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MARKET RESOLVEDKalshi / Novig / Polymarket / ProphetX

Kimberly Birrell Wins: Kimberly Birrell vs. Katie Volynets

WTA·Resolved 2026-09-25

This market resolved on 2026-09-25. Kimberly Birrell was the officially declared outcome. Prior to resolution, the market peaked at 70%.

About This Market

Kimberly Birrell vs.

Kimberly Birrell vs. Katie Volynets: WTA Tennis match held on 2026-09-25. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.

Price History

Multi-Platform Probabilities

Learn more:How to Read Prediction Market Prices Compare Fees Before You Trade New to Polymarket?

Final Closing Odds

4 platforms

Candidate
Total over 22.5	—	—	100%	—
Kimberly BirrellWINNER	99%	67%	70%	70%
Katie Volynets spread minus 4.5	—	—	53%	—
Total under 21.5	—	—	53%	—
Total under 23.5	—	—	51%	—
Total over 23.5	—	—	49%	—
Kimberly Birrell spread plus 4.5	—	—	47%	—
Total over 21.5	—	—	47%	—
Katie Volynets	1%	34%	31%	70%
Total under 22.5	—	—	1%	—
Over 15.5 games	—	—	—	—
Over 20.5 games	—	—	—	—
Over 25.5 games	—	—	—	—

Market RulebooksOfficial settlement criteria and edge cases

Official settlement criteria, resolution sources, and edge cases across Kalshi and Novig and Polymarket and ProphetX.

Rules for Candidate:

Kalshi

Primary Rule

If Katie Volynets wins the Volynets vs Birrell professional tennis match in the 2026 WTA Seoul Quarterfinal after a ball has been played, then the market resolves to Yes.

Edge Cases

The following market refers to the Volynets vs Birrell professional tennis match in the 2026 WTA Seoul Quarterfinal 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

Novig

Primary Rule

Katie Volynets in Kimberly Birrell @ Katie Volynets Quarterfinals (WTA); settled by Novig.

Polymarket

Primary Rule

This market refers to the tennis match between Katie Volynets and Kimberly Birrell in the Korea Open, originally scheduled for September 24, 2026 at 11:00PM ET. This market will resolve to 'Katie Volynets' if Katie Volynets advances against Kimberly Birrell. This market will resolve to 'Kimberly Birrell' if Kimberly Birrell advances against Katie Volynets. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 8, 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 WTA Tour. A consensus of credible reporting may also be used.

Resolution Oracles

UMA Optimistic OracleConsensus of Sources

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 Kimberly Birrell vs. Katie Volynets prediction market track?

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

What were the last available Kimberly Birrell vs. Katie Volynets odds?

The last available prices are Kimberly Birrell: 99.0¢ on Kalshi, 69.5¢ on Polymarket, 69.7¢ on ProphetX, 67.0¢ on Novig; Katie Volynets: 1.0¢ on Kalshi, 30.5¢ on Polymarket, 70.1¢ on ProphetX, 34.0¢ on Novig. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.

Why do Kimberly Birrell vs. Katie Volynets odds vary across prediction markets?

The largest price difference shown across venues is 69.1 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 Kimberly Birrell vs. Katie Volynets prediction market payouts work?

For example, Kimberly Birrell at 76.3¢ implies about a 76.3% 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. Historical prices alone do not identify the winning outcome.

Kimberly Birrell Wins: Kimberly Birrell vs. Katie Volynets

About This Market

Price History

Kimberly Birrell Wins: Kimberly Birrell vs. Katie Volynets

About This Market

Price History

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Final Closing Odds

Resolution Oracles

Frequently Asked Questions

Kimberly Birrell Wins: Kimberly Birrell vs. Katie Volynets

About This Market

Price History

Kimberly Birrell Wins: Kimberly Birrell vs. Katie Volynets

About This Market

Price History

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Final Closing Odds

Resolution Oracles

Market Rulebook: Kimberly Birrell vs. Katie Volynets

Frequently Asked Questions