏆 D52 Spring Season Juniors 60/90 Champs! Congratulations to the players and coaches on an incredible season. Way to wo...
06/01/2026

🏆 D52 Spring Season Juniors 60/90 Champs! Congratulations to the players and coaches on an incredible season. Way to work! ⚾️🔥

Congrats to the White Sox who prevailed in a tightly fought cross-town battle vs. the SMNLL Astros to take home the 2026...
05/30/2026

Congrats to the White Sox who prevailed in a tightly fought cross-town battle vs. the SMNLL Astros to take home the 2026 City Cup Championship by a score of 4-2.

Great pitching and defense by both teams and a great night of baseball in San Mateo

Proud of our San Mateo American 8U squad. In their first season together and first tournament ever, they battled all the...
05/28/2026

Proud of our San Mateo American 8U squad. In their first season together and first tournament ever, they battled all the way to the Gold bracket championship and finished as tournament runner-up in the Foster City Memorial Tournament.

Congratulations boys! We’re just getting started! ⚾️

⚾️ SAN MATEO AMERICAN CLOSING CEREMONY ⚾️Join us Saturday, May 30th at Trinta Park as we celebrate an amazing season tog...
05/27/2026

⚾️ SAN MATEO AMERICAN CLOSING CEREMONY ⚾️

Join us Saturday, May 30th at Trinta Park as we celebrate an amazing season together! ❤️💙

🏆 Single A – Majors Divisions
⏰ 9:00 AM – 10:00 AM

• Regular season winners will receive t-shirts
• Playoff champions will receive championship rings 💍
• We’d love ALL players to attend and be part of the division photo at home plate 📸
• We’ll also recognize our Interleague and Summer All-Star teams ⭐️

🎉 Wiffle Ball & Tee Ball Celebration
⏰ 10:00 AM – 12:00 PM
📍 Trinta South

We’ve got a fun-filled morning planned including:
⚾️ HR Derby (Wiffle Ball style!)
🏃 Fastest Around the Bases
🏰 Bounce House
💦 Water Balloon Toss Finale
🌭 Free snack shack entrée for every player
🥇 Medals for all players

Hope to see you there!!

Part 2 ❤️⚾️More of our SMLLA Class of 2026 “Then & Now” transformations.From tiny uniforms and tee-ball swings to Majors...
05/27/2026

Part 2 ❤️⚾️

More of our SMLLA Class of 2026 “Then & Now” transformations.

From tiny uniforms and tee-ball swings to Majors baseball on the North Field… this group has given us so many unforgettable moments over the years. Championships, friendships, walk-offs, snack shack dinners, dusty uniforms, and memories that will last far beyond Little League.

Thank you to this incredible group of players and families for helping make Trinta feel like home.

📣 Upcoming SMLLA Events:

⚾ City Cup Championship
SMLLA White Sox vs. SMNLL Astros
Friday, May 29 | 5pm | Trinta Park

🏆 Closing Ceremonies
Saturday, May 30 | 9am–10am | Trinta Park

🎉 Tee-Ball & Wiffle Ball Year-End Celebration
Saturday, May 30 | 10am–12pm | Trinta Park

🔥 12’s Party
Sunday, May 31 | 11am–4pm | Trinta Park
Featuring the Home Run Derby, Golden Arm competition, Roadrunner challenge, food, and one final day together at Trinta for our graduating 12’s.

12’s families: Please RSVP if you haven’t already!

⭐️ 2026 SMLLA Interleague All-Stars ⭐️Congratulations to all of our players and coaches! Thank you for your effort and ...
05/23/2026

⭐️ 2026 SMLLA Interleague All-Stars ⭐️

Congratulations to all of our players and coaches! Thank you for your effort and dedication this season ⚾️

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San Mateo, CA

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