In a significant move to ensure the integrity of the sport, Major League Baseball (MLB) has announced an official partnership with Polymarket, a leading prediction market platform. This collaboration, formalised through a memorandum of understanding with the Commodity Futures Trading Commission (CFTC), aims to address integrity concerns and establish proactive measures as the landscape of sports betting continues to evolve.
Collaboration to Combat Integrity Risks
On Thursday, MLB issued a statement revealing its commitment to enhancing the integrity of baseball through this new partnership. The league has engaged with Michael S. Selig, the chair of the CFTC, to ensure a quick response to any integrity-related incidents and to anticipate emerging trends. This initiative comes in the wake of rising concerns regarding the implications of prediction markets, which have sparked discussions among various sports leagues about potential integrity issues tied to legal sports gambling.
MLB Commissioner Rob Manfred emphasised the league’s priority, stating, “Protecting the integrity of the game on the field is our top priority. By engaging in this community, we are able to work together to create clear boundaries with the goal of mitigating risk while providing fan engagement opportunities.” This proactive approach marks a pivotal step in MLB’s efforts to navigate the complexities of legal gambling and prediction markets.
Exclusive Access and Data Sharing
As part of the agreement, Polymarket will gain exclusive rights to use MLB logos within its prediction market products. Additionally, the platform will have access to official league data from Sportradar, MLB’s designated global distributor. This access is expected to enhance the accuracy and appeal of Polymarket’s offerings, while also ensuring that the integrity of the game is upheld.

The memorandum also establishes a framework for sharing confidential information regarding the integrity of professional baseball and its related prediction markets. Regular meetings between designated representatives will facilitate ongoing communication and collaboration, further strengthening the relationship between MLB and the CFTC.
Industry-Wide Integrity Initiatives
While MLB’s partnership with Polymarket is a step forward, the league has made it clear that it intends to foster integrity relationships with all prediction market exchanges that offer baseball contracts. These platforms will be required to implement necessary integrity protections into their rule books, reflecting MLB’s commitment to maintaining a level playing field across the entire industry.
The rapid expansion of sports offerings on prediction markets presents both opportunities and challenges for leagues. As these markets allow participants to wager on the outcomes of future events, the potential for fraud and manipulation remains a pressing concern. By establishing comprehensive integrity frameworks, MLB aims to mitigate these risks while capitalising on new revenue streams.
A Growing Trend in Sports Betting
The trend towards integrating prediction markets into professional sports has gained momentum, with multiple leagues exploring similar partnerships. Notably, the NHL recently announced multiyear agreements with both Polymarket and Kalshi, another prominent prediction markets platform. Major League Soccer has also aligned itself with Polymarket, indicating a broader movement within the sports industry towards embracing prediction markets as part of their business models.

This shift is not limited to leagues; individual athletes are also getting involved. NBA star Giannis Antetokounmpo became a shareholder in Kalshi, highlighting the growing intersection between professional sports and prediction markets.
Why it Matters
The partnership between MLB and Polymarket signifies a critical step in the ongoing efforts to safeguard the integrity of professional sports in an era where gambling continues to gain traction. As prediction markets evolve, the measures taken by MLB and the CFTC will not only protect the sport but also set a precedent for how leagues worldwide approach the burgeoning landscape of sports betting. By prioritising integrity and collaboration, MLB is paving the way for a responsible and engaging future for fans and stakeholders alike.