Major League Baseball has named Polymarket its exclusive official prediction market partner, granting the platform access to MLB branding, official data via Sportradar, and promotional rights across league channels.
Commissioner Rob Manfred also signed a memorandum of understanding with the Commodity Futures Trading Commission (CFTC) to enable confidential information-sharing aimed at protecting the integrity of baseball-related prediction markets.
The partnership centers on a shared integrity framework that restricts high-risk markets-such as those tied to individual pitches, managerial calls, or umpire performance. Polymarket will embed these standards into its U.S. rulebook for all brokers.
While Polymarket holds exclusive status, MLB plans to require all other prediction platforms offering baseball contracts to adopt similar integrity safeguards.
The move follows heightened scrutiny of insider trading on prediction markets, including a controversial $400,000 Polymarket bet on Venezuela’s political upheaval hours before it unfolded. Recent legislative proposals like the BETS OFF Act seek to ban wagers on sensitive geopolitical events.
CFTC Chairman Michael Selig called the MOU a “collaborative step” to combat fraud and manipulation in this emerging market space.