MLB Partners With Polymarket in Historic Prediction Market Agreement

Key Takeaways

Table of Contents

Polymarket has been designated as Major League Baseball’s exclusive prediction market partner in a landmark agreement
The platform gains exclusive rights to utilize MLB branding, official statistics, and promotional opportunities across league functions
A historic memorandum of understanding between MLB and the CFTC establishes information-sharing protocols for market integrity
This partnership emerges in the wake of criminal indictments against Cleveland Guardians pitchers involved in pitch-fixing schemes
Baseball becomes the latest major sports organization to embrace prediction market partnerships, joining soccer, hockey, and mixed martial arts leagues

Major League Baseball revealed on Thursday that Polymarket has secured the position of official prediction market partner, granting the platform exclusive authorization to use MLB intellectual property, official league data, and visibility at baseball events.

Major League Baseball has entered new agreements with Polymarket and the federal regulator that oversees prediction markets, formalizing the sports league’s involvement in the fast-growing industry https://t.co/M7m8z1mBSN

— Bloomberg (@business) March 19, 2026

According to initial reporting by Front Office Sports, this multi-season arrangement represents the newest chapter in an expanding trend of collaborations between prominent sports organizations and prediction market operators.

In conjunction with the Polymarket announcement, baseball’s governing body also formalized a memorandum of understanding with Commodity Futures Trading Commission Chair Michael Selig. This MOU creates a framework for mutual information exchange regarding prediction market safeguards and professional baseball operations.

While the agreement carries no legal enforcement mechanisms, it marks an unprecedented collaboration between a federal regulatory body and a major professional sports league.

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.”

The Integrity Component Behind the Partnership

This announcement’s timing connects directly to incidents from the previous season. Last November, criminal indictments were filed against two pitchers from the Cleveland Guardians, alleging they accepted payments from gamblers to manipulate specific pitches during official games.

These allegations thrust baseball’s gambling connections into the public discourse. Commissioner Robert Manfred confronted the issue head-on in his official statement.

“Protecting the integrity of the game on the field is our top priority,” Manfred stated. “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 terms of this arrangement, Polymarket and MLB have committed to prohibiting markets that present integrity concerns. Excluded categories include predictions on specific pitch outcomes, managerial choices, and umpire actions.

Despite granting Polymarket exclusive status, MLB confirmed it will maintain existing relationships with alternative prediction market platforms offering baseball-related contracts.

Regulatory Challenges Facing Prediction Markets

Polymarket CEO Shayne Coplan characterized the partnership as an opportunity to enhance fan engagement while collaborating with regulatory authorities to maintain competitive integrity.

This development arrives as prediction market platforms navigate intensifying scrutiny from state-level regulators. Earlier this week, Arizona’s attorney general brought criminal charges against Kalshi, a competing prediction market service, claiming the platform operated an unlicensed gambling enterprise within state boundaries.

Kalshi disputed the allegations, describing them as “meritless.” CFTC Chair Selig criticized Arizona’s charges as “entirely inappropriate.”

The CFTC’s collaborative approach with MLB signals federal regulatory endorsement of sports-related prediction markets, contrasting with state gambling regulators who maintain these platforms should fall under sports betting jurisdiction.

MLB’s arrangement with Polymarket mirrors comparable agreements established by the National Hockey League, Major League Soccer, and the Ultimate Fighting Championship.

Polymarket has also established a data collaboration agreement with Dow Jones, which publishes Barron’s.

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