Shayne Coplan, CEO of Polymarket, at the New York Stock Exchange (NYSE) in New York, United States on Thursday, November 13, 2025.
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Major League Baseball announced Thursday that it is naming Polymarket its official predictions marketplace partner. The association also signed a memorandum of understanding with Commodity Futures Trading Commission Chairman Michael Selig.
According to the announcement, Polymarket and its brokers will gain exclusive access to official MLB logos and data and receive “brand exposure” at league events. MLB said the agreement will include a “comprehensive integrity framework.”
“Polymarket aims to bring fans closer to the moments that define sports,” Shayne Coplan, CEO of Polymarket, said in a statement. “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.”
As part of the agreement with Selig, MLB said it established a “clear intent” to share information with the CFTC regarding prediction markets. Although Polymarket will have exclusive rights, MLB said it will maintain relationships with other prediction exchanges offering baseball contracts.
Polymarket and MLB also said they would work together to “restrict markets that pose an integrity risk to MLB, such as individual pitches, manager decisions and umpire performance, among others,” adding that Polymarket would restrict event contracts that pose an “integrity risk” to the game.
The deal comes as concerns over betting and sports have grown. Last year, two Cleveland Guardians pitchers were indicted for accepting bribes from sports bettors as part of a scheme to rig bets on pitches thrown during MLB games.
“Protecting the integrity of the game on the field is our top priority,” MLB Commissioner Robert Manfred said. “By engaging in this community, we are able to work together to create clear boundaries with the goal of mitigating risk while providing engagement opportunities for fans.”
Prediction markets have grown in popularity, allowing users to trade on events ranging from sports to politics to pop culture. They have also faced scrutiny due to allegations of insider trading and lack of regulation.
This announcement follows Major League Soccer’s partnership with Polymarket earlier this year. The National Hockey League was the first major sports league to announce a prediction markets partnership last October.
Disclosure: CNBC and Kalshi Prediction Market have a business relationship that includes a minority investment in CNBC.