Ohio & Polymarket now suing each other over sports contracts
Underdog & Polymarket are suing the state instead of complying with Ohio’s cease-&-desist orders.
The hit
Half of the 10 prediction market firms Ohio ordered to stop sports event contracts have now complied. Robinhood, Gemini, Moomoo Financial & Coinbase have agreed to halt new Ohio sports contracts, the Ohio Casino Control Commission told Legal Sports Report.
Why it matters
Ohio’s enforcement push, launched after a Sixth Circuit ruling against Kalshi, is forcing firms to pick a side: comply, sue, or keep talking to regulators. Polymarket’s lawsuit goes further, challenging Ohio’s licensing framework itself as unconstitutional discrimination against interstate commerce.
The record
| Cease-&-desist orders sent | 10 operators, 2 October (Ohio Casino Control Commission) |
|---|---|
| Compliance deadline set | 16 October (OCCC) |
| First to comply | Plus500US, confirmed 21 October (OCCC) |
| Coinbase compliance date | 13 November (OCCC) |
| Licensee warning deadline | 30 October, letter sent 20 October (OCCC) |
What happens next
Watch Coinbase’s 13 November compliance deadline, with Polymarket’s constitutional challenge to Ohio’s licensing rules the one to track.
Sources: Robinhood, Coinbase Among Four Firms Halting Ohio Sports Contracts
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