The National Football League said Monday that players, coaches and staff are barred from trading sports-related contracts on prediction-market platforms such as Kalshi, Robinhood and Polymarket, concluding that the products “mimic sports betting” and fall under the league’s existing gambling prohibitions. Vice President and Chief Compliance Officer Sabrina Perel told reporters the policy applies immediately, while Vice President for Sports Betting David Highhill warned that the markets could be “susceptible to manipulation or price distortion” because they lack the information-sharing requirements, integrity monitoring and consumer safeguards that govern licensed sportsbooks. The stance follows Kalshi’s recent self-certification with the Commodity Futures Trading Commission to list contracts covering player performance and roster outcomes—bets regulators have long blocked at traditional sportsbooks. The league said it is now educating personnel about the ban as prediction-market operators expand ahead of the coming season.