Why Major Sports Leagues Are Divided Over Prediction Markets

Prediction markets have become one of the most talked-about developments in American sports. Fans can now trade contracts based on game results, championship winners, player transfers, and other events. But while the platforms are attracting growing attention, the major sports leagues cannot seem to agree on how they should be treated.

The NHL and MLB have embraced partnerships with prediction market operators. The NFL has taken a much more confrontational approach, while the NBA continues to raise questions about insider information and game integrity.

The disagreement is about more than whether fans should be able to predict the outcome of a basketball or football game. It comes down to who regulates these markets, which events should be tradable, and how much control sports leagues should have over activities involving their teams and players.

Prediction Markets Are Not Quite the Same as Sportsbooks

Traditional sportsbooks set odds and accept wagers on sporting events. Prediction markets work differently, at least in their structure.

On platforms such as Kalshi and Polymarket, participants trade contracts tied to future outcomes. A contract might pay $1 if a particular team wins a championship and $0 if it does not. Its trading price can change as participants buy and sell contracts based on their expectations.

For example, a contract trading at $0.65 suggests a market-implied probability of approximately 65%. That figure reflects current trading activity rather than an official probability or a guarantee of what will happen.

The distinction matters because federally regulated prediction exchanges operate under a different legal framework from traditional state-licensed sportsbooks.

That difference has become central to the debate. Prediction market operators argue that they offer financial event contracts, while many state gambling regulators maintain that contracts tied to sporting outcomes should be subject to sports betting laws.

Readers exploring the industry can find comparisons of different sports prediction apps, including how platforms handle contracts, pricing, fees, and market availability.

However, the regulatory status of individual sports contracts remains disputed, and access can vary depending on jurisdiction.

The NHL Has Chosen to Embrace Prediction Markets

The National Hockey League became one of the clearest examples of a major sports organization welcoming prediction markets.

In October 2025, the NHL announced multiyear partnerships with Kalshi and Polymarket, giving both companies official prediction market partner status in the United States.

The agreements included access to official league data and permission to use certain NHL trademarks and branding.

For the NHL, working directly with prediction market companies offers an opportunity to participate in an industry that already attracts interest in hockey outcomes.

It also creates a more formal relationship between the league and the platforms offering contracts connected to its games.

Of course, a commercial partnership does not eliminate concerns about suspicious trading or the misuse of confidential information. It simply gives the NHL another way to engage with the companies involved and establish expectations around their activities.

MLB Is Following a Similar Path

Major League Baseball took its own significant step in March 2026 when it announced a partnership with Polymarket.

Under the agreement, Polymarket became MLB's exclusive prediction market exchange partner, with rights involving league branding and official data.

MLB also signed a memorandum of understanding with the Commodity Futures Trading Commission (CFTC), the federal agency responsible for overseeing derivatives markets.

The arrangement focuses on information sharing and cooperation over potential threats to baseball's integrity.

That second agreement is especially important. Baseball has a long history of taking gambling-related integrity concerns seriously, so the league's decision to cooperate with prediction market operators and federal regulators represents a notable development.

Rather than avoiding the sector, MLB appears to believe that direct engagement can help it respond to risks more effectively.

Still, the decision has attracted criticism from organizations that believe sports-related prediction contracts should remain subject to state gambling regulation.

The NFL Wants Stronger State Oversight

The NFL has taken a different approach.

In October 2026, the league filed an amicus brief in a Supreme Court case involving Kalshi and New Jersey regulators. The NFL argued that sports prediction contracts should not escape state gambling regulation simply because they are offered through federally regulated exchanges.

Its concerns extend beyond regulatory jurisdiction.

The league has also pushed for restrictions on certain types of markets that could be vulnerable to manipulation, along with stronger protections for younger participants.

That position is particularly interesting because the NFL already has established commercial relationships with traditional sports betting companies.

The apparent contradiction has a practical explanation: the league believes the regulated sportsbook system provides oversight and integrity arrangements that it considers necessary to protect professional football.

Prediction markets challenge that existing model by offering sports-related contracts through another regulatory structure.

