Key Highlights
- Major League Baseball designated Polymarket as its exclusive official partner for prediction markets
- The platform receives exclusive rights to MLB branding, official league data, and promotional visibility at baseball events
- MLB established a collaborative framework with the CFTC to monitor and protect prediction market integrity
- This partnership emerged following federal charges against two Cleveland Guardians pitchers involved in pitch manipulation
- Baseball becomes the latest major sports organization to embrace prediction market technology, joining MLS, NHL, and UFC
Major League Baseball revealed Thursday its selection of Polymarket as the league’s official partner for prediction markets, granting the platform exclusive authorization to use MLB branding, official statistics, and promotional opportunities at baseball events.
Front Office Sports initially reported this multiyear partnership. The agreement represents another milestone in the expanding relationship between professional sports organizations and prediction market technology.
Concurrently with the Polymarket partnership, MLB formalized a memorandum of understanding with Commodity Futures Trading Commission Chair Michael Selig. This MOU creates a framework for sharing intelligence and data concerning prediction market operations and professional baseball activities.
While the memorandum carries no legal enforcement power, it marks an unprecedented collaboration between a federal regulatory agency and a professional sports league.
CFTC Chair Selig announced on X: “We’ve committed to work together to protect the integrity and resilience of prediction markets relating to professional baseball.”
The Connection Between Integrity Safeguards and This Partnership
This announcement arrives in the wake of significant developments from the previous year. November brought federal indictments against two pitchers from the Cleveland Guardians, accused of accepting payments from sports bettors to manipulate specific pitches during regular season games.
These allegations intensified scrutiny on baseball’s engagement with wagering platforms. MLB Commissioner Robert Manfred acknowledged this context in his public remarks.
“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.”
The partnership includes specific prohibitions designed to minimize integrity concerns. Polymarket and MLB mutually agreed to ban prediction markets focused on individual pitches, managerial choices, and umpire judgments.
Despite granting exclusive status to Polymarket, MLB clarified its intention to maintain existing relationships with other prediction market operators offering baseball-related contracts.
Regulatory Challenges Facing Prediction Market Platforms
Polymarket CEO Shayne Coplan characterized the partnership as an opportunity to enhance fan engagement while collaborating with oversight bodies to safeguard competitive integrity.
This development unfolds against a backdrop of heightened regulatory scrutiny from state authorities. Earlier this week, Arizona’s attorney general brought criminal allegations against Kalshi, a competing prediction market platform, claiming the company conducted unlicensed gambling operations within state borders.
Kalshi rejected the accusations, characterizing them as “meritless.” CFTC Chair Selig described Arizona’s action as “entirely inappropriate.”
The CFTC’s collaborative approach with MLB suggests federal support for prediction markets connected to athletic competitions, creating tension with state gambling authorities who argue these platforms should fall under sports betting regulations.
Baseball’s arrangement with Polymarket mirrors earlier agreements established by the National Hockey League, Major League Soccer, and the Ultimate Fighting Championship.
Polymarket maintains an additional data collaboration with Dow Jones, which publishes Barron’s.

