NBA memo to sportsbooks seeks parlay curbs as prediction markets resist

Adam Silver's office sent a memo to partner sportsbooks on Friday, October 16, asking them to prohibit a set of specific wagers the league considers integrity risks. The document, reported by ESPN, named parlays combining a player's under on his own statistics, bets on the opening tip winner, and under wagers on players expected to play fewer than twelve minutes. FanDuel's response, through a spokesperson, was compliance. The statement was careful and clean — the language of an industry that has learned to manage leagues the way it once managed state regulators.

What Scott Kaufman-Ross, the NBA's executive vice president, said publicly is worth holding: that the league had calibrated these restrictions to avoid pushing activity into illegal markets. That is not a small concession to make in a memo to your own commercial partners. It means the league understands that integrity measures have a ceiling, and that the ceiling is set by the alternative — unregulated offshore books that don't answer to anyone.

The harder problem, which Kaufman-Ross acknowledged, is prediction markets. The NBA wants these restrictions to apply universally. But the prediction market operators don't have the same partnership infrastructure with the league that FanDuel and DraftKings do. There is no commercial agreement to invoke. There is no joint operating committee. There is no data-sharing arrangement in place that the league can use as leverage. Silver has called publicly for prediction market operators to grant the NBA access to their data. The call has not, as far as is on the public record, produced formal agreements.

This is where I think the consensus framing gets it wrong. The story being told in most coverage is about bet types — which parlays survive, which prop markets disappear. That is not the durable issue. The durable issue is jurisdictional authority over a category of market that regulators have not finished classifying.

The CFTC's preemption argument, which Underdog is currently pressing in seven states, would — if it holds — place sports event contracts outside the reach of state sports wagering frameworks entirely. If that argument succeeds, the NBA's memo has no enforcement path to prediction markets at all. The league would be asking CFTC-regulated entities to voluntarily restrict markets that federal commodity law does not prohibit. Voluntary compliance is not nothing, but it is not a framework.

I have watched leagues attempt to influence market structure before, and the pattern is consistent: the initial ask is framed as integrity, the real negotiation is about data access and revenue share, and the endpoint depends entirely on whether the regulated entities have more to gain from cooperation than from resistance. Right now, the prediction market operators have every incentive to hold the CFTC line and let the courts sort jurisdiction before they agree to anything that looks like league oversight.

FanDuel's compliance on Friday was straightforward because FanDuel has a partnership and a license to protect in every state it operates. Kalshi and Polymarket are in a different position, and the NBA's memo does not reach them the same way. The league knows this. Kaufman-Ross said so.