Major League Baseball has taken a significant step into the world of prediction markets, announcing partnerships with Polymarket and the Commodity Futures Trading Commission (CFTC) on Thursday, March 20, 2026. This move positions MLB as the largest US sports league to date to formally engage with this emerging, and sometimes controversial, financial sector.
Polymarket has been designated as the league’s official prediction market, while MLB Commissioner Rob Manfred and CFTC Chairman Michael Selig signed a letter of intent outlining a shared goal: protecting the integrity of the sport. The deal, according to sources cited by Front Office Sports, is valued between $150 and $300 million over a potential three-year period.
The agreement mirrors traditional league sponsorships. Polymarket and its brokers will gain exclusive access to MLB’s brands and logos, with the Polymarket brand appearing on MLB’s digital platforms and at league events. Crucially, Polymarket will also receive access to official league data from Sportradar, a key component for accurate prediction market functionality.
MLB already maintains official partnerships with established sports betting operators FanDuel, DraftKings, and BetMGM. This expansion into prediction markets represents a broadening of the league’s engagement with the evolving sports wagering landscape.
While Polymarket has not yet fully launched its US platform, sports betting contracts are already available within the app, with the MLB logo recently appearing there. Yet, actual baseball-specific betting on the platform doesn’t appear to be active as of this writing.
A Logical Progression
While not the first professional league to explore prediction markets, MLB’s entry is significant given its size and influence within the US sports landscape. The National Hockey League (NHL) previously established licensing agreements with both Polymarket and Kalshi. Polymarket also maintains marketing agreements with Major League Soccer (MLS) and the Ultimate Fighting Championship (UFC).
Commissioner Manfred had signaled MLB’s interest in this space as early as February 2026, stating that prediction markets were part of discussions during owners’ meetings last month, particularly in relation to a recent betting controversy involving Cleveland Guardians pitchers Emmanuel Clase and Luis Ortiz. “We held it important to inform owners why prediction markets are different than sports betting, why we should consider engaging with prediction markets to protect our integrity and get the type of protection we need,” Manfred reportedly said to reporters.
The term “integrity,” while often invoked, doesn’t necessarily align with common perceptions within the gambling and financial industries. Nevertheless, it’s a principle both Manfred and Selig are emphasizing. “We are committed to working together to protect the integrity and resilience of prediction markets relating to professional baseball,” Selig said in a statement.
Manfred added in MLB’s press release: “The new agreements we have reached with Polymarket and the CFTC are essential steps in proactively addressing the new and rapidly growing area of prediction markets. Protecting the integrity of the game on the field remains our top priority. Through our engagement with this community, we can work together to establish clear boundaries to minimize risks and create opportunities for fan engagement.”
What’s Next for Prediction Markets in Sports?
The sports and gambling world took notice when the NHL finalized its contracts with prediction markets in October. A few months later, the MLB’s collaboration doesn’t come as a major surprise. The trend suggests a growing acceptance of these markets as a legitimate, albeit still developing, component of the sports ecosystem.
That leaves the National Football League (NFL) and the National Basketball Association (NBA) as the remaining major leagues without formal prediction market partners. It seems only a matter of time before further announcements are made. During the NBA All-Star festivities in Los Angeles last month, Commissioner Adam Silver indicated the league views “prediction markets essentially the same way we view sports betting markets or sports betting operators.”
The NFL, however, has walked back statements from Executive Vice President Jeff Miller regarding the benefits of prediction markets for fan engagement. The evolving stance of the NFL highlights the cautious approach some leagues are taking.
As was written last month, if prediction markets continue to advance under regulatory tolerance from the federal government, they represent an opportunity that leagues will find hard to ignore. The MLB’s move underscores that sentiment, signaling a potential shift in how professional sports leagues interact with and regulate these emerging markets.
Fans can expect to see further developments in this space as leagues navigate the complexities of prediction markets and seek to balance innovation with the preservation of competitive integrity. The MLB’s partnership with Polymarket is a clear indication that the future of sports betting and fan engagement is evolving, and prediction markets are poised to play a significant role.
The next key date to watch is the full launch of Polymarket’s US platform, which will provide a clearer picture of how baseball-specific prediction markets will function and be received by fans. MLB’s 2026 season, which begins March 28th, will be closely monitored for any impact from this new partnership.
