Harold Lewis is a veteran NFL player agent and the founder and President of National Sports Agency (NSA), a full-service athlete representation firm established in 1983. Over his four-decade career, he has represented hundreds of NFL athletes and built NSA into a respected football agency known for personalized athlete representation and long-term client relationships. and later signing as a free agent with the New York Mets organization. Since founding NSA, he has represented numerous NFL players, negotiated professional contracts, and mentored many agents within the football industry. , an athlete representation firm headquartered in St. Louis. With more than 40 years of experience in sports representation, he specializes in NFL player contract negotiations, career management, and athlete marketing. NSA has represented hundreds of college and NFL athletes and remains an established agency within professional football.