- MLB officially names Polymarket its exclusive prediction market exchange partner with access to league data, logos and branding.
- The league signs a memorandum of understanding with the CFTC for confidential information sharing on market integrity issues.
- Agreement restricts high-risk markets such as individual pitches, manager decisions and umpire calls while requiring uniform standards across platforms.
- The pact, announced March 19, 2026, follows MLB’s letter to the CFTC one year earlier calling for stronger protections.
Major League Baseball has taken a decisive step to formalize its relationship with the prediction market sector, naming Polymarket its official and exclusive partner while forging a regulatory alliance with the Commodity Futures Trading Commission.
On March 19, 2026, the league announced two interlocking agreements designed to protect game integrity while enabling structured fan engagement through prediction markets. MLB Commissioner Robert D. Manfred, Jr. and CFTC Chairman Michael S. Selig signed a memorandum of understanding that establishes confidential information sharing and regular meetings between designated representatives to address emerging trends and incidents.
In the official MLB press release, Manfred emphasized that “the new agreements that we formed with Polymarket and the CFTC are imperative steps in proactively managing the new and rapidly growing prediction market space. Protecting the integrity of the game on the field is our top priority.”
The partnership grants Polymarket exclusive rights to use MLB marks, logos and Official League Data provided through Sportradar. In return, the platform must integrate integrity controls into its U.S. rulebook, including restrictions on markets deemed to present risk. The report highlights that the CFTC-MLB arrangement is the first of its kind in overseeing sports events contracts.
Polymarket Founder and CEO Shayne Coplan welcomed the collaboration, stating that “by working collaboratively with Major League Baseball and regulators, we can create new ways for fans to engage with the game while protecting the integrity of the sport.” The framework also requires other prediction market operators offering baseball contracts to adopt equivalent protections.
The development arrives as prediction markets continue to attract institutional and retail interest, underscoring the sector’s shift toward regulated, transparent operations. MLB intends to maintain similar integrity relationships with all participating platforms.
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