NFL Demands Prediction Markets Drop 'Objectionable' Bets
The NFL has escalated its fight with prediction market exchanges, sending a formal letter on September 3 demanding that federally regulated designated contract markets (DCMs) — the exchanges behind platforms like Kalshi and Polymarket — stop listing sports event contracts the league considers vulnerable to manipulation or insider trading. The letter was sent by NFL chief compliance officer Sabrina Perel and was reported by Casino.org and multiple other gaming and legal trade outlets.
What the NFL flagged
Perel's letter identified specific categories of contracts the league wants pulled, including markets tied to incomplete passes, missed field goals, running back yardage thresholds, player injuries and availability, and officiating or replay-review decisions. The league also flagged contracts built around non-competitive factors like celebrity attendance or broadcast mentions. Beyond manipulation risk on the field, the NFL separately called out contracts touching information categories it considers vulnerable to insider exploitation, such as starting lineups, trades, coaching decisions, and NFL Draft picks — areas where people with access to non-public information could have an edge over the general betting public.
According to the letter, this isn't the league's first attempt at raising these concerns: the NFL says it first flagged objectionable contract categories to prediction market operators back in March 2026, and Perel's letter states that contracts within those already-identified categories have continued to be listed on exchanges in the months since.
The regulatory backdrop
The letter arrives against a regulatory environment already in flux. The Commodity Futures Trading Commission (CFTC), which oversees the federally regulated exchanges the NFL's letter targets, published proposals in June addressing sports event contracts, and specifically noted that injury-based markets can create "perverse financial incentives" and raise manipulation concerns tied to outcomes that depend on officiating and injury decisions rather than final results. That regulatory language lines up closely with the categories the NFL is now asking exchanges to remove voluntarily.
Why it matters for bettors
Prediction market sports contracts have expanded rapidly in 2026, operating in a legal gray area that has already triggered state-level fights in places like New Jersey, Nevada, Massachusetts, and Washington over whether they should be regulated as sports betting. This letter adds a new pressure point from a source with real leverage: the league whose games the contracts are built on. If exchanges comply, it could mean a narrower menu of NFL-related prediction contracts, particularly around player props and injury-adjacent markets, heading into the season. If they don't, it gives the NFL a stronger public record to point to if it pursues further action, whether through the CFTC's rulemaking process or otherwise.