NFL asks Supreme Court to treat sports prediction markets as gambling
The league told the Court that more than half of prediction-market volume on the first Sunday of the season was tied to NFL games and asked for review before another…
NFL seeks state oversight
The NFL is asking the US Supreme Court to treat sports contracts traded on prediction markets as gambling subject to state law, according to Inside Bitcoins. In a 32-page amicus brief filed this week in Flaherty v. KalshiEx, LLC, the league urged the justices to take up the dispute between Kalshi and New Jersey.
Former US Attorney General William Barr co-authored the filing. New Jersey petitioned the Court to resolve conflicting appeals court decisions: the Sixth and Ninth Circuits concluded that sports event contracts are not swaps under federal commodities law, while the Third Circuit reached the opposite conclusion. The NFL supports the Sixth and Ninth Circuits’ position. Its full brief is available on the Supreme Court docket.
Integrity concerns and operator responses
The league questioned whether the Commodity Futures Trading Commission has sufficient rules, supervisory capabilities and enforcement resources to protect game integrity. According to Inside Bitcoins, the NFL also said the CFTC and several market operators had resisted its requests for safeguards. Its objections include contracts tied to a missed field goal, the next penalty or a phrase used during a broadcast.
The NFL warned that players could intentionally miss kicks or fumble to influence contract prices. It also sought a minimum betting age of 21, consistent with licensed sportsbooks. To underscore the scale of its concern, the league said NFL games accounted for more than half of all prediction-market trading volume on the season’s first Sunday and requested Supreme Court review before another NFL season passes.
Kalshi responded that it actively monitors sports markets and wants the NFL to cooperate. Spokeswoman Elisabeth Diana cited partnerships with the NHL and MLB, alongside the federal enforcement system supporting CFTC rules. Polymarket likewise emphasized its commitment to integrity and continuing improvements to surveillance, arguing that collaboration with the CFTC and leagues provides stronger oversight than differing state regimes, Inside Bitcoins reported.
The NFL is seeking state regulation rather than a blanket rejection of prediction markets. Inside Bitcoins described the sports-contract dispute as involving as much as $1 trillion in notional value and reported that Kalshi announced app deals this week with four tribal nations—three in California and one in Oklahoma. The Supreme Court has not announced whether it will hear the case.
What it means for prediction markets
- Review remains undecided: The NFL’s filing supports taking the case; it is not a Supreme Court ruling on the legal status of sports contracts.
- Jurisdiction is the central issue: The conflicting appeals decisions put the treatment of sports contracts under federal commodities law—and the role of state gambling regulation—at the heart of the dispute.
- Contract design is under scrutiny: The league’s concerns extend beyond game outcomes to individual plays and broadcast-related events, alongside age limits and integrity safeguards.
- NFL exposure is substantial: The league’s figure of more than half of prediction-market volume on the season’s first Sunday shows the importance of football-linked activity on that specific day.
- Insidebitcoins (insidebitcoins.com)https://insidebitcoins.com/news/nfl-tells-supreme-court-sports-prediction-markets-are-gambling-for-states-to-police