TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 5, 3:12 PM EST
Polymarket
This market refers to the tennis match between Mirra Andreeva and Nikola Bartunkova in the US Open WTA, originally scheduled for September 5, 2026 at 11:00AM ET. This market will resolve to 'Mirra Andreeva' if Mirra Andreeva advances against Nikola Bartunkova. This market will resolve to 'Nikola Bartunkova' if Nikola Bartunkova advances against Mirra Andreeva. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 19, 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 Mirra Andreeva and Nikola Bartunkova in the US Open WTA, originally scheduled for September 5, 2026 at 11:00AM ET. This market will resolve to 'Mirra Andreeva' if Mirra Andreeva advances against Nikola Bartunkova. This market will resolve to 'Nikola Bartunkova' if Nikola Bartunkova advances against Mirra Andreeva. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 19, 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 offer a different perspective than those found at traditional sportsbooks. Sportsbooks typically incorporate a 'vig' or commission into their odds, while prediction markets allow traders to directly assess probabilities. This can lead to discrepancies, with this market potentially reflecting a more accurate assessment of the true likelihood of each player winning. However, sportsbook odds are readily available and widely publicized, serving as a common benchmark for comparison. Discrepancies can arise due to differing information sources, biases, or simply varying levels of market participation.
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 Andreeva-Bartunkova match. The price of these shares directly reflects the implied probability of each outcome. 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 market’s price is determined solely by supply and demand among traders on Polymarket.
This market resolves around Sep 12, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Andreeva-Bartunkova match as reported by the official tournament organizers. The market will determine which player won the match, and the outcome will be based on the official record. Any disputes regarding the official result will be resolved based on widely accepted sources of information related to the US Open tournament.
Several factors could influence the trading activity in this market before Sep 12, 2026. Any news regarding player injuries, changes in playing conditions, or updated match analysis from tennis experts could shift trader sentiment. Unexpected results in earlier rounds of the tournament involving either player could also impact the odds. Furthermore, significant betting activity from informed traders or large volume purchases could signal a change in expectations. Public perception, as reflected in social media or sports news, can also contribute to price movements in this market.