For the NFL, the main question is not simply whether trading on football outcomes should exist. It is whether the same protections should apply regardless of how a platform describes its product.

The NBA Is Especially Concerned About Insider Information

The NBA's position is somewhat different from the NFL's, but it has also been cautious.

Basketball creates several situations in which a relatively small group of people may know information that could significantly affect a market.

Consider a potential player trade. Team executives, agents, and other insiders might know that negotiations are progressing long before the public receives confirmation.

If a prediction market offers contracts on that player's next team, someone with confidential information could potentially have an unfair advantage.

The same concern applies to injuries, lineup decisions, and other events that are not always determined directly by the result of a game.

The NBA has asked federal regulators to consider restrictions on markets involving player transactions, injuries, and other events it believes are especially vulnerable to manipulation.

Commissioner Adam Silver has also expressed interest in stronger cooperation with the CFTC over market integrity.

The league's approach reflects a distinction that often gets lost in the wider debate: predicting a game winner and trading on a confidential personnel decision may create very different risks.

The Debate Goes Beyond Traditional Sports

Prediction markets are also spreading into entertainment, technology, and competitive gaming.

Esports is an interesting example because it shares many characteristics with traditional sports while operating within a very different industry.

Tournament results can attract prediction activity, but the wider gaming industry also generates questions about game release dates, major announcements, and award winners.

As explored in this article on gaming in prediction markets, these markets connect competitive gaming with a broader interest in forecasting industry events.

They also raise familiar questions about access to information.

Professional esports teams, game developers, tournament organizers, and publishers may possess information that the public does not. Depending on the contract, that knowledge could influence trading activity.

Unlike the NFL or NBA, competitive gaming does not have one overarching league governing the entire industry. That fragmentation may make consistent market integrity standards more difficult to establish.

As prediction markets expand, the debate over which contracts are appropriate is likely to extend far beyond football, baseball, hockey, and basketball.

Why the Regulatory Disagreement Matters

Much of the tension between sports leagues and prediction market companies comes from overlapping regulatory systems.

Traditional sports betting in the United States is primarily governed through state and tribal frameworks. Sportsbooks generally need authorization in each jurisdiction where they operate.

Federally regulated prediction exchanges, meanwhile, maintain that their event contracts fall under the CFTC's authority.

The dispute becomes complicated when both systems offer products tied to the same sporting events.

Supporters of federally regulated prediction markets argue that national oversight can provide a consistent framework for trading.

Opponents worry that this arrangement could undermine state gambling laws and leave gaps in consumer protection and sports integrity measures.

A further complication is that contracts do not all carry the same risks. Trading on a season championship involves different information from trading on a player's injury status or an unexpected coaching decision.

Any future regulatory framework will need to account for those differences.

Can the Leagues Eventually Agree?

It seems unlikely that every major sports league will take exactly the same approach.

The NHL and MLB have demonstrated that commercial partnerships are possible, while the NFL continues to argue for stronger state oversight. The NBA's emphasis on insider information suggests that restrictions on particular contract categories could become an important part of the discussion.

There is, however, some common ground.

All four leagues have an interest in protecting the credibility of their competitions. None benefits when fans begin to question whether a result, roster decision, or injury announcement was influenced by financial incentives.

The challenge is determining how prediction markets can operate without creating unnecessary opportunities for manipulation.

That might involve better information sharing, clearer restrictions on sensitive markets, stronger monitoring of suspicious activity, or cooperation between federal regulators, states, and sports organizations.

A Debate That Is Far From Settled

Prediction markets are no longer a minor experiment on the edges of professional sports. Their growth has forced leagues to decide whether to cooperate with the industry, challenge its legal foundations, or pursue a combination of both.

The NHL and MLB see opportunities in formal partnerships. The NFL is pressing for state regulatory authority, while the NBA wants stronger protections against the misuse of sensitive information.

Those differences reflect the difficult balance between commercial opportunity, innovation, and protecting the integrity of competition.

For now, the leagues may disagree about the best way forward. But they increasingly face the same reality: prediction markets have become part of the sports business, and the rules governing them are still being contested.