TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 2, 3:13 PM EST
Kalshi
This event tracks the specific outcome of a tennis match between Marta Kostyuk and Sloane Stephens at the 2026 US Open Women Singles Round Of 64, focusing on the exact set scores that determine the winner. Bettors can speculate on whether the match will conclude with either player winning by particular set margins. The event accounts for various match disruptions, ensuring fair resolution even if the contest is altered or canceled.
The event resolves based on the exact set score of the Marta Kostyuk vs Sloane Stephens match in the 2026 US Open Women Singles Round Of 64. Four possible outcomes are considered: Marta Kostyuk winning 2-0, Marta Kostyuk winning 2-1, Sloane Stephens winning 2-1, or Sloane Stephens winning 2-0. If the match does not occur before any play due to injury, walkover, forfeiture, or cancellation, all markets resolve to a fair price. Postponements or delays keep markets open until the rescheduled match concludes, with resolution within two weeks. If a player retires during the match, markets that can be settled based on completed play resolve accordingly, while unresolved markets settle at a fair market price determined by the Exchange. The Exchange disclaims any official affiliation with the governing league, and all trademarks remain property of their respective owners.