Updated 1 month ago
If [outcome] wins the Williams / Williams vs Chan / Joint professional tennis match in the 2026 US Open Women Doubles Round Of 64 after a ball has been played, then the market resolves to Yes.
Winner: Hao-Ching Chan / Maya Jointon Sep 3, 2026
What happened
Resolved 2026-09-04
Hao-Ching Chan and Maya Joint defeated Serena and Venus Williams 6-3, 6-7(8), 7-6(10-7) in the US Open women's doubles first round on September 4, winning a dramatic three-hour match after overcoming a 5-0 deficit in the deciding tiebreaker. Markets had the outcome near contested at 59% for Chan/Joint the day before, making their comeback victory particularly striking as they stormed back from the brink against the legendary sisters in their first Grand Slam doubles appearance in four years.
Before Williams / Williams vs Chan / Joint resolved, the final Kalshi odds were: Hao-Ching Chan / Maya Joint: 99%. These probabilities were derived from real-money trading right up until the market closed.
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Prediction market odds reflect the aggregate opinion of traders who risk real money on outcomes. The price of a share (e.g., 65¢) represents the market's implied probability (65%). Prices move as traders buy and sell based on new information, polls, and analysis.
