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$154.4b
24H VOL:
$235,918,089
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2,984,028,936
OPEN INTEREST:
$1,884,820,873
413,109
Markets across
40,428
events
MATCHED EVENTS:
4,364
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 5, 6:41 AM EST
Polymarket
This market refers to the tennis match between Jelena Ostapenko and Elise Mertens in the China Open, originally scheduled for October 4, 2026 at 11:00PM ET. This market will resolve to 'Jelena Ostapenko' if Jelena Ostapenko advances against Elise Mertens. This market will resolve to 'Elise Mertens' if Elise Mertens advances against Jelena Ostapenko. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 18, 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.
This market refers to the tennis match between Jelena Ostapenko and Elise Mertens in the China Open, originally scheduled for October 4, 2026 at 11:00PM ET. This market will resolve to 'Jelena Ostapenko' if Jelena Ostapenko advances against Elise Mertens. This market will resolve to 'Elise Mertens' if Elise Mertens advances against Jelena Ostapenko. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 18, 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.
Often, prediction market odds reflect a different perspective than those found at traditional sportsbooks. Sportsbooks typically set lines to balance action and incorporate a profit margin, while this market represents the collective wisdom of traders who are incentivized to accurately forecast the outcome. Discrepancies can arise due to differing information, biases, or simply varying interpretations of the players’ form. It's common to see prediction markets move more efficiently based on new information, potentially offering insights beyond standard betting lines.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the outcome. The price of a share directly corresponds to the probability of that outcome occurring, as perceived by the market participants. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the price adjusts dynamically, reflecting the evolving consensus. This creates a fluid and responsive pricing system driven by supply and demand.
This market resolves around Oct 12, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Ostapenko vs Mertens match as declared by the tournament organizers. The outcome will be determined by who wins the match, and the market will settle to 100% for the winning player. Traders who correctly predicted the winner will receive a payout based on the final share price.
Several factors could influence this market leading up to the match. Any news regarding player injuries, changes in playing conditions, or updated performance statistics could shift trader sentiment. Unexpected results in other matches involving these players, or even broader trends in tennis form, might also play a role. Furthermore, significant betting activity or large trades on Polymarket itself can create momentum and drive price movements, reflecting a change in perceived probabilities.