The National Football League has determined that trading in prediction markets offered by Kalshi, Polymarket, Robinhood and similar platforms constitutes prohibited gambling under its long-standing policy. The move bars players, coaches and other club personnel from buying or selling contracts tied to league outcomes on those exchanges. NFL vice president and chief compliance officer Sabrina Perel told reporters on Monday that such event contracts “mimic sports betting,” placing them squarely within the league’s restrictions. David Highhill, the league’s general manager for sports betting, added that prediction markets currently operate without the information-sharing rules, responsible-gaming tools and bet limitations required of licensed sportsbooks, making them susceptible to manipulation or price distortion. The clarification follows Kalshi’s recent self-certification with the Commodity Futures Trading Commission of markets on whether specific players will win roster spots or miss games because of injury—types of wagers regulators have previously kept out of traditional sportsbooks. The league said it will begin educating team personnel immediately to ensure compliance with the broadened policy.