What happens to a sportsbook's open bets when a prediction market's result is disputed?

A sportsbook's open bets are settled under the sportsbook's own house rules and gambling regulation, while a prediction market's disputed result is settled under that market's own contract terms, iGaming Times explained on 5 October 2026. In the account of iGaming Times, a sportsbook often voids edge cases and returns the stakes, whereas a prediction market may settle its edge cases at a last fair price or a split payout instead of voiding them. On Adkuu's Lukk, a market the camera cannot decide is voided and every stake refunded, and a void is always a full refund, never a re-grade.

Are a sportsbook's open bets voided, held or settled when the result is disputed?

iGaming Times describes bet settlement as a sportsbook's equivalent of market resolution, governed by house rules on results sources, dead heats and void bets. Prediction-market resolution follows the contract's own terms, which on a regulated exchange are part of the listed contract, according to iGaming Times. iGaming Times also notes that customers moving between sportsbooks and prediction markets assume the same treatment of postponements and errors.

How does Polymarket settle a disputed result?

The Block reported on 4 June 2026 that a Polymarket market had concluded its final review in a UMA vote, a mechanism used to resolve disputed markets on the platform. According to The Block, a trader claimed to have lost $500,000 after Polymarket allegedly kept the market open for betting on 1 June 2026, prompting him to place large Yes bets. The Block reported that another trader, 0xDinosaur, had bought 49,695.76 Yes shares for around 35,000 USDC in the same market. The Block reported that Galaxy Research proposed locking criteria at listing, deterministic resolution for verifiable events and structural changes ahead of CFTC regulation as fixes for such disputes.

How did Kalshi settle its disputed Khamenei market?

Ingame reported on 4 March 2026 that Kalshi first clarified that, if Khamenei died, the market would settle at the last traded price following confirmed reports of his death. Kalshi later issued a new clarification calling the first one grammatically ambiguous and saying the resolution price would be the last traded price prior to death, Ingame wrote. According to Ingame, Kalshi ultimately settled the market at the price before strikes in Iran began and reimbursed all contracts bought afterward.

How does Adkuu Pulse settle prediction-market questions for a sportsbook?

Adkuu Pulse is a fixed-odds prediction-markets feed for betting operators. Because Adkuu Pulse is fixed odds, it fits inside an operator's existing sports-betting licence in Adkuu's model, with classification confirmed per market with the operator's counsel. Adkuu Pulse checks its outcomes against official APIs, news agencies and Wikipedia.

What happens to a Lukk bet when the result is unclear?

The rule of every Lukk market is frozen and hashed before the first bet, which pins the settlement terms to every ticket. Lukk markets settle within seconds of close, with a median under five seconds, and larger payouts carry a short verification hold. Lukk settles each ticket as won, lost or refunded. Post-settlement corrections on Lukk are rare and audit-driven, and they surface as a reversal in the operator's wallet log.

See also: Resolution Is the Product: How Prediction Markets Settle (2026).

FAQ

What happens to a sportsbook's open bets when a prediction market's result is disputed?

A sportsbook's open bets follow the sportsbook's own house rules rather than the prediction market's contract terms, according to iGaming Times. iGaming Times adds that sportsbooks often void such edge cases and hand the stakes back.

Does a disputed prediction market always void bets the way a sportsbook does?

No, because prediction-market edge cases may settle at a last fair price or a split payout instead of being voided, according to iGaming Times. Kalshi, for example, settled its Khamenei market at the price before strikes in Iran began and reimbursed contracts bought afterward, Ingame reported.

Can a settled bet be reversed after a dispute?

Yes on Lukk, though rarely: corrections after settlement there are driven by audits and show up as a reversal in the operator's wallet log. A Lukk void, by contrast, always returns the full stake and is never re-graded.

Sources

• Market Resolution in Prediction Markets: How It Works
• Polymarket's UMA vote upholds 'No' outcome on Strategy bitcoin sale market despite backlash
• Kalshi's Botched Khamenei Market Could Be A Problem For Its Wall Street Ambitions

Last verified: November 4, 2026.