Marc R. Pollack, Esq. and Ryan Gleichowski founded Sports One Athlete Management in 1999. Prior to that, Marc was a successful NFL agent and attorney and Ryan was a Division I baseball player at the University of Florida. When joining forces, the vision was to build a full-service sports agency that would provide the highest level of service in the industry catering to a unique type of player. The goal was to represent athletes that possessed the same level of character, integrity and work ethic that both Marc and Ryan displayed in all aspects of their lives. Their belief was that these were the key ingredients needed to succeed in all aspects of life, and particularly in the highly competitive world of professional sports. Building upon this model has enabled Sports One to represent some of the top players in Major League Baseball.

The diverse background and expertise that Marc and Ryan bring to the table makes Sports One an extremely well-rounded organization that is suited to handle every aspect of a professional baseball player’s career. They have achieved success in every area in the industry including the draft, developing minor league players, prevailing in the salary arbitration process, negotiating top salary arbitration settlements and procuring top multi-year pre-arbitration and free agent contracts. They have also been extremely successful in the marketing and endorsement arena helping to maximize their client’s earnings, not only on the field, but off the field as well. Additionally, they work extremely hard to assist their clients in "giving back" by playing a significant role in each of one of their charitable organizations and fundraising efforts.