Who will win a Grand Slam in 2027?
Live prediction market odds for Who will win a Grand Slam in 2027?. Compare prices across Kalshi and Polymarket US.
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Compare all 7 outcomes across 2 venuesTraders give Karolina Muchova about a 98.0% chance. Marta Kostyuk follows at 98.0%, Aryna Sabalenka follows at 94.0%, and Coco Gauff follows at 80.0%. Compare prices from Kalshi and Polymarket US. The largest cross-platform price difference is 10.0 percentage points.
Kalshi
Polymarket USKalshiPolymarket USOfficial settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket US.
KalshiIf Victoria Mboko wins a tennis major (the Australian Open, the French Open, Wimbledon, or the U.S. Open) after Issuance and before Dec 31, 2027, then the market resolves to Yes. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.
Polymarket USThis market will settle to Yes if Victoria Mboko wins at least one of the four 2027 Grand Slam womens singles titles: the Australian Open, Roland-Garros, Wimbledon, or the US Open. If the player does not win any of the four for any reason, including withdrawal or not competing, the market will settle to No. Outcome sourced from WTA.
The four Grand Slam tournaments are the Australian Open, French Open, Wimbledon, and the US Open. Each tournament has its own unique surface and conditions.
Player performances in ATP and WTA events leading up to the Grand Slams influence their odds. Factors such as match wins, injuries, and head-to-head records are considered.
Trading for this market is scheduled to close on September 27, 2027. However, the actual outcomes will be determined by the results of the Grand Slam tournaments throughout the year.
The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US in one place. Each price reflects the market’s implied probability, not a guaranteed result.
The latest available prices are Karolina Muchova: 98.0¢ on Kalshi; Marta Kostyuk: 98.0¢ on Kalshi; Aryna Sabalenka: 89.0¢ on Kalshi, 99.0¢ on Polymarket US; Coco Gauff: 80.0¢ on Kalshi. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity.
