Chase Callahan is an NFLPA-certified Contract Advisor and Co-Head of Football at Excel Sports Management, where he oversees NFL player representation, contract negotiations, and football operations. According to the National Football League Players Association (NFLPA), Callahan has been certified as a Contract Advisor since 2009 and has negotiated dozens of NFL player contracts during his career. He is based in Irvine, California, and is part of Excel's leadership team within its football division. Before joining Excel Sports Management, Callahan served as President of Football at REP 1 Sports, a prominent football agency known for representing NFL players and securing high-profile contracts and draft placements. In 2023, REP 1 Football was acquired by Excel Sports Management, and Callahan transitioned into his current role as Co-Head of Excel Football alongside REP 1 co-founder Ryan Tollner. As a senior football executive and NFLPA-certified agent, Callahan works with professional football players on contract negotiations, draft preparation, free agency strategy, career development, marketing opportunities, and long-term planning. Under his leadership, Excel Football has become one of the largest full-service football representation practices in the industry, representing NFL talent across all stages of their careers. Publicly available industry records identify Callahan as the representative for numerous NFL players and indicate that he has played a key role in negotiating contracts for both established veterans and emerging professional athletes. His experience in football representation spans more than a decade and includes leadership responsibilities at two major sports agencies.