NFL Freezes Out Kalshi and Polymarket, Demands Bet Bans Before Any Deal

The NFL announced its official sports-betting partners for the season on Thursday, September 3: DraftKings, FanDuel, and newcomer Fanatics. All three get NFL logo rights and in-broadcast ad slots. Kalshi and Polymarket got nothing, according to Bloomberg.

It was deliberate. The league has been drawing this line for months.

The Letter

On the same day the sponsorship deals went public, Sabrina Perel, the NFL's chief compliance officer, sent prediction-market operators a letter demanding they stop listing what she called "objectionable bets," according to ABC News, which obtained the letter. The categories: player injuries, fan safety, player misconduct, officiating calls (including flag counts), broadcast mentions, and celebrity attendance.

The letter also flagged single-play props as "easily manipulable by a single person." Examples included whether a kicker misses a field goal, whether a quarterback's first pass is incomplete, or whether a running back gains fewer than a set number of yards on his first carry. This is the NFL's second such letter. The first went out months earlier.

The Mahomes Test Case

The injury issue isn't theoretical. Polymarket self-certified a market on Patrick Mahomes' Week 1 availability against the Denver Broncos on August 25, then pulled it hours later, according to Mike Florio of Pro Football Talk, who reported a Polymarket source said the Commodity Futures Trading Commission asked operators to remove such wagers. Kalshi posted the identical Mahomes market and, as of this week, has refused to take it down, continuing to run injury-related markets on other players.

Two competitors face the same regulator and the same request, yet produce different outcomes. No enforcement action against Kalshi has been announced, and nothing here proves the CFTC is treating one company differently on purpose.

Mahomes tore his ACL in December, and the uncertainty around his return has real market consequences elsewhere. Caesars Sportsbook has the Chiefs at -150 to win fewer than 10.5 games this season, a number head of football trading Joey Feazel called "not normally what you see with the Chiefs."

What the NFL Actually Wants

In a July letter to the CFTC, the NFL asked for a 21-plus minimum trading age matching regulated sports betting, advertising limits, and a formal right to object to specific contracts before they go live, according to Gambling Insider and on360.ca. The league says the CFTC's proposed rules on prediction markets fall "significantly short" on integrity and manipulation risks, Front Office Sports reported.

Eric Foote, founder of VIG Partners and a former chief strategy officer at PointsBet, said the NFL has isolated four or five non-negotiable categories and won't budge until it gets clarity. "I still see them sitting out through the course of this NFL season or a portion of it," Foote told Gambling Insider. A Front Office Sports source in the prediction-market industry was blunter: "I would be incredibly shocked if anything at all happens this season."

Renie Anderson, the NFL's chief revenue officer, told ESPN prediction markets are simply "not a space that we're considering right now commercially."

The Industry's Pushback

Novig, a smaller exchange, rolled out a "Responsible Trading Framework" in August that happens to check several of the NFL's boxes: a 21-plus floor, self-monitoring tools, and consumer protections written into contracts. Founder Jacob Fortinsky insists the timing is coincidence. "Our Responsible Trading framework wasn't developed in response to the NFL," he said, adding Novig required 21-plus users before it became a federally regulated exchange.

Not everyone in the industry buys the age argument at all. Dean Sisun, co-founder and CEO of ProphetX, argues prediction markets are financial instruments, not gambling products, and shouldn't inherit a 21-plus rule by default. "Why can someone serve in the military or trade options at 18 but not trade on a prediction market until 21?" he asked. The question hinges on a premise the NFL, several state regulators, and now the courts are actively fighting over: whether these contracts function like commodities trades rather than sports bets.

Everyone Else Already Signed

The NFL's holdout looks increasingly isolated. MLB has a Polymarket arrangement and a CFTC memorandum of understanding, and Kalshi just became the official prediction app for nine MLB teams. The NHL has deals with both Kalshi and Polymarket. MLS has a Polymarket tie-up. Kalshi CEO Tarek Mansour has suggested a deal with the NBA could be close, according to RotoWire's Bill Speros, which would leave the NFL as the last major holdout.

The Bigger Legal Fight

Whether any of this even matters at the state level is now before the Supreme Court. New Jersey has asked the justices to overturn an April 2026 Third Circuit ruling that gave the CFTC exclusive jurisdiction over Kalshi's sports-related contracts, according to Reuters. Days earlier, the Ninth Circuit reached the opposite conclusion, creating the circuit split that makes Supreme Court review likely. Connecticut, separately, is suing Kalshi over what it calls unlicensed sports gambling.

The Supreme Court hasn't said whether it will take the case. Until it rules, or until Kalshi and Polymarket bend on age limits and bet categories, the NFL's season opens next week with no prediction-market logos on the field, no player endorsements, and no answer to the question that will define this fight: is a bet on Patrick Mahomes' knee a gambling wager or a financial contract?