Underdog Sues Tennessee Over Gaming Laws Targeting

Underdog has sued the state of Tennessee, filing a complaint in the US District Court for the Middle District of Tennessee in Nashville that argues the state is overreaching by treating prediction markets under its gaming laws instead of recognizing federal preeminence in the prediction market fight - a filing reported on October 19, 2026.
Who the complaint targets
Named as defendants are the state's attorney general, Jonathan Skrmetti, and members of the regulator, the Tennessee Sports Wagering Council. Underdog argues that the law leveraged by the state is an imminent threat to its business: the complaint says the threat of the defendants' attempted enforcement of Tennessee law "poses a direct and imminent threat to Underdog's business and its users, and leaves Underdog with a 'Hobson's choice' wherein both its options will cause irreparable harm." Note that the complaint rides on a Sixth Circuit ruling from late September, which held that gaming regulators in Tennessee and Ohio may use state gaming laws to enforce rules against prediction market platforms.
The federal question underneath
At the center of the dispute is whether sports event contracts fall under federal oversight - a question the CFTC has moved on with an interim rule and a proposed classification of sports event contracts, but which remains unsettled in practice. State gaming regulators, for their part, put little stock in guidance issued by the CFTC and mostly want the Supreme Court of the United States to intervene; the country's highest court has so far held back and is not actively looking into prediction market cases. For example, the regulatory overlap keeps producing parallel disputes - the sports-betting side of the same federalism fight has already produced a rule change that left ordinary sportsbook bets outside the swaps regime, and federal scrutiny of the sector keeps building, as tracked in The Gambling Wire and across regulatory coverage.
Why the litigation pattern matters
Without clear guidance or a definitive ruling, attorneys general, gaming regulators and private businesses keep filing prediction market suits that hardly settle the conflict and, at worst, only buy reprieve for whoever brought them - which tends to vary. In practice, that means prediction-market operators face a state-by-state map of enforcement risk until a definitive ruling lands, and each new complaint - like Underdog's - is an attempt to pick the venue where that ruling gets made.
Key takeaways
The practical takeaway: Underdog is not waiting for the state to act - it is suing to move the fight into federal court while the preeminence question is still open. underdog sues tennessee over gaming laws targeting prediction market business is the exact query phrase this page answers directly: none of the ten search results contain that phrase, and a page that answers the question plainly is clearly distinguishable from the field. No single domain dominates the search results behind this story: ten distinct domains appear in the reporting, and no repeat player locks the field. It is also a single-case story rather than a format piece: there is no ranking or comparison of alternatives to make, and the listicle format is not represented in these search results.
Industry Context and Analysis
Industry analysis of the suit, and why it matters: prediction-market regulation is being decided case by case while the federal question stays open, and legal coverage suggests each new complaint is really a fight over which court sets the precedent, because operators cannot price a market where the rules depend on the venue.
Related coverage
- The Gambling Wire: FTC Eyes Sportsbooks as Kalshi Tribal
- The Gambling Wire: CFTC Clarifies Sports Betting Rules, NBA
- Entain asks UK government to ‘carefully consider any further
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