Key Highlights
- Polymarket secures exclusive status as Major League Baseball’s official prediction market platform partner
- The platform gains exclusive rights to utilize MLB branding, official statistics, and promotional opportunities at baseball events
- A memorandum of understanding between MLB and CFTC establishes information-sharing protocols for market integrity oversight
- Partnership emerges after federal indictments against Cleveland Guardians players for pitch-fixing violations
- Baseball follows other professional leagues including MLS, NHL, and UFC in embracing prediction platform collaborations
Major League Baseball revealed on Thursday that Polymarket has been designated as its official prediction market partner, granting the platform exclusive authorization to use MLB trademarks, official league data, and visibility opportunities across baseball events.
Front Office Sports initially broke the story about this multi-year partnership. The agreement represents another milestone in the expanding relationship between professional sports organizations and prediction market operators.
Concurrently with the Polymarket announcement, MLB entered into a memorandum of understanding with Commodity Futures Trading Commission Chair Michael Selig. This MOU creates a framework for collaborative information exchange regarding prediction market safeguards and professional baseball operations.
While the memorandum lacks legal enforceability, it marks an unprecedented collaboration between a federal regulatory body and a professional sports organization.
CFTC Chair Selig shared on X: “We’ve committed to work together to protect the integrity and resilience of prediction markets relating to professional baseball.”
Integrity Safeguards Drive Partnership Framework
The announcement’s timing connects directly to developments from the previous year. Last November, federal prosecutors indicted two pitchers from the Cleveland Guardians, alleging they accepted payments from gamblers to manipulate specific pitches during official games.
These criminal charges intensified scrutiny of baseball’s expanding gambling connections. MLB Commissioner Robert Manfred confronted the issue head-on in his public statement.
“Protecting the integrity of the game on the field is our top priority,” Manfred said. “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.”
Under the partnership terms, Polymarket and MLB have agreed to prohibit markets that could threaten competitive integrity. Banned markets include those focused on individual pitch outcomes, managerial strategic decisions, and umpire calls.
Despite Polymarket’s exclusive designation, MLB clarified it will maintain existing relationships with alternative prediction market platforms offering baseball-related contracts.
Regulatory Challenges Facing Prediction Platforms
Polymarket CEO Shayne Coplan characterized the partnership as enhancing fan engagement while collaborating with authorities to safeguard sports integrity.
This development arrives amid intensifying regulatory scrutiny of prediction markets. Earlier this week, Arizona’s attorney general brought criminal charges against Kalshi, a competing prediction market operator, accusing the company of running an unlicensed gambling operation within state borders.
Kalshi rejected the allegations, calling them “meritless.” CFTC Chair Selig described Arizona’s charges as “entirely inappropriate.”
The CFTC’s collaborative approach with MLB signals federal support for sports-related prediction markets, despite some state gambling regulators contending these platforms should fall under sports betting regulations.
MLB’s Polymarket partnership mirrors comparable agreements established by the National Hockey League, Major League Soccer, and the Ultimate Fighting Championship.
Polymarket has also established a data collaboration arrangement with Dow Jones, which publishes Barron’s.


