TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 15, 11:47 AM EST
Polymarket
This market refers to the tennis match between Teodora Kostovic and Victoria Barros in the Sao Paulo Open, originally scheduled for September 14, 2026 at 9:00AM ET. This market will resolve to 'Teodora Kostovic' if Teodora Kostovic advances against Victoria Barros. This market will resolve to 'Victoria Barros' if Victoria Barros advances against Teodora Kostovic. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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 Teodora Kostovic and Victoria Barros in the Sao Paulo Open, originally scheduled for September 14, 2026 at 9:00AM ET. This market will resolve to 'Teodora Kostovic' if Teodora Kostovic advances against Victoria Barros. This market will resolve to 'Victoria Barros' if Victoria Barros advances against Teodora Kostovic. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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.
Typically, prediction market odds reflect the wisdom of the crowd and can differ from traditional sportsbook odds. Sportsbooks set lines based on their own models and aim to balance action on both sides, incorporating a profit margin. This market, however, is driven by individuals trading based on their own research and beliefs. If a significant number of people believe one outcome is more likely than implied by sportsbook odds, the price on Polymarket will adjust accordingly. It's common to see discrepancies, especially as new information emerges or public sentiment shifts.
On Polymarket, this market is priced through a continuous trading mechanism where users buy and sell shares representing their belief in each outcome. 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 prices will fluctuate, providing a dynamic assessment of the potential results of the Sao Paulo Open match. The current trading volume indicates the level of interest and conviction surrounding different outcomes.
This market resolves around Sep 21, 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 Teodora Kostovic versus Victoria Barros match at the Sao Paulo Open. The platform will verify the result against trusted sources to determine which outcome corresponds to the actual event winner. Traders holding shares in the winning outcome will be entitled to a payout, as determined by the final market price at the time of resolution.
Several factors could influence trading activity in this market before Sep 21, 2026. Any news regarding player injuries, changes in playing conditions, or updated match analysis from tennis experts could cause shifts in sentiment. Unexpected results in other matches involving these players, or broader trends in the Sao Paulo Open tournament, could also impact the odds. Furthermore, large trades by influential market participants on Polymarket could create momentum and drive price movements, reflecting a change in perceived probabilities.