Major League Baseball (MLB) has entered into an exclusive partnership with Polymarket, allowing the prediction market platform to use MLB's trademarks and logos. Polymarket will also receive promotional placement on MLB's official website and at game venues. This collaboration aims to manage the growing prediction market space, with MLB working alongside Polymarket to restrict trading on contracts that could compromise game integrity. Additionally, MLB has signed a memorandum of understanding with the U.S. Commodity Futures Trading Commission (CFTC) to facilitate information sharing and protect event integrity. The CFTC is seeking to establish itself as the primary regulator of prediction markets, amidst state-level disputes over whether these markets fall under gambling regulations. Recently, Arizona's Attorney General filed charges against Kalshi, accusing it of operating an illegal gambling platform, a move criticized by Kalshi's CEO and the CFTC Chair as an overreach.