NBA Warns Prediction Markets Could Harm League Integrity

The National Basketball Association has stepped into the debate over sports prediction markets, raising concerns about their impact on game integrity. In a recent letter to the Commodity Futures Trading Commission (CFTC), the NBA laid out its issues with how these markets function, especially as they continue to grow.

Good to know

• Prediction markets let users trade on sports outcomes, which some argue bypass state betting laws.
• The NBA is raising concerns about how quickly these markets are growing without oversight.
• Player prop bets and lack of data-sharing with leagues raise red flags for integrity.

Alexandra Roth, Vice President of the NBA, explained the league’s main concern in her letter: “Protecting the integrity of NBA basketball and preserving public confidence in our league and in our sport is our highest priority.” She warned that the current model for these exchanges poses “substantial integrity risks.”

Several platforms, including Kalshi, Robinhood, and Crypto.com, allow users to trade futures tied to sports events. These products often look a lot like traditional sports bets, but they operate under federal commodities rules instead of state gambling laws. While some see that as a legal loophole, courts have not agreed so far.

Kalshi in particular has taken an aggressive stance. After fending off the CFTC in federal court over political betting, it expanded into sports. This triggered cease-and-desist orders from multiple state regulators. Kalshi responded by suing in several states and has already won temporary legal victories in Nevada and New Jersey.

A big sticking point is how quickly these markets launch. Traditional sportsbooks must get state approval before offering a new type of bet. In contrast, federally regulated exchanges can simply self-certify contracts and start trading right away. Roth pointed to this gap, saying, “Exchanges can launch new, more exotic sports prediction markets via self-certification,” while sportsbooks face far more scrutiny before adding anything new.

The NBA is especially wary of how far these markets might go. Roth said player performance markets, or even contracts based on officiating or injuries, “are not far behind.” That hits a nerve for the league, given recent events.

Last year, former Toronto Raptors player Jontay Porter was banned for life after betting-related misconduct. He exited games early to affect player prop bets, and later pleaded guilty to conspiracy to commit wire fraud. Incidents like this highlight how easily betting products can threaten fair play.

Roth also criticized the lack of data-sharing between exchanges and sports leagues. She wrote, “We are not aware of any requirement that either exchanges or brokers report potentially suspicious trades or trading patterns… nor are we aware of any mechanism that would require ongoing information sharing between exchanges and affected leagues.”

Without that visibility, she argued, it becomes harder for leagues to identify and manage risks. In her view, the danger will only increase as prediction markets grow.