NFL asks Polymarket and Kalshi to ban 'objectionable' game outcome bets
The NFL has asked prediction market platforms including Polymarket and Kalshi to prohibit contracts tied to NFL game outcomes and what it calls 'objectionable bets.' The request comes one week before the NFL season begins. The league has previously pushed back against wagering markets tied to individual player performances and other game-related outcomes it considers sensitive. The move continues ongoing tension between major sports leagues and prediction market platforms over proprietary event data and the leagues' desire to control wagering markets derived from their competitions.
The NFL demand adds a private-sector front to the regulatory pressure already squeezing Kalshi and Polymarket. Unlike CFTC or state rules, a league ban carries no legal force, but it exposes platforms to trademark and data-usage disputes that cost almost as much to litigate. Sports leagues control the underlying feeds that make event contracts tradable; without official data, platforms must rely on slower, less reliable sources that traders will notice.
The timing matters because both platforms are racing to capture displaced volume and cannot afford product gaps at season open. If the NFL follows through with data restrictions or cease-and-desist letters, other leagues will likely copy the playbook. A commercial boycott from the NFL, MLB, and NHL together would strand event contracts on unofficial data and drive traders back to legacy sportsbooks.