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 1, 3:45 PM EST
Kalshi
This market focuses on determining which player will win the first set of a tennis match between Yuliia Starodubtseva and Ella Seidel at the 2026 US Open. The outcome depends solely on the result of the initial set, regardless of how the overall match proceeds. Settlement considers potential match disruptions such as injuries, cancellations, or retirements.
If Yuliia Starodubtseva wins set 1 in the Yuliia Starodubtseva vs Ella Seidel professional tennis match in the 2026 US Open Women Singles Round Of 128, then the market resolves to Yes. If Ella Seidel wins set 1 in the Yuliia Starodubtseva vs Ella Seidel professional tennis match in the 2026 US Open Women Singles Round Of 128, then the market resolves to Yes.
This market resolves around Aug 30, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match records, which will declare the winner of the first set. Traders can track confirmed results through sports news outlets, tournament websites, and accredited statistics providers, ensuring transparency and reliability once the match concludes.
Several signals could shift this market before it settles. Key updates include player injuries, recent form in practice sessions, weather conditions affecting play, and strategic adjustments made by coaches. High-profile analyst commentary or betting trends on Kalshi may also influence trader sentiment. As the match nears, any last-minute news — such as a surprise lineup change or performance metrics from warm-ups — can cause rapid swings in odds and volume.