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Yauhen Massalski
Athlete · Builder · Showman

Yauhen Massalski

Still on the court. Already in the boardroom.

Pro Basketball — France NBA Summer League G-League Union Leader All-WCC
Belarus to NBA / G-League Union Secretary-Treasurer / First CBA Negotiated / Currently Pro in France / They Call Him "Squirrel" / Building Brands Between Games Belarus to NBA / G-League Union Secretary-Treasurer / First CBA Negotiated / Currently Pro in France / They Call Him "Squirrel" / Building Brands Between Games Belarus to NBA / G-League Union Secretary-Treasurer / First CBA Negotiated / Currently Pro in France / They Call Him "Squirrel" / Building Brands Between Games

The Negotiation

Negotiated the first Collective Bargaining Agreement in G-League history.

As Secretary-Treasurer of the G-League Players Association during his time with the San Diego Clippers, Yauhen led the charge that changed the game for hundreds of professional athletes. Not just a player — a leader who fought for what mattered.

4.7%
Salary Increase
$45K
Min Salary
1st
Multi-Year CBA
30+
Teams Covered
Yauhen at business event
Secretary-Treasurer, G-League Players Association

The Journey

Every chapter wrote
the next one.

1999

Belarus Beginnings

Started in Minsk. Picked up a basketball young and never put it down. The path from Eastern Europe was just getting started.

Early career
2010

Rytas Vilnius

Moved to Lithuania at 17 to join the Rytas Vilnius youth academy. Four years competing against the best young talent in Europe.

Rytas Vilnius
2014

USD "Squirrel"

Came to America. Earned the nickname at the University of San Diego for relentless energy. The hustle that defined a career was born here.

USD basketball
2015

USF All-WCC

Transferred to USF. Named All-WCC. Proved the Belarusian kid could compete at the highest level of American college basketball.

USF basketball
2016

Jazz Summer League

Invited to the Utah Jazz NBA Summer League roster. Competed against future NBA stars on the biggest stage.

Utah Jazz
2018

Austin Spurs

Signed with the Austin Spurs in the NBA G-League. Played the Spurs Summer League. Started rising through the Players Association.

Austin Spurs
2019

SD Clippers & Union

Signed with the San Diego Clippers. Elected Secretary-Treasurer of the G-League Players Association. Negotiated the first CBA in league history.

San Diego Clippers
2026

France & Beyond

Playing pro ball in France. Building brands between games. The court and the boardroom at the same time.

France

The Ventures

Building off the court.

Not just a player with a side hustle. Real companies, real customers, real revenue.

Live
GMMY website
D2C Vitamins

GMMY

Vegan gummy vitamins. Pectin-based, made in the USA, under $1/day. Vitamin C, B12, Multivitamin, and the Triple Boost bundle. Live at gmmy.com with real customers ordering daily.

4 SKUs Live
Visit gmmy.com →
Coming Soon Pet Health

YUMM

Premium dog vitamin supplements. Best athletes take care of their whole squad. In development.

Active Player Advocacy

G-League Union

Secretary-Treasurer. Negotiated the first CBA in league history. Changed the game for hundreds of players.

1st CBA in History
Active Venture Capital

Next Legacy VC

Investing in next-gen founders. Backing builders who think differently.

Live Agency

Marathabitat

Digital agency building brands, websites, and marketing systems that convert.

Active Consulting

AI Automation

Helping businesses implement AI workflows that save time and scale operations.

Yauhen Squirrel Massalski

The Nickname

"Squirrel"

They didn't call him Squirrel because he was quiet. Relentless energy. Never stops moving. Makes everyone on the court work harder just to keep up. That same energy fuels everything he builds.

Relentless Resourceful Unpredictable Fearless All Hustle

The Portfolio

Brands I'm building.

Not side projects. Real businesses, live customers, shipping product.

gmmy.com
GMMY.com website

Founder & CEO

GMMY

Vegan gummy vitamins. Pectin-based, made in the USA, lab tested. Vitamin C, B12, Multivitamin, and the Triple Boost bundle.

Visit gmmy.com →
yumm.com
YUMM website

Founder

YUMM

Premium dog vitamin supplements. Because the best athletes take care of their whole squad. Currently in development.

For Brands

Let's build something
together.

Authentic partnerships with brands that match the energy. Not just endorsement — collaboration between builders.

01

Content Creation

Professional athlete lifestyle content for social, web, and campaigns.

02

Brand Ambassadorship

Long-term partnerships with products I believe in.

03

Speaking & Events

Keynotes and panels on entrepreneurship, sports, and building businesses.

04

AI Consulting

Helping brands integrate AI into operations and product.

Del Mar
Anta shoot
Mustang
Casual
Del Mar
SportRX

Let's
talk.

Direct

Agent

Michael Lelchitski
SIG Sports

Social