Jonathan Feinsod is an NFL Players Association (NFLPA) Certified Contract Advisor and veteran sports agent with AMDG Sports, a football representation agency focused primarily on offensive line athletes. Certified by the NFLPA since 1994, he brings more than three decades of experience in NFL player representation, specializing in contract negotiation, career counseling, endorsement management, marketing, and long-term player development. Based in New York, Feinsod has built his career around helping athletes navigate the business side of professional football with a strong emphasis on preparation and informed decision-making. At AMDG Sports, Feinsod serves as a lead contract negotiator within an agency structured around athlete education and empowerment. The firm emphasizes giving players a deeper understanding of the business of football so they can actively participate in maximizing their own value. His role includes guiding clients through contract structures, free agency decisions, and long-term career strategy while working within a collaborative team that supports offensive linemen from college through their professional careers. Over the course of his career, Feinsod has represented and negotiated contracts for NFL players across multiple positions and experience levels, working within an agency environment that has produced numerous active NFL contracts. His experience includes involvement in both veteran contract negotiations and rookie deals, reflecting long-standing relationships within the league and consistent engagement with front offices and team personnel.