Polymarket CEO Shayne Coplan on the floor of the New York Stock Exchange (NYSE) on Thursday, November 13, 2025 in New York, USA.
Michael Nagle | Bloomberg | Getty Images
Major League Baseball announced Thursday that it has named Polymarket its official prediction market partner. The association also signed a memorandum of understanding with Commodity Futures Trading Commission Chairman Michael Selig.
According to the announcement, Polymarket and its intermediaries will have exclusive access to MLB’s logo and official data and will receive “brand exposure” throughout league events. MLB said the agreement includes a “comprehensive integrity framework.”
“Polymarket aims to bring fans closer to the moments that define sports,” Polymarket CEO Shayne Coplan said in a statement. “By working with Major League Baseball and regulators, we can create new ways for fans to participate in the game while protecting the integrity of the sport.”
Under its agreement with Selig, MLB said it established a “clear intent” to share information related to prediction markets with the CFTC. Although Polymarket will have exclusive rights, MLB said it will maintain relationships with other prediction market exchanges that offer baseball contracts.
Polymarket and MLB also said they will work together to “limit markets that pose an integrity risk to MLB, such as individual pitching, manager decisions, and umpire performance,” adding that Polymarket will limit event contracts that pose an “integrity risk” to games.
The agreement comes amid growing concerns about gambling and sports. Last year, two Cleveland Guardians pitchers were indicted on charges of accepting bribes from sports bettors as part of a fraudulent gambling scheme 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 joining this community, we can work together to set clear boundaries with the goal of mitigating risk while providing opportunities for engagement with our fans.”
Prediction markets have skyrocketed in popularity, allowing users to trade events ranging from sports to politics to pop culture. It has also come under intense scrutiny over allegations of insider trading and a lack of regulation.
The 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 market partnership last October.
Disclosure: CNBC and Prediction Markets Calci have a commercial relationship that includes a minority investment in CNBC.
