TOTAL VOLUME:
$134.2b
24H VOL:
$129,159,707
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,442,132,418
404,744
Markets across
30,489
events
MATCHED EVENTS:
2,691
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 31, 5:00 PM EST
Kalshi
This market focuses on determining which player will win the third set of a specific tennis match at the 2026 US Open. It reflects the competitive performance of the two athletes in a high-stakes Grand Slam tournament. The outcome depends entirely on the match's progression and final result in Set 3.
The market resolves based on which player wins the third set of the Brandon Nakashima vs. Sebastian Baez match in the 2026 US Open Men Singles Round of 128. If the match does not commence due to injury, walkover, forfeiture, or cancellation before any play begins, the market settles at a fair price. Postponements or delays allow the market to remain open until the rescheduled match concludes within two weeks. In cases of retirement during the match, any markets that can be definitively settled based on completed play will do so, while unresolved markets will settle at a fair market price determined by the Exchange. Kalshi disclaims any official affiliation with the governing league, and all trademarks remain property of their respective owners.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, traders determine prices through continuous bidding and asking, with the top outcome's current chance reflected in its market price. The platform's liquidity and trader participation shape the available odds at any moment, allowing rapid adjustments as new data emerges from the match. This decentralized pricing captures the collective wisdom of Kalshi participants, often responding faster than traditional sportsbooks to in-game developments that could influence the third set.
This market resolves around Aug 30, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The winner of the third set will be determined by the official match result, and that data will be used to settle all positions. Timing depends on when the match concludes and the results are widely reported, ensuring all participants have access to the same authoritative information.
Key signals that could shift this market include player form in early sets, injury updates, or changes in coaching strategy — all of which may affect expectations for the third set. Sudden momentum swings during the match, such as a break of serve or a series of decisive games, can also cause rapid price adjustments. As the match progresses, any news that alters the perceived likelihood of either player winning Set 3 will drive trading activity and reshape market odds on Kalshi.