Major League Baseball has finalized a multiyear prediction markets deal. MLB and Polymarket agreed to establish the platform as the official prediction market exchange for the league. This partnership marks a significant entry into the sector for the organization as it seeks to manage the growing popularity of event contracts. Alongside the commercial deal, the league has signed a memorandum of understanding with the Commodity Futures Trading Commission to create a framework for information sharing and market oversight.
The collaboration between MLB and Polymarket provides the exchange with exclusive rights to use league trademarks and logos within its products. Polymarket will also have access to official league data through Sportradar to settle its markets. In exchange, the league gains a direct role in shaping the types of contracts offered to the public. Under the terms of the agreement, Polymarket has committed to restricting markets that the league identifies as high risks to integrity. These restricted categories include specific on field events such as individual pitch results, umpire performance, and managerial decisions.
The separate agreement with the Commodity Futures Trading Commission establishes a formal channel for the league and federal regulators to discuss emerging trends and share data regarding potential market manipulation. This memorandum is the first of its kind between a professional sports league and the commission. It is designed to help both parties identify and respond to suspicious trading activity more effectively. Commissioner Rob Manfred stated that the agreements are necessary steps to proactively manage the prediction market space while making the protection of game integrity a top priority.
The MLB and Polymarket move follows similar entries into prediction markets by other major sports organizations including the National Hockey League and Major League Soccer. It also comes amid increased regulatory scrutiny of the industry as several states and federal agencies continue to debate the legal status of event contracts. By establishing these formal ties, the league aims to create clear boundaries for fan engagement while mitigating the risks associated with unregulated trading. Polymarket leadership noted that the partnership is intended to provide fans with new ways to engage with baseball while working collaboratively with regulators to ensure the long term credibility of the market. The agreement includes provisions to void the contract if future court rulings find that such prediction markets violate state laws.

