Polymarket, Kalshi and Novig have signed deals with New York's largest sports franchises — the Yankees, Mets, Rangers and Madison Square Garden — even as state authorities classify their contracts as unlicensed betting and pursue legal action. Platform branding now appears on stadiums alongside licensed sportsbooks such as FanDuel and Caesars.
The partnerships include LED boards, behind-home-plate rotation during broadcasts and branded concourses. Madison Square Garden renamed its sixth-floor concourse the Kalshi Concourse. Polymarket announced its Yankees deal on 6 August, Novig signed with the Mets on 30 July. Fans see prediction-market logos in the same arenas where licensed operators already hold official status.
New York Attorney General Letitia James warned that advertising unlicensed wagering violates state law and carries civil or criminal liability. The state gaming commission barred Kalshi from marketing to New York residents. Both firms sued in response. Kalshi filed in October 2025, Novig on 4 August after launching event contracts. Both cite the federal Commodity Exchange Act. New York countersued Kalshi on 31 July. Courts have so far denied motions for interim relief.
Grey-zone playbook
Industry lawyers draw comparisons to daily fantasy sports, which operated in legal limbo for years until mass adoption made rollback harder than regulation. Evan Davis of RCCB calls prosecution of the teams unlikely while the status of prediction markets remains contested. David Farahi, former president of the Colorado Gaming Association, believes the platforms are deliberately running out the clock toward a Supreme Court ruling. DraftKings, FanDuel and Fanatics have each launched prediction-market products as a hedge. Land-based casinos are calling for regulatory clarity.
