Greg Barnett is an NFLPA-certified Contract Advisor and sports agent with WIN Sports Group, where he represents professional football players in contract negotiations, career management, and athlete advisory services. According to the National Football League Players Association (NFLPA) official agent directory, Barnett has been certified since 2003 and is listed as an active agent affiliated with WIN Sports Group. His NFLPA profile confirms his role in negotiating NFL player contracts and working within the league’s representation system. Within WIN Sports Group, Barnett is part of a modern football representation firm that provides full-service athlete management, including contract negotiation, marketing and branding support, endorsement opportunities, and long-term career planning. The agency represents NFL players, coaches, and executives, and positions itself as a forward-looking organization focused on maximizing both on-field and off-field opportunities for clients. Public agent databases also confirm Barnett’s role as an active NFL representative and show his involvement in player contract negotiations in the league. Industry listings note his association with WIN Sports Group alongside other agents within the firm’s football division.