![\"NFL](\"https:\/\/s3-images.ctmedia.io\/media\/article-covers\/2026\/10\/01M4E1T9RDDQM4RHT8VGKG97F0\/hi-nfl-players-choosing-crypto-over-cash2.jpg\")
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According to the league, Kalshi and other prediction markets \u201cthreaten game integrity\u201d because many event contracts are \u201chighly susceptible to manipulation.\u201d<\/p>\n
The National Football League (NFL) largely sided with New Jersey officials in their petition for the Supreme Court to consider a case on sports bets through prediction markets platforms\u00a0<\/p>\n
In an amicus brief filed with the US Supreme Court on Wednesday, the NFL called<\/a> on the justices to grant a petition for a writ of certiorari from New Jersey Attorney General Jennifer Davenport and gaming enforcement interim director Mary Jo Flaherty. The filing came in response to New Jersey officials petitioning the court<\/a> to consider its case against Kalshi, potentially resolving whether the jurisdiction of prediction market companies falls under state authorities or federal agencies.<\/p>\n The football league supported many of the New Jersey authorities\u2019 arguments, including that the case addresses potential issues with labeling sporting-event contracts on prediction market platforms as \u201cswaps\u201d and that it should be reviewed to \u201cpreserve game integrity\u201d and \u201cprotect customers.\u201d The group cited data showing that on the first Sunday of the football season, \u201cmore than half of all prediction-markets\u2019 trading volume,\u201d about $1.8 billion of $3.3 billion, related to the NFL.<\/p>\n