Mark Henness is an NFL Players Association (NFLPA) Certified Contract Advisor and the founder, CEO, and lead agent of Leverage Football, a sports representation agency based in Las Vegas, Nevada. Certified since 2015, he leads a team of football agents and executives focused on NFL player representation, draft preparation, contract negotiation, and long-term athlete career management within a collaborative agency structure. Before establishing Leverage Football, Henness built a long professional background as a practicing attorney, gaining extensive experience in legal work and negotiation before transitioning into sports representation. His legal training became a foundation for his approach to NFL contract work, particularly in structuring player deals, managing salary cap negotiations, and advising athletes on the business aspects of professional football. At Leverage Football, he leads an agency model that emphasizes holistic athlete support, combining contract negotiation with career planning, marketing opportunities, and personal development guidance. The firm represents NFL players across different career stages, including draft prospects, undrafted free agents, and active roster veterans, and operates with a team-based structure of agents and advisors.