If Zsombor Piros wins the Piros vs O'Connell professional tennis match in the 2026 US Open Men Singles Qualification Final after a ball has been played, then the market resolves to Yes.

Edge Cases

The following market refers to the Piros vs O'Connell professional tennis match in the 2026 US Open Men Singles Qualification Final after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

Resolution Oracles

Kalshi Rules

Polymarket

Primary Rule

This market refers to the tennis match between Zsombor Piros and Christopher O'Connell in the US Open, Qualification ATP, originally scheduled for August 27, 2026 at 11:00AM ET. This market will resolve to 'Zsombor Piros' if Zsombor Piros advances against Christopher O'Connell. This market will resolve to 'Christopher O'Connell' if Christopher O'Connell advances against Zsombor Piros. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 10, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Resolution Oracles

UMA Optimistic OracleConsensus of Sources

Polymarket US

Primary Rule

This market will settle to the winner of the Zsombor Piros vs Christopher O'Connell ATP match scheduled for August 27 at 10:00AM. If the match does not begin due to a walkover, forfeit, injury, or any other cancellation prior to the first point being played, the market will settle to fair market price. If a player retires during the match, the opponent will be recorded as the winner. Outcome sourced from ATP.

ProphetX

Primary Rule

Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules

Resolution Oracles

ProphetX Rules

Frequently Asked Questions

What does the Christopher O'Connell vs. Zsombor Piros prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket, ProphetX in one place. Each price reflects the market’s implied probability, not a guaranteed result.

What are the latest Christopher O'Connell vs. Zsombor Piros odds?

The latest available prices are Christopher O'Connell: 62.0¢ on Kalshi, 61.0¢ on Polymarket, 62.9¢ on ProphetX, 63.0¢ on Polymarket US; Zsombor Piros: 38.0¢ on Kalshi, 39.0¢ on Polymarket, 38.4¢ on ProphetX, 37.0¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity.

Why do Christopher O'Connell vs. Zsombor Piros odds vary across prediction markets?

The largest price difference shown across venues is 2.0 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do Christopher O'Connell vs. Zsombor Piros prediction market payouts work?

For example, Christopher O'Connell at 62.2¢ implies about a 62.2% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading.

Christopher O'Connell vs. Zsombor Piros

Christopher O'Connell vs. Zsombor Piros

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Christopher O'Connell vs. Zsombor Piros

Christopher O'Connell vs. Zsombor Piros

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About This Market

Price History

Live Markets

Moneyline

Smart Trade Router

Resolution Oracles

Market Rulebook: Christopher O'Connell vs. Zsombor Piros

Frequently Asked Questions