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, 2:54 PM EST
Kalshi
This market assesses the potential outcome of a professional tennis match between two players at a major tournament. It focuses on whether either player will win by a margin of more than one full set. The event resolution depends entirely on the competitive performance of the athletes during the match.
The market evaluates whether either Jan Choinski or Botic Van de Zandschulp will win their 2026 US Open Men Singles Round Of 128 match by a margin exceeding 1.5 sets. If the match does not occur before any play due to injury, walkover, forfeiture, or cancellation, it resolves to a fair price. Postponements or delays keep the market open until the rescheduled match concludes within two weeks. If a player retires during the match, outcomes determinable from completed play settle accordingly, while unresolved markets resolve to a Fair Market Price at the Exchange's discretion. Kalshi disclaims any official affiliation with the governing league, and all trademarks remain property of their respective owners.