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: Aug 31, 12:16 PM EST
Kalshi
This market tracks the outcome of the first set in a professional tennis match between two players at a major tournament. It determines which player will claim victory in that initial segment of play, reflecting early momentum and strategy. The result provides insight into how the match might unfold before progressing to later sets.
If Mananchaya Sawangkaew wins set 1 in the Mananchaya Sawangkaew vs Panna Udvardy professional tennis match in the 2026 US Open Women Singles Round Of 128, then the market resolves to Yes. If Panna Udvardy wins set 1 in the Mananchaya Sawangkaew vs Panna Udvardy professional tennis match in the 2026 US Open Women Singles Round Of 128, then the market resolves to Yes.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, traders collectively set the price through buying and selling contracts that represent each possible outcome. The current top chance reflects the market’s implied probability, derived from the ongoing balance of bids and asks. This mechanism allows rapid adjustment to new data, such as practice results or weather conditions, which can shift expectations for who might claim the first set.
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 record—specifically, which player is declared the winner of the first set. No internal platform mechanisms or arbitrary decisions are involved; the resolution relies on widely accepted match reports and statistics.
Key signals that could shift this market include last-minute player injuries, changes to starting lineups, or significant practice session performances shared on media platforms. Weather updates—if the match is outdoors—might also influence trader sentiment, as could commentary from coaches or analysts indicating strategic advantages. Any news that alters the perceived likelihood of either player dominating early exchanges can cause rapid price adjustments on Kalshi as traders react.