TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 9, 1:16 PM EST
Polymarket
This market refers to the tennis match between Xinran Sun and Kristina Penickova in the US Open Juniors, Girls, originally scheduled for September 9, 2026 at 11:00AM ET. This market will resolve to 'Xinran Sun' if Xinran Sun advances against Kristina Penickova. This market will resolve to 'Kristina Penickova' if Kristina Penickova advances against Xinran Sun. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 23, 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 Xinran Sun and Kristina Penickova in the US Open Juniors, Girls, originally scheduled for September 9, 2026 at 11:00AM ET. This market will resolve to 'Xinran Sun' if Xinran Sun advances against Kristina Penickova. This market will resolve to 'Kristina Penickova' if Kristina Penickova advances against Xinran Sun. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 23, 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.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in each player's chance of winning. The price of a share directly corresponds to the implied probability of that outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and express their views, the price adjusts to reflect the collective assessment of the players' chances. The market's efficiency is driven by the incentive for traders to accurately predict the outcome, as correct predictions yield profits.
This market resolves around Sep 16, 2026, with the outcome confirmed once the winner of the US Open Juniors Girls match is verifiable from credible public reporting. The resolution will be based on the official results published by the tournament organizers. The platform will then determine the winning shares and distribute payouts to those who correctly predicted the outcome. Traders should monitor official sources for the final result to understand when the market will be settled.
Several factors could influence this market before the match concludes. Any news regarding player injuries, changes in playing conditions, or even significant shifts in public perception could cause the odds to move. Unexpected results in earlier rounds of the tournament for either player could also impact the market, as it reassesses their overall form and chances of success. Furthermore, any analysis from tennis experts or commentators could sway trader sentiment and lead to adjustments in the price of shares on Polymarket.