TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 5, 11:43 PM EST
Polymarket
This market tracks whether Yulia Starodubtseva will advance against Elena Rybakina in their US Open WTA match, originally scheduled for September 5, 2026 at 11:00AM ET. Currently, Polymarket gives a 100.0% probability to “US Open WTA: Completed Match: Yulia Starodubtseva vs Elena Rybakina”. Resolution will be based on the official results reported at https://www.wtatennis.com/scores. Keep an eye on the match itself, as the outcome will be determined by the completion of the fixture on or before the resolution date of September 12, 2026.
This market refers to the tennis match between Yulia Starodubtseva and Elena Rybakina in the US Open WTA, originally scheduled for September 5, 2026 at 11:00AM ET. This market will resolve to 'Yulia Starodubtseva' if Yulia Starodubtseva advances against Elena Rybakina. This market will resolve to 'Elena Rybakina' if Elena Rybakina advances against Yulia Starodubtseva. 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.
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 Rybakina vs Starodubtseva match. The price of these shares fluctuates based on supply and demand, effectively creating a probability estimate. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The higher the demand for shares in a particular outcome, the higher the price, and thus the greater the implied probability. This dynamic pricing allows the market to incorporate new information and adjust expectations as the event approaches.
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 Rybakina vs Starodubtseva match as reported by a recognized tennis authority. The platform will verify the result against these sources to determine which outcome corresponds to the actual event outcome. Traders who correctly predicted the result will be paid out according to the final market prices at resolution.
Several factors could influence the trading activity in this market. Any news regarding player injuries, changes in playing conditions, or updates on their recent performance could significantly shift the odds. Unexpected upsets in other matches within the US Open could also impact perceptions of player form and confidence. Furthermore, major shifts in public sentiment, potentially driven by social media or expert analysis, could lead to increased trading volume and price fluctuations as traders adjust their positions based on new information.