Major League Baseball (MLB) has officially named Polymarket as its exclusive prediction market exchange partner. This multi-year partnership, designates Polymarket as MLB’s “Official Prediction Market Exchange.”
It grants Polymarket and its brokers exclusive rights to use MLB marks, logos, and official league data to create and resolve prediction markets related to baseball events. Polymarket will also receive brand exposure across MLB’s digital platforms, events, and other marketing channels.
The deal aims to enhance fan engagement through predictive experiences tied to games and outcomes, while addressing concerns in the rapidly growing prediction market sector. A key component is a first-of-its-kind memorandum of understanding (MOU) between MLB Commissioner Rob Manfred and CFTC Chairman Michael S. Selig.
This agreement establishes an information-sharing framework to monitor and respond to integrity issues, such as potential manipulation, in real time. MLB emphasized proactive management of the space, noting that federal oversight under the CFTC helps streamline integrity efforts compared to state-by-state sports betting regulations.
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MLB Commissioner Rob Manfred stated: “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.” Reports suggest the deal could be worth around $300 million over three to four years, with a clause allowing termination if courts rule that prediction markets violate state laws.
This reflects ongoing regulatory tensions, as some states view these platforms as akin to gambling. Polymarket has pursued similar partnerships recently, positioning itself as a leader in crypto-based prediction markets for sports and events.
This move marks MLB’s entry into the prediction market arena, building on its existing sports betting relationships while prioritizing safeguards amid past integrity challenges in the sport. Major League Soccer (MLS) has entered a multi-year partnership with Polymarket, designating it as the league’s Official and Exclusive Prediction Market Partner.
Announced on January 26, 2026, by Soccer United Marketing (SUM)—MLS’s commercial arm—the deal makes Polymarket an Official Partner of Major League Soccer, the MLS All-Star Game, MLS Cup presented by Audi, and Leagues Cup in the United States.
This positions Polymarket as the exclusive platform for prediction markets tied to these events, allowing it to leverage MLS branding, logos, and official data to create and resolve relevant markets. The partnership focuses on boosting fan engagement through innovative, data-driven experiences on MLS digital platforms, particularly enhancing live match viewing and “second-screen” interactions.
MLS aims to integrate prediction market insights as a new way for fans to interact with the game, positioning the league as an early adopter among global soccer properties. MLS officials emphasized integrity safeguards, similar to their sports betting approach. Conversations with Polymarket began in mid-2025, with the league viewing the partnership as a way to oversee and influence markets on its competitions proactively—especially since Polymarket and others already offered MLS-related markets.
Chris Schlosser, MLS’s senior vice president of emerging ventures, highlighted the value of nationwide access in states without traditional sports betting. Shayne Coplan, Founder and CEO of Polymarket: “As soccer’s audience continues to grow and evolve in the U.S., fans are looking for new ways to engage more deeply with the game.
Through our partnership with MLS and Leagues Cup, we can surface real-time collective sentiment around key moments, matches, and season-long storylines.” MLS deputy commissioner Gary Stevenson: “Partnering with Polymarket allows us to integrate prediction markets as a new fan engagement format and position MLS as an early leader among global soccer properties.”
This marks Polymarket’s expansion into North American sports leagues, following its NHL partnership and preceding the MLB deal in March 2026. MLS joins the NHL and UFC as major entities embracing prediction markets, amid ongoing debates about integrity and gambling parallels.