Jimmy Butler watching the play with his hands on his hips.

Quartexx Basketball

About Quartexx Basketball

We build more than a career

At Quartexx Basketball we are committed to supporting and guiding our clients from the beginning of their career all the way through and after retirement. We have a strong reputation for providing complete support to our players with a personalized approach. 

Quartexx Basketball understands that every player's story is unique and it is our mission to find the right path to help each one of our clients reach their full potential, both on and off the court. We pride ourselves on combining our detail-oriented approach with our passion for what we do and knowledge of the business, which helps earn the trust of our athletes and their families as we help them achieve their goals.

Our athletes' success speaks for itself

By the numbers
  • $1B+

    In contract negotiations

  • $50M+

    In marketing agreements

  • 3000+

    NBA games played

Our current clients

  • Jimmy Butler

    #22 / Heat

    Jimmy Butler

    Meet Quartexx Athlete
    Number
    #22
    Team
    Heat
    Position
    fwd
    Birthday
    9/4/1989
    From
    Tomball, Houston

    Career accomplishments

    • Five-Time NBA All-Star

    • Three-Time All- NBA Third Team

    • Four-Time NBA All-Defensive Second Team

    • 2015 NBA Most Improved Player

  • Justin Holiday

    #8 / Pacers

    Justin Holiday

    Meet Quartexx Athlete
    Number
    #8
    Team
    Pacers
    Position
    fwd
    Birthday
    4/5/1989
    From
    Mission Hills, CA

    Career accomplishments

    • 2015 NBA Champion

  • Isaiah Thomas

    #24 / Pelicans

    Isaiah Thomas

    Meet Quartexx Athlete
    Number
    #24
    Team
    Pelicans
    Position
    def
    Birthday
    2/7/1989
    From
    Tacoma, Washington

    Career accomplishments

    • Two-Time NBA All-Star

    • 2012 All-NBA Second Team

    • 2012 NBA All-Rookie Second Team

  • Sheldon Mac

    #10 / Charge

    Sheldon Mac

    Meet Quartexx Athlete
    Number
    #10
    Team
    Charge
    Position
    fwd
    Birthday
    12/21/1992
    From
    Houston, Texas

    Career accomplishments

    • 2016 Second-team All-ACC

Quartexx basketball team

Meet our team
    • Bernie Lee

      President

      Bernie Lee, President of Quartexx Basketball, has worked in basketball representation for the last 17 years. Based in Toronto, Canada, Bernie is recognized as one of the sport's most preeminent All-Star agents. Most recently, Lee has negotiated deals for Jimmy Butler, Justin Holiday and Isaiah Thomas.

    • Kirsten Simmons

      NBA Certified Agent & Client Manager

      Kirsten is an NBPA-certified agent, who has spent several years supporting players all over the globe. Also based in Toronto, Canada, Kirsten prides herself on the relationships she has built with clients, coaches and front office personnel worldwide.

    • Adam Dionisopoulos

      Legal Counsel & Client Manager

      Adam is a licensed attorney in both Florida and New York and a graduate of the University of Miami School of Law where he earned his J.D. as well as an LL.M. in Entertainment, Arts, and Sports Law. He has worked in basketball for several years and has a passion for working on players' behalf, both as a former university Assistant Coach, as well as an attorney with THINK450, the NBPA for-profit marketing arm. Adam is based in Miami, Florida.

    Quartexx basketball services

    Jimmy Butler and Bernie Lee smiling together

    We have a reputation for providing complete support and are committed to supporting clients throughout their career with the best service in the industry.

    • Contract negotiations

    • Pre-draft preparation

    • Public relations, marketing & endorsements

    • Charity & community involvement

    • Client services

    • Post-career management