TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 16, 5:43 PM EST
Polymarket
This market refers to the tennis match between Darja Semenistaja and Teodora Kostovic in the Sao Paulo Open, originally scheduled for September 16, 2026 at 9:00AM ET. This market will resolve to 'Darja Semenistaja' if Darja Semenistaja advances against Teodora Kostovic. This market will resolve to 'Teodora Kostovic' if Teodora Kostovic advances against Darja Semenistaja. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 30, 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 Darja Semenistaja and Teodora Kostovic in the Sao Paulo Open, originally scheduled for September 16, 2026 at 9:00AM ET. This market will resolve to 'Darja Semenistaja' if Darja Semenistaja advances against Teodora Kostovic. This market will resolve to 'Teodora Kostovic' if Teodora Kostovic advances against Darja Semenistaja. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 30, 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.
Prediction market odds often reflect the collective wisdom of a diverse group of traders, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set their lines based on models and internal analysis, while this market is driven by individuals willing to put their capital behind their beliefs. It's common to see discrepancies, especially before significant events or when new information emerges. Comparing the odds can reveal where the crowd believes there's value, or where sportsbooks may be over- or under-estimating a player's chances in the Sao Paulo Open match.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome of the Sao Paulo Open match. The price of a share directly reflects 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 accordingly, creating a dynamic and real-time assessment of the event's potential results. The current price indicates what traders collectively believe is the likelihood of a particular player winning.
This market resolves around Sep 23, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Sao Paulo Open match between Darja Semenistaja and Teodora Kostovic. The platform will verify the winner against official tournament results and reporting, ensuring an accurate and transparent outcome. Traders will then be able to claim their winnings or adjust their strategies for future events based on the verified result of this market.
Several factors could influence the price of this market before the Sep 23, 2026 resolution date. Any news regarding player injuries, changes in playing conditions, or updated rankings could significantly shift trader sentiment. Unexpected results in earlier rounds of the Sao Paulo Open, or even commentary from tennis analysts, could also lead to price movements. Furthermore, large trades by influential market participants can create short-term volatility, reflecting a strong conviction in a particular outcome for the match between Darja Semenistaja and Teodora Kostovic.