Prediction markets ink league deals

Prediction-market companies are now buying official league sponsorships, putting Polymarket alongside Major League Baseball, Major League Soccer, the National Hockey League, the Ultimate Fighting Championship and Spain’s LaLiga. (bettorsinsider.com) The run accelerated in the past six months. The National Hockey League announced multiyear United States agreements with Polymarket and Kalshi on October 22, 2025, and Major League Soccer announced a multiyear Polymarket deal on January 26, 2026. (nhl.com) (mlssoccer.com) Major League Baseball joined on March 19, 2026, naming Polymarket its official prediction market exchange partner. On April 2, 2026, LaLiga said Polymarket became its official partner in the United States and Canada. (mlb.com) (laliga.com) A prediction market lets users buy contracts tied to an outcome, like a team winning a title, instead of placing a standard sportsbook wager. In the United States, companies argue those contracts fall under federal commodities law rather than state gambling law. (cftc.gov) (ncsl.org) That legal distinction is why leagues can sign these deals while the regulatory fight is still open. The Commodity Futures Trading Commission said in March that it has exclusive jurisdiction over prediction markets, while the National Conference of State Legislatures said more than 20 lawsuits and cease-and-desist actions were pending nationwide as of early 2026. (cftc.gov) (ncsl.org) The sponsorship packages look familiar to anyone who has watched the sportsbook boom. Major League Soccer said Polymarket will be the official and exclusive prediction market partner of Major League Soccer, the Major League Soccer All-Star Game, Major League Soccer Cup and Leagues Cup, while the Ultimate Fighting Championship said Polymarket will appear in arena activations and custom digital and social content. (mlssoccer.com) (ufc.com) Major League Baseball paired its sponsorship with an integrity agreement. The league said Commissioner Robert Manfred signed a memorandum of understanding with Commodity Futures Trading Commission Chairman Michael Selig to share information and respond faster to integrity issues. (mlb.com) Regulators are also warning that faster growth brings surveillance problems. The Commodity Futures Trading Commission issued an enforcement advisory on February 25, 2026, after two public cases involving misuse of nonpublic information and fraud in prediction markets, and a market-oversight advisory on March 5, 2026, reminding exchanges of their listing obligations. (cftc.gov 1) (cftc.gov 2) Sportsbooks and state regulators are pushing back. Stateline reported in March that states say platforms such as Kalshi and Polymarket are skirting sports-betting laws, and the American Gaming Association said prediction-market operators should either leave sports betting or follow the same state rules, taxes and consumer-protection standards as sportsbooks. (stateline.org) (americangaming.org) For leagues, the immediate result is simpler than the legal briefs. A new class of sponsor is buying inventory that, until recently, mostly belonged to sportsbooks, and more rights packages are now being negotiated around that split. (bettorsinsider.com)