Priority International


Mark Bartelstein

Mark Bartelstein

Priority Sports & Entertainment was founded in 1985, and in the 30+ years the agency has been in business, CEO Mark Bartelstein has earned a reputation for being innovative and forward thinking in his approach to representing professional athletes. The firm has established itself as an industry leader by developing core values of integrity, hard work, and a steadfast resolve to always put their clients first. Priority Sports has received consistent acclaim over the years by maintaining a company-wide entrepreneurial spirit that exists within each department – Basketball, Football, Marketing & PR, and the newly founded Coaches & Broadcasters division.  This approach has laid the foundation in creating the culture throughout the history of Priority Sports & Entertainment and has led to constant and steady growth throughout the existence of the agency, from inception to today. The agency is widely regarded throughout the business and sports industries as the leading independently owned agency representing professional athletes and has consistently been ranked accordingly in countless national media outlets.

Based on his familiarity with the intricacies of the Collective Bargaining Agreements in both the NBA & the NFL, Mark has helped his clients secure many landmark contracts and is often asked to speak on his experience in these negotiations, as well as the journey that Priority Sports has taken to the top of the sports business world. Mark graduated from the University of Illinois with a Bachelor’s Degree in Business Administration. He earned a Master of Business Administration from Northwestern University’s Kellogg Graduate School of Management in 1984. He and his wife Sheri have four children (Josh, Morgan, Courtney, and Kirby) and reside in Highland Park, Illinois.

Andy Shiffman

Andy Shiffman

Andy Shiffman joined Priority Sports after two seasons with the University of Memphis Tigers men’s basketball team as a video coordinator and statistical strategist, before practicing as an attorney in Memphis. Andy also worked for the Memphis Grizzlies, New York Knicks, and Milwaukee Bucks. As Priority Sports’ Executive Vice President of Basketball Representation, Andy assists in the day-to-day management of both NBA and international clients, and utilizes his legal background in drafting and analyzing FIBA arbitration cases. An NBPA-certified player-agent, Andy also oversees the travel accommodations and draft workout scheduling for NBA draft prospects, is heavily involved with statistical analytics, the Draft, and Free Agency, and manages the placement of players throughout Europe, China, and Australia. Andy graduated from Indiana University with a Bachelor’s Degree in Kinesiology. He earned a JD from Marquette University Law School, specializing in sports law. Andy currently resides in downtown Chicago.

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Patrick King

Patrick King

A forward who played professionally in Europe for nine years, Patrick is an integral part of Priority Sports’ basketball division as our Director of International Operations.  A tireless worker who speaks three languages, he has spent more than fifteen years developing and cultivating one of the most extensive networks in the European basketball industry. Coaches and general managers in each of the premier markets on the continent trust his evaluations of players and value his honesty as well as his knowledge of the European market.  Patrick has negotiated hundreds of lucrative contracts spanning all of the major competitions in Europe including numerous deals with Euroleague, Eurocup, and EuroChallenge teams.  In coordination with our central office in Chicago, Patrick closely markets and manages all Priority Sports clients in Europe from Priority Sports’ European headquarters in Bonn, Germany.  He is on the road every week visiting clients at practices and games during the season.  He has numerous contacts in the U.S. and uses them to aggressively promote our clients to NBA personnel.  Patrick resides with his wife Alexandra and children Henry and Lilian in Bonn, Germany